Title (Font-Times new roman, Size-16, Bold, Center)


Kinyili et al./ Journal of Tropical Forestry and Environment Vol. 10, No. 01 (2020) 87-100 

                                                                                                        87 

 

Influence of Agroforestry on Rural Income and Livelihood of 

Smallholder Farmers in the Semi-Arid Region of Sub Saharan Africa 
 

B.M. Kinyili
1
*, E. Ndunda

2
 and E. Kitur

2
 

 
1
Kenya Forest Services, Eldoret, Kenya 

2
Department of Environmental Science, Kenyatta University, Nairobi, Kenya 

 

Date Received:   23-06-2019                      Date Accepted: 30-04-2020 

 

Abstract 

Semi-arid lands typically suffer from sustainable land use challenges including climate 

variability, declining agricultural productivity, low economic prowess and poor livelihood conditions. In 

order to sustainably address these challenges, agroforestry has been fronted as a critical entry point 

allowing for the integration of trees on farms and diversification of production in agricultural 

landscapes. Nevertheless, the contribution of agroforestry to socio-economic and rural livelihood in 

several developing countries remains debatable. This study determined the influence of agroforestry on 

rural income and livelihood of smallholder farmers in Machakos county (Kenya). The study was 

conducted using survey research design from a sample of 248 smallholder farmers, who were selected 

using stratified, random sampling. Data were collected using questionnaires and interviews. Results 

showed that agroforestry was adopted by 82% of the smallholder farmers as a strategy for livelihood 

improvement in the region. Total income was higher among adopters from timber, fuel wood, 

posts/poles and fodder. Adopters also had more money to spend on food, clothing, education, medicine 

and basic needs as a result of revenues from agroforestry. The overall gross revenue, net returns above 

variable costs and total costs were also higher among adopters compared to the non adopters due to sales 

of agroforestry products. The study recommends adoption of agroforestry as a strategy to boost rural 

income and livelihood. 

Keywords: agroforestry, socio-economic, rural income and livelihood, machakos, sub Saharan Africa 

 

1. Introduction 

Globally, dryland areas characterised by low moisture content due to low rainfall and high rates of 

evaporation, and a gradient of low agricultural productivity, comprise of approximately 100 countries 

and cover 42% of the global surface landmass (6.4 billion ha) (Prăvălie 2016; Bastin et al., 2017; 

Prăvălie et al., 2019). Despite the wide coverage, concern have been raised on human conditions in 

dryland environments in Africa, calling for significant development assistance and frequent 

humanitarian aid (De Leeuw et al., 2014). The gravity of the situation in drylands of Africa is clearer 

since it account for nearly 400 million people who live and derive their livelihood in these areas 

(Aleman et al., 2018; Gaur and Squires, 2018). The situations within the dryland areas are being 

orchestrated by innumerable challenges such as climate variability, frequent drought, natural resources 

degradation, declining agricultural productivity and high population increment (Syano et al., 2016). 

Therefore, there is a consensus that most of the agro-based activities within these landscapes must be 

geared towards solving foreseeable challenges (Krishnamurthy et al., 2019). Agroforestry as a dynamic, 

ecologically based natural resources management system, integrates trees on farms and in agricultural 

landscapes has been under consideration as an integral component of dryland regions(Ceperley et al., 

2016). 

 __________________________________  
*Correspondence: bmkinyili@yahoo.com 

Tel: +25 4723393737 

©University of Sri Jayewardenepura 

DOI: https://doi.org/10.31357/jtfe.v10i1.4691 



88 

The multiple perceived benefits and merits of agroforestry for providing environmental benefits, 

economic products and social goods are well known and widely recognised (Franzel, 2004; Jose, 2009; 

Fanish and Priya, 2013; Gao et al., 2014). In rural households, trees can be used as sources of food, fuel, 

fodder, construction materials, medicine, to meet subsistence needs (Adekunle and Bakare, 2004; Kumar 

and Thakur, 2017; Jemal et al., 2018). Historically, agroforestry was narrowly defined in terms of their 

subsistence production (Somarriba, 1992) but currently seen in light of economic terms stressing the 

enhancement of the economic return of the system (Kareem et al., 2016; Mercer et al., 2017; Paul et al., 

2017; Bruck et al., 2019). In light of recurring food shortages, and rising prices of fossil fuel-based 

agricultural inputs, economic benefits of agroforestry has recently experienced a surge in interest from 

the research communities, especially in developing countries (Amejo et al., 2018).  

In africa, agroforestry is currently practiced by many smallholder farmers (Mbow et al., 2014) 

where there has been increasing adoption by farmers particularly in the sub Saharan Africa (Franzel et 

al., 2001; Leakey et al., 2005; Meijer et al., 2015; Beyene et al., 2019). Adoption of agroforestry is still 

rampant despite the persistent attempts at introducing monoculture crop production (Djurfeldt et al., 

2005; Altieri et al., 2012). Many of the residents view the option of integrating and managing trees with 

crops and livestock on the same landscape as an opportunity cost representing a conscious investment 

due to goods and services derived from the practice (Amare et al., 2019). The suits of goods and services 

derived from the practice of agroforestry  include firewood, building materials (posts and timber), food 

such as fruits, medicine and invaluable environmental services (Wulan et al., 2008; Kimaro et al., 2019). 

In rural areas, other additional non-timber products include beeswax, honey, edible fruits, edible insects, 

wild vegetable, game meat, traditional medicines and fibres, estimated to boost annual income of 

households (Leakey et al., 2005; Kalaba et al., 2010). Consequently, the insight that trees on farms 

improve the socio-economic prospects and provide livelihood benefits is increasingly being recognised 

in the sub Saharan African region (Kalaba et al., 2010; Quandt et al., 2018).  

Profitability of the various agroforestry practices has been analysed by various workers and the 

results show large degree of variation among research as to the overall socio-economic and livelihood 

impacts (Kang and Akinnifesi, 2000; Roshetko et al., 2007; Steffan-Dewenter et al., 2007; Akinnifesi et 

al., 2008). Nevertheless, in several drylands of developing countries especially in the Sub Saharan 

Africa, studies addressing contribution of agroforestry to socio-economic status and rural livelihood are 

limited (Jama et al., 2006; Iiyama et al., 2014) and therefore may be inconclusive. Therefore more 

studies on agroforestry adoption and socio-economic conditions are needed. The aim of this study was to 

determine the influence of agroforestry adoption on the rural income and livelihood in Machakos county 

in Kenya within the tropical region. 

 

2. Methodology 

2.1 The study area 

The study was conducted in Machakos county (Figure 1) which covers an area of 5,953 km². It 

lies between latitudes 0
o
 45

/
 South and 1

o
 31

/
 South and longitudes 36

o
 45

/
 East and 37

o
45

/
 East. Most of 

the land is semi-arid with population of 1,098,584 as per the 2009 Kenya National census (Kenya 

National Bureau of Statistics, 2010). Administratively the county is divided into 11 divisions: Kalama, 

Kangundo, Kathiani, Machakos Central, Masinga, Matungulu, Mavoko, Mwala, Ndithini, Yathui and 

Yatta. In terms of political structure, the county has eight constituencies including: Kangundo, Kathiani, 

Machakos Town, Masinga, Matungulu, Mavoko, Mwala and Yatta. There are overlaps between 

divisions and constituencies were they are in most cases referred to as Sub-Counties. Among the 

division and constituencies, Kathiani, Mavoko and Machakos Town practice agrofostry. Four siteswhere 



Kinyili et al./ Journal of Tropical Forestry and Environment Vol. 10, No. 01 (2020) 87-100 

89 

 

agroforestry are practiced included: Mua (Mavoko, Machakos Town and Kathiani) and Iveti Hills 

(Machakos Central and Kathiani), Kima-Kimwe and Kalama in Machakos Constituency.  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 1. Map of Machakos county showing the study area, Kenya. 

The local climate is semi-arid with hilly terrain and an altitude of 1,000 to 2,100 m above sea 

level. The area is composed of hilltops rising to 1,594-2,100 m above sea level. The annual average 

rainfall is 1,000 mm (range, 500 to 1,300 mm), and is bimodal; short rains occur in October to December 

and long rains in March to May. Temperatures range between 18.7
o
 C and 29.7

o
 C. The soils are well 

drained shallow dark red volcanic on hilltops and clay soils in the plains. Irrigation farming is practiced 

utilising the permanent rivers and streams that flow from the hilltop catchment areas towards South 

Eastern to join Athi river. Crop such as maize, beans, pigeon peas, vegetables are dominant. Dairy and 

beef cattle, sheep, and goats are the major livestock kept. 

2.1 Data collection  

This study was conducted through an exploratory survey design. Surveys are normally used to 

systematically gather factual quantifiable information necessary for decision-making (Nardi, 2018). 

Surveys are efficient methods of collecting descriptive data regarding the characteristics of populations, 

current practices and conditions or needs. They also help gather information from large populations by 

employing use of samples hence cutting down on costs. Survey study research design was adopted in 

this study in order to capture descriptive data from selected samples and generalise the findings to the 

populations from which the sample was drawn. 

The study targeted household heads from Mua Hills (Mavoko, Machakos Town and Kathiani), 

Iveti Hills (Machakos Central and Kathiani), Kima-Kimwe and Kalama Hills in Machakos Constituency. 

The sample size of the households adopting agroforestry as earlier established in the region was used. 

According to (Nzilu, 2015), 80% of the households had adopted agroforestry in Mwala (Machakos 

county). The appropriate sample size was computed using the formula described in Mugenda and 

Mugenda (Mugenda and Mugenda, 2003) (equation 1). 

 



90 

 

 

 

where: n=the desired sample size  

z=the z score at the required confidence level α=0.05 (1.96)  

p=the proportion in the target population assumed to be adopter      
d=permissible marginal error (the level of statistical significance, set at α=0.05). 

Using the values of z, p and d, the value of n was computed as follows (equation 2). 

 

 

 

The sample size was 246 but the two research assistants who hail from the area also provided 

additional information resulting in a total of 248 respondents. Adopters who were included in the study 

were households practicing any form of agroforestry while non adopters were those who had no form of 

agroforestry or tree growing in their farms. Samples were selected through stratified, random sampling 

at each of the selected spatial units and used to identify the adopters and non adopters.  

This study relied on primary type of data. Primary data on income, expenditure and rural 

livelihood among the respondents was collected using structured researcher administered questionnaires. 

The designing of the instruments were such that they ensured an in-depth exploration of personal views, 

feelings and opinions on agroforestry and benefits accrued. Before data collection, the respondents were 

contacted in advance and asked to organize their time for the research. Two research assistants were 

recruited and trained to aid in data collection. The questionnaires were administered by physical drop 

and pick by the researcher and two research assistants. The researcher personally administered the 

instrument and made prior visits to assist in defining timings and distribution of research instruments. 

Research instruments were developed by examining the aim of the research. The validity of the 

instruments was sought through expert judgment who examined the face, content and construct validities 

in order to determine whether items measured what they were supposed to determine. They established 

whether the numbers of items are adequate for the purpose intended research and thus their expert 

judgments ensured validity of the instruments.  

The reliability of the instruments was established through a pilot study of 12 household members 

from the study area who did not participate in this study. The results of the study were used to compute 

the reliability of the instruments through Cronbach’s coefficient alpha (Bonett and Wright, 2015). The 

study considered the instrument as reliable and acceptable if the computation yielded a reliability 

coefficient of 0.7 and above. For this study, the reliability coefficient was 0.83 which was suitable for 

research. 

All questionnaire data were coded into Statistical Package for Social Sciences (SPSS 23) for 

analysis. Differences in rural income, expenditure and livelihood were evaluated using chi-square 

analysis and ANOVA. All analyses were declared significant at p<0.05. 

 

3. Results 

The socio-economic profile of the respondents in Machakos county during the study is shown in 

Table 1. Majority of the respondents were aged 36-55, most being females with primary and secondary 

2

2
)1(

d

ppz
n




24686.245
05.0

)8.01(8.096.1
2

2




n

(1) 

(2) 



Kinyili et al./ Journal of Tropical Forestry and Environment Vol. 10, No. 01 (2020) 87-100 

91 

 

levels of education. Household size for the majority was 6-10. The land size ranged between 0.4 to 24 

acres with majority having land size ranging between 2-5 acres followed by those with less than 2 acres.  

Table 1: Socio-economic profiles of the respondents. 

  Agroforestry adopters Agroforestry non adopters 

Variable 
Response 

category 

Frequency 

(n=204) 
Percent (%) 

Frequency 

(n=44) 
Percent (%) 

Age (years) 

18-25   11   5.4   6   6.9 

26-35   28 13.7   8 18.2 

36-55   84 41.2 14 31.8 

>55   81 39.1 16 36.4 

Gender 
Female 116 56.9 26 59.1 

Male   88 43.1 18 40.9 

Marital status 
Single   12   5.9   1   2.3 

Married 192 94.1 43 97.7 

Level of 

education 

None     5   2.5 7 15.9 

Primary 112 54.9 18 40.9 

Secondary   73 35.8 14 31.8 

Tertiary   14   6.8   5 11.4 

Household size 

<3      3   1.5   0   0.0 

3-5   75 36.8 27 61.4 

6-10 105 51.5 17 38.6 

>10   21 10.3   0   0.0 

Land size 

<2 acre   72 35.3 14 31.8 

2-5 acres 106 52.0 26 59.1 

5.1-10 acres   26 12.7   4   9.1 

The computed average income from crops, livestock and total income from the adopters and non 

adopters of agroforestry in Machakos are provided in Table 2. The income derived from crop, livestock, 

tree seedlings and tree products as well as the farm and total income of the farmers were all significantly 

higher for the adopters than non adopters (p<0.05). 

Table 2: Average income from crops, livestock and total income computed between adopters and non 

adopters of agroforestry in Machakos (Values are in US $). 

Income Adopters Non adopters t value p value 

Average annual farm income from crop 

proceeds
*
 

278.39 154.16 30.1281 0.0000 

Average annual farm income from livestock
*
 228.38 156.05 9.531 0.0021 

Average annual income from tree seedlings
*
 205.18 109.83 17.391 0.0001 

Average income from wood/wood products
*
 271.34 142.91 16.680 0.0001 

Average farm income per annum
*
 253.44 195.61 5.985 0.0056 

Total income from agroforestry
*
 1236.73 758.56 60.104 0.0000 

*
Differences are significant at p<0.05

 

NS denotes not significantly different 

The average income wood and wood products from the adopters and non adopters of agroforestry 

in Machakos are provided in Table 3. The income derived from timber and fuel wood as well as the total 

income derived from wood/wood products was significantly higher for the adopters than non adopters 



92 

(p<0.05). However, the income derived from posts/poles and from fodder was similar for the adopters 

and non adopters. 

Table 3: Income derived from wood and wood products between the adopters and non adopters in 

Machakos county (Values are in US $). 

Wood income Adopters Non adopters t value p value 

Income realised annually from timber
*
 162.00 77.73 14.088 0.0000 

Income realised annually from fuelwood
*
 96.06 67.15 3.184 0.0413 

Income realised annually from post/poles
NS

 60.16 53.61 0.248 0.6193 

Income realised annually from fodder
NS

 63.00 64.72 0.005 0.9546 

Total annual income from wood/wood products
*
 271.34 142.91 16.680 0.0001 

*
Differences are significant at p<0.05

 

NS denotes not significantly different 

Annual expenditure on basic needs adopters and non adopters of agroforestry in Machakos 

County are shown in Table 4. The annual expenditure on food, clothing, education, medicine and total 

household expenditure on basic needs were all significantly higher for the adopters than non adopters 

(p<0.05). 

Table 4: Annual expenditure on basic needs between adopters and non adopters of agroforestry in 

Machakos county (Values are in US $). 

Expenditure on basic needs Adopters Non adopters t value p value 

Annual household expenditure on food
*
 222.27 86.82 74.954 0.0000 

Annual household expenditure on clothing
*
 157.02 69.89 62.944 0.0000 

Annual household expenditure on education
*
 206.28 151.09 11.389 0.0014 

Annual household expenditure on medicine
*
   92.42 57.55   9.304 0.0034 

Annual household expenditure on basic needs
*
 646.55 329.52 111.851 0.0000 

*
Differences are significant at p<0.05

 

NS denotes not significantly different 

The annual expenditure budget for wood and wood products between adopters and non adopters 

are shown in Table 5. The household annual expenditure on timber, poles as well as the total expenditure 

on wood and wood products was significantly higher for the non adopters than adopters (p<0.05).  

Table 5: Annual expenditure budget for wood and wood products between adopters and non adopters. 

(Values are in US $). 

Wood/wood product expenditure category Adopters Non adopters t value P value 

Household annual expenditure on timber
*
 71.00 164.62 4.276 0.0225 

Household annual expenditure on fuel wood
*
 45.81 49.91 0.4254 0.0432 

Household annual expenditure on poles/posts
NS

 50.09 52.30 0.0452 0.8323 

Household annual expenditure on fodder
NS

 31.03 37.51 2.796 0.3422 

Total expenditure on wood/wood products
*
 199.93 302.34 10.672 0.0001 

*
Differences are significant at p<0.05

 

NS denotes not significantly different 

The enterprise budget for adopter and non adopters of agroforestry practices in Machakos county 

are shown in Table 6. Based on the table, gross revenue for the adopters (US $ 1,236.73) was higher 

than the non adopters (US $ 758.56). Also the overall expenditure on variable cost by the adopters (US $ 

890.16) was consistently higher than the non adopters (US $ 663.86). The total fixed cost of the 



Kinyili et al./ Journal of Tropical Forestry and Environment Vol. 10, No. 01 (2020) 87-100 

93 

 

agroforestry adopters was nevertheless similar to the non adopters (US $ 70.80). As a consequence, there 

were higher net returns above Total Variable Costs (TVC) for the adopters (US $ 346.57) compared to 

the non adopters (US $ 94.70), which resulted in positive higher net returns above Total Cost (TC) for 

the adopters (US $ 275.77) compared to the non adopters (US $ 23.90). The computed margins above 

TVC (%) was therefore higher for the agroforestry adopters (28.02%) than the non adopters (12.48%) 

and margins above the total cost for the adopters was 22.30% and 3.15% for the non adopters. 

Table 6: Computed enterprise budget for adopter and non adopters of agroforestry practices in Machakos 

county (Values are in US $). 

Parameters Adopters Non adopters 

Revenues   

Average annual farm income from crop proceeds 278.39 154.16 

Average annual farm income from livestock 228.38 156.05 

Average annual income from tree seedlings 205.18 109.83 

Average annual income from wood/wood products 271.34 142.91 

Average annual farm income per annum 253.44 195.61 

Total income from agroforestry 1236.73 758.56 

Variable costs   

Household expenditure on food per year 222.27   86.82 

Annual household expenditure on clothing 157.02   69.89 

Annual household expenditure on education 206.28 151.09 

Annual household expenditure on medicine   92.42   57.55 

Total Annual household expenditure on basic needs 646.55 329.52 

Household annual expenditure on timber   71.00 164.62 

Household annual expenditure on fuel wood   45.81   49.91 

Household annual expenditure on poles/posts   52.09   50.30 

Household annual expenditure on fodder   31.03   37.51 

Total expenditure on wood/wood products 199.93 302.34 

Miscellaneous   43.68   32.00 

Total variable cost (TVC) 890.16 663.86 

Fixed costs   

Amortisation   60.00   60.00 

Interest on fixed cost   10.80   10.80 

Total fixed cost   70.80   70.80 

Total cost (TC) 960.96 734.66 

Net returns above TVC 346.57   94.70 

Net returns above TC 275.77   23.90 

Margins above TVC (%)   28.02   12.48 

Margins above TC (%)   22.30     3.15 

The indicators of improved livelihood among the adopters and non adopters of agroforestry were 

also determined (Table 7). There were significant differences in the responses to the contribution of 

agroforestry to livelihood between the adopters and non adopters (
2
=45.2312, df=8, p<0.001). Among 

the adopters of agroforestry, majority attested that indeed there was increased food supply, improved 

educational attendance and increased energy in the household.  

 



94 

Table 7: Indicators of improved livelihood among adopters of agroforestry. 

Livelihood indicators 
Adopters Non adopters 

Frequency Percent (%) Frequency Percent (%) 

Reduced use of fertilizers 168 82.4 15 34.1 

Increased energy in the household 174 85.3 17 38.6 

Increased food supply 178 87.3 11 25.0 

Increased household income 124 60.8 15 34.1 

Improved educational outcomes 101 49.5 15 34.1 

Improved medical attendance 78 38.2 12 27.3 

Improvement in employment  122 59.8 8 18.2 

Improved educational attendance 177 86.8 11 25.0 

Increase in land sizes 106 52.0 7 15.9 

The scores of the indicators of household livelihoods was also determined among the adopters 

and compared with the non adopters. The results are as shown in Figure 2. Based on the scores from the 

figure, there were consistently higher rank scores for all the livelihood indicators among adopters 

compared to the non adopters except for improved educational outcomes, improved medical attendance, 

and increased land sizes.  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2. Scores of the indicators of household livelihoods among adopters and non adopters in 

Machakos county. 

 

 

0

20

40

60

80

P
e
rc

e
n
t 

ra
n
k
 s

c
o
re

s 
o
f 

th
e
 r

e
sp

o
n
se

s 

Indicator of livelihood 

Adopters

Non adopters



Kinyili et al./ Journal of Tropical Forestry and Environment Vol. 10, No. 01 (2020) 87-100 

95 

 

4. Discussion 

During the study, the income derived from crop, livestock, tree seedlings and tree products as 

well as the farm and total income of the farmers were higher for the adopters than non adopters. This 

concurs with other studies which indicated that earning from crops, livestock and trees among 

agroforestry adopters is often higher owing to the income earned from sales of the crops, livestock and 

trees from the agroforestry (Neupane and Thapa, 2001; Franzel, 2004; Namwata et al., 2012; Kareem et 

al., 2016; Kassie, 2018). Indeed agroforestry increase livelihood benefits for people such as food 

security, employment, income generation among others. Meanwhile the average annual farm income 

from livestock proceeds displayed significant differences since it was established that agroforestry 

adopters did keep higher number of animals than those not practicing agroforestry and therefore the 

earnings from livestock were similar. The study also established a higher income from timber, fuel wood 

and wood/wood products due to agroforestry adoption which concurs with several other studies (Scherr, 

2004; Bertomeu, 2006). Apart for domestic use of the timber and fuel wood, there are instances where 

farmers with larger scale practice of agroforestry can sell some of their products and earn income higher 

than those without any form of agroforestry. Nevertheless the income derived from posts/poles and from 

fodder were similar for the adopters and non adopters which may be attributed to low production of 

these wood products among farmers and the fact that they do not sell posts/poles and fodder. 

The annual expenditure on food, clothing, education, medicine and total household expenditure 

on basic needs were all significantly higher for the adopters than non adopters due to the higher disposal 

income from agroforestry that enabled them spend more on food, clothing, education and medicine. 

Given one of the largest costs of most rural areas is on fuel wood as a source of energy (Sharma et al., 

2016; Waldron et al., 2017), most of the farmers with trees in their farms will save the income and use it 

to purchase food, built better houses and spend more on quality education as well as search for better 

healthcare (Borish et al., 2017). 

The household annual expenditure on timber, poles as well as the total expenditure on wood and 

wood products was significantly higher for the non adopters than adopters which concurs with other 

studies (Leakey et al., 2005) due to the fact that most of the adopters have these products in their farms 

and therefore they don’t need to buy these products from outside their farms. During adoption of 

agroforestry, farmers have access to wood and wood products and therefore the amount of money going 

towards purchase of such are expected to be lower than those who have no wood from any agroforestry 

practice. However, expenditure on fodder was not different between the adopters and the non adopters 

mainly because most of the agroforestry practices were not planting fodders in their farms.  

Analysis of enterprise budget yielded several observations. First the gross revenue for the 

adopters (US $ 1,236.73) was higher than the non adopters (US $ 758.56) indicating higher income 

derived from agroforestry practices. Similarly the overall expenditure on variable cost by the adopters 

(US $ 890.16) was consistently higher than the non adopters (US $ 663.86) which was attributed to the 

adopters having higher disposal incomes. The total fixed cost of the agroforestry adopters was 

nevertheless similar to the non adopters (US $ 70.80) suggesting that fixed cost for the adopters and non 

adopters tend to be somewhat similar. As a consequence, there were higher net returns above TVC for 

the adopters (US $ 346.57) compared to the non adopters (US $ 94.70), which resulted in positive higher 

net returns above TC for the adopters (US $ 275.77) compared to the non adopters (US $ 23.90). Based 

on the above statistics, the computed margins above TVC (%) was therefore higher for the agroforestry 

adopters (28.02%) than the non adopters (12.48%) and margins above the total cost for the adopters was 

22.30% and 3.15% for the non adopters. These results suggest that income was higher for the adopters 

resulting in overall profitable operational margins that render adoption as a good enterprise. 



96 

This study also determined the influence of adoption of agroforestry practices on rural livelihood 

of smallholder farmers and found that adopters of agroforestry had increased food supply, improved 

educational attendance and increased energy in the household, which concurs with several studies 

among agroforestry adopters (Quandt and McCabe 2017; Quandt et al., 2018). The diversification of 

crops, keeping of livestock and trees in the same farm which can be sold by the farmers is expected to 

create opportunities for achieving a steady and sometimes higher rural income through the more efficient 

use of resources and the exploitation of comparative advantages (Kassie 2018). Agroforestry systems 

have also been determined to combine short-term and long-term benefits for the farm households with 

the aim of livelihood protection and sustainability in the use of resources in semi arid areas (Quandt et 

al., 2017). The mango-based alley cropping that was practiced by majority of the farmers played a vital 

role in rural livelihood strategies. 

The scores of the indicators of household livelihoods were consistently higher rank scores for all 

the livelihood indicators among adopters compared to the non adopters except for improved educational 

outcomes, improved medical attendance, and increased land sizes. Improvement of livelihood among 

agroforestry adopters have been identified in several studies. The land use systems in the study area are 

generally agro-crop production along with timber and fruit tree species and livestock production 

systems. Here, the farmers practice agroforestry include woodlot, alley cropping, 

windbreaks/shelterbelts and intercrop. Most of the farmers intercropped grain, vegetables and tree crops. 

The grain crops cultivated in the land use system included maize, bean, millet, sorghum, pigeon peas, 

peas, green chili, etc. with horticultural produce such as avocado, carrot, kales, oranges, mangoes, 

pawpaw, onions, tomatoes, cabbages, gourd, bitter gourd, pumpkin, and pineapple, which are often sold 

to increase livelihood indices. Nevertheless it was found that income generating activities in the study 

area were not diversified as compared to other regions of the world (Burgess et al., 2017; Mosquera-

Losada et al., 2018). From above results, it is clear that agroforestry plays a major role in supporting the 

socio-economic needs and improving the livelihood conditions of the people in Machakos, Kenya. 

 

5. Conclusion 

The study shows that in the dryland area of Machakos in Kenya, adoption of agroforestry 

improved the socio-economic and livelihood indicators of the local communities by enhancing income 

and expenditure. Agroforestry adoption generated more money to adopters to send their children to 

schools, buy medicine, buy clothes and other necessities that eventually improved the livelihood. It can 

be concluded that agroforestry adoption had a significant impact on the livelihood of most agroforestry 

adopters and their households 

 

Acknowledgment 

The Kenya Organization for Environmental Education (KOEE) through Faith Based Climate 

Change Education for Sustainable Development (FBCCESD) financed this study while Kenya 

Agricultural and Livestock Research Organization (KALRO) helped in providing information on areas 

with previous agroforestry projects. The Kenya Forest Service (KFS) assisted in identification of active 

agroforestry adopters who participated in this study. We thank the local community members who 

agreed to sacrifice their time to respond to the questionnaires. 

 

References 

Adekunle, V.A. and Bakare, Y., 2004. Rural livelihood benefits from participation in the taungya 

agroforestry system in Ondo State of Nigeria. Small-scale Forest Economics, Management and 

Policy, 3:131-138. 



Kinyili et al./ Journal of Tropical Forestry and Environment Vol. 10, No. 01 (2020) 87-100 

97 

 

Akinnifesi, F., Chirwa, P., Ajayi, O., Sileshi, G., Matakala, P., Kwesiga, F., Harawa, H. and Makumba, 

W., 2008. Contributions of agroforestry research to livelihood of smallholder farmers in Southern 

Africa: 1. Taking stock of the adaptation, adoption and impact of fertilizer tree options. 

Agricultural Journal, 3:58-75. 

Aleman, J.C., Jarzyna, M.A., and Staver, A.C., 2018. Forest extent and deforestation in tropical Africa 

since 1900. Nature Ecology and Evolution, 2:26. 

Altieri, M.A., Funes-Monzote, F.R. and Petersen, P., 2012. Agroecologically efficient agricultural 

systems for smallholder farmers: contributions to food sovereignty. Agronomy for Sustainable 

Development, 32:1-13. 

Amare, D., Wondie, M., Mekuria, W. and Darr, D., 2019. Agroforestry of Smallholder Farmers in 

Ethiopia: Practices and Benefits. Small-scale Forestry, 18:39-56. 

Amejo, A.G., Gebere, Y.M. and Kassa, H., 2018. Integrating crop and livestock in smallholder 

production systems for food security and poverty reduction in sub-Saharan Africa. African 

Journal of Agricultural Research, 13:1272-1282. 

Bastin, J.-F., Berrahmouni, N., Grainger, A., Maniatis, D., Mollicone, D., Moore, R., Patriarca, C., 

Picard, N., Sparrow, B. and Abraham, E.M., 2017. The extent of forest in dryland biomes. 

Science, 356:635-638. 

Bertomeu, M., 2006. Financial evaluation of smallholder timber-based agroforestry systems in Claveria, 

Northern Mindanao, the Philippines. Small-scale Forest Economics, Management and Policy, 

5:57-81. 

Beyene, A.D., Mekonnen, A., Randall, B. and Deribe, R., 2019. Household Level Determinants of 

Agroforestry Practices Adoption in Rural Ethiopia. Forests, Trees and Livelihoods, 1-20. 

Bonett, D.G. and Wright, T.A., 2015. Cronbach's alpha reliability: Interval estimation, hypothesis 

testing, and sample size planning. Journal of Organizational Behavior, 36:3-15. 

Borish, D., King, N. and Dewey, C., 2017. Enhanced community capital from primary school feeding 

and agroforestry program in Kenya. International Journal of Educational Development, 52:10-18. 

Bruck, S.R., Bishaw, B., Cushing, T.L. and Cubbage, F.W., 2019. Modeling the Financial Potential of 

Silvopasture Agroforestry in Eastern North Carolina and Northeastern Oregon. Journal of 

Forestry, 117:13-20. 

Burgess, P., Herder, M.d., Moreno, G., Pantera, A., Kanzler, M., Hermansen, J., Palma, J., Plieninger, 

T., Kay, S. and Mosquera-Losada, R., 2017. Agroforestry in Europe. Practice, research and 

policy. Third National Agroforestry Conference. 

Ceperley, N., Mande, T., Van de Giesen, N., Tyler, S. and Parlange, M., 2016. Assessment of 

Agroforestry Trees in Dry-land Savanna Supports Ecohydrologic Separation.  EGU General 

Assembly Conference Abstracts. 

De Leeuw, J., Njenga, M., Wagner, B. and Iiyama, M., 2014. Treesilience: An as. by: The World 

Agroforestry Centre (ICRAF), Nairobi, Kenya. 

Djurfeldt, G., Holmen, H., Jirstrom, M. and Larsson, R., 2005. The African food crisis: lessons from the 

Asian Green Revolution. Cabi. 

Fanish, S.A. and Priya, R.S., 2013. Review on benefits of agroforestry system. International Journal of 

Education and Research, 1:1-12. 

Franzel, S., 2004. Financial analysis of agroforestry practices. Valuing Agroforestry Systems, Springer, 

pp 9-37. 

Franzel, S., Coe, R., Cooper, P., Place, F. and Scherr, S., 2001. Assessing the adoption potential of 

agroforestry practices in sub-Saharan Africa. Agricultural systems, 69:37-62. 

Gao, J., Barbieri, C. and Valdivia, C., 2014. A socio-demographic examination of the perceived benefits 

of agroforestry. Agroforestry systems, 88:301-309. 



98 

Gaur, M.K. and Squires, V.R., 2018. Climate variability impacts on land use and livelihoods in drylands. 

Springer 

Iiyama, M., Neufeldt, H., Dobie, P., Njenga, M., Ndegwa, G. and Jamnadass, R., 2014. The potential of 

agroforestry in the provision of sustainable woodfuel in sub-Saharan Africa. Current Opinion in 

Environmental Sustainability, 6:138-147. 

Jama, B., Elias, E. and Mogotsi, K., 2006. Role of agroforestry in improving food security and natural 

resource management in the drylands: a regional overview. Journal of the Drylands, 1:206-211. 

Jemal, O., Callo-Concha, D. and van Noordwijk, M., 2018. Local agroforestry practices for food and 

nutrition security of smallholder farm households in Southwestern Ethiopia. Sustainability, 

10:2722. 

Jose, S., 2009. Agroforestry for ecosystem services and environmental benefits: an overview. 

Agroforestry systems, 76:1-10. 

Kalaba, K.F., Chirwa, P., Syampungani, S. and Ajayi, C.O., 2010. Contribution of agroforestry to 

biodiversity and livelihoods improvement in rural communities of Southern African regions. 

Tropical rainforests and agroforests under global change, Springer, pp 461-476. 

Kang, B. and Akinnifesi, F., 2000. Agroforestry as alternative land‐ use production systems for the 
tropics. Natural Resources Forum. Wiley Online Library, pp 137-151. 

Kareem, I.A., Adekunle, M.F., Adegbite, D.T., Soaga, J.A. and Kolade, V.O., 2016. Economic 

evaluation of agroforestry practices in Ogun State, Nigeria. Advances in Forestry Science, 3:39-

44. 

Kassie, G.W., 2018. Agroforestry and farm income diversification: synergy or trade-off? The case of 

Ethiopia. Environmental Systems Research, 6:8. 

Kenya National Bureau of Statistics., 2010. Population census results of Kenya by the year 2009. 

Government Printers: Nairobi, Kenya. http://www.afdevinfo.com/htmlreports/org/org_33469. 

html.  

Kimaro, A.A., Sererya, O.G., Matata, P., Uckert, G., Hafner, J., Graef, F., Sieber, S. and Rosenstock, 

T.S., 2019. Understanding the Multidimensionality of Climate-Smartness: Examples from 

Agroforestry in Tanzania.  The Climate-Smart Agriculture Papers, Springer, pp 153-162. 

Krishnamurthy, L., Krishnamurthy, P.K., Rajagopal, I. and Solares, A.P., 2019. Can agroforestry 

systems thrive in the drylands? Characteristics of successful agroforestry systems in the arid and 

semi-arid regions of Latin America. Agroforestry Systems, 93:503-513. 

Kumar, Y. and Thakur, T.K., 2017. Agroforestry: Viable and futuristic option for food security and 

sustainability in India. International Journal of Current Microbiology and Applied Sciences, 

6:210-222. 

Leakey, R.R., Tchoundjeu, Z., Schreckenberg, K., Shackleton, S.E. and Shackleton, C.M., 2005. 

Agroforestry tree products (AFTPs): targeting poverty reduction and enhanced livelihoods. 

International Journal of Agricultural Sustainability, 3:1-23. 

Mbow, C., Van Noordwijk, M., Luedeling, E., Neufeldt, H., Minang, P.A. and Kowero, G., 2014. 

Agroforestry solutions to address food security and climate change challenges in Africa. Current 

Opinion in Environmental Sustainability, 6:61-67. 

Meijer, S.S., Catacutan, D., Ajayi, O.C., Sileshi, G.W. and Nieuwenhuis, M., 2015. The role of 

knowledge, attitudes and perceptions in the uptake of agricultural and agroforestry innovations 

among smallholder farmers in sub-Saharan Africa. International Journal of Agricultural 

Sustainability, 13:40-54. 

Mercer, D.E., Li, X., Stainback, A. and Alavalapati, J., 2017. Valuation of agroforestry services. In: 

Schoeneberger, Michele M; Bentrup, Gary; Patel-Weynand, Toral, eds 2017 Agroforestry: 



Kinyili et al./ Journal of Tropical Forestry and Environment Vol. 10, No. 01 (2020) 87-100 

99 

 

Enhancing resiliency in US agricultural landscapes under changing conditions Gen Tech Report 

WO-96 Washington, DC: US Department of Agriculture, Forest Service, 63-72. 

Mosquera-Losada, M., Santiago-Freijanes, J., Rois-Díaz, M., Moreno, G., den Herder, M., Aldrey-

Vázquez, J., Ferreiro-Domínguez, N., Pantera, A., Pisanelli, A. and Rigueiro-Rodríguez, A., 

2018. Agroforestry in Europe: A land management policy tool to combat climate change. Land 

Use Policy, 78:603-613. 

Mugenda, O.M. and Mugenda, A.G., 2003. Research methods. Quantitative and qualitative approaches, 

46-48. 

Namwata, B., Masanyiwa, Z. and Mzirai, O., 2012. Productivity of the agroforestry systems and its 

contribution to household income among farmers in Lushoto District, Tanzania. 

Nardi, P.M., 2018. Doing survey research: A guide to quantitative methods. Routledge. 

Neupane, R.. and Thapa, G., 2001. RETRACTED ARTICLE: Impact of agroforestry intervention on 

farm income under the subsistence farming system of the middle hills, Nepal. Agroforestry 

Systems, 53:31-37. 

Nzilu, W.B., 2015. Farmer's perception and its impacts on adoption of new agroforestry tree (Gliricidia 

sepium) in Mwala Division, Kenya. Kenyatta University,  

Paul, C., Weber, M. and Knoke, T., 2017. Agroforestry versus farm mosaic systems–Comparing land-

use efficiency, economic returns and risks under climate change effects. Science of the Total 

Environment, 587:22-35. 

Prăvălie, R., 2016. Drylands extent and environmental issues. A global approach. Earth-Science 

Reviews, 161:259-278. 

Prăvălie, R., Bandoc, G., Patriche, C. and Sternberg, T., 2019. Recent changes in global drylands: 

Evidences from two major aridity databases. CATENA, 178:209-231. 

Quandt, A. and McCabe, J.T., 2017. “You Can Steal Livestock but You Can’t Steal Trees.” The 

Livelihood Benefits of Agroforestry during and after Violent Conflict. Human Ecology, 45:463-

473. 

Quandt, A., Neufeldt, H. and McCabe, J.T., 2018. Building livelihood resilience: what role does 

agroforestry play? Climate and Development, 1-16. 

Quandt, A.K., Neufeldt, H. and McCabe, J.T., 2017. The role of agroforestry in building livelihood 

resilience to floods and drought in semiarid Kenya. Ecology and Society, 22. 

Roshetko, J.M., Nugraha, E., Tukan, J., Manurung, G., Fay, C. and Van Noordwijk, M., 2007. 

Agroforestry for livelihood enhancement and enterprise development. ACIAR PROCEEDINGS. 

ACIAR; 1998, p 137 

Scherr, S., 2004. Building opportunities for small-farm agroforestry to supply domestic wood markets in 

developing countries. Agroforestry Systems, 61:357-370. 

Sharma, N., Bohra, B., Pragya, N., Ciannella, R., Dobie, P., Lehmann, S., 2016. Bioenergy from 

agroforestry can lead to improved food security, climate change, soil quality, and rural 

development. Food and Energy Security, 5:165-183. 

Somarriba, E., 1992. Revisiting the past: an essay on agroforestry definition. Agroforestry systems, 

19:233-240. 

Steffan-Dewenter, I., Kessler, M., Barkmann, J., Bos, M.M., Buchori, D., Erasmi, S., Faust, H., Gerold, 

G., Glenk, K. and Gradstein, S.R., 2007. Tradeoffs between income, biodiversity, and ecosystem 

functioning during tropical rainforest conversion and agroforestry intensification. Proceedings of 

the National Academy of Sciences, 104:4973-4978. 

Syano, N., Wasonga, V., Nyangito, M., Kironchi, G., Egeru, A., Mganga, K., Musimba, N., Nyariki, D., 

Nyangito, M. and Mwang’omb, A., 2016. Ecological and socio-economic evaluation of dryland 

agroforestry systems in East Africa. In: Fifth African Higher Education Week and RUFORUM 



100 

Biennial Conference, “Linking agricultural universities with civil society, the private sector, 

governments and other stakeholders in support of agricultural development in Africa, Cape 

Town”, South Africa, 17-21 October 2016. RUFORUM, pp 525-535. 

Waldron, A., Garrity, D., Malhi, Y., Girardin, C., Miller, D. and Seddon, N., 2017. Agroforestry can 

enhance food security while meeting other sustainable development goals. Tropical Conservation 

Science, 10:1940082917720667. 

Wulan, Y.C., Budidarsono, S. and Joshi, L., 2008. Economic analysis of improved smallholder rubber 

agroforestry systems in West Kalimantan, Indonesia-implications for rubber development. 

Sustainable sloping lands and watershed management conference Luang Prabang, Lao PDR.