




































 Agricultural Science; Vol. 5, No. 2; 2023 
ISSN 2690-5396   E-ISSN 2690-4799 

https://doi.org/10.30560/as.v5n2p8 

8                             Published by IDEAS SPREAD 
 

The Effectiveness of Two Hydroponically Fodder Production of 
Alfalfa (Medicago sativa L.) as Compared to Open Field System in 

Mount Lebanon 
Edouard Tabet1, Carole Nachar1, Khaled El Omari2,3, Chadi Hosri4, Suzy Rouphael1 & Dalida Darazy5 

1 Faculty of Agriculture, Department of Plant Production, Lebanese University, Dekwaneh, Lebanon 
2 Quality Control Center Laboratories at the Chamber of Commerce, Industry and Agriculture of Tripoli and North, 
Lebanon 
3 Laboratoire de Microbiologie Santé et Environnement (LMSE), Doctoral School of Sciences and Technology, 
Faculty of Public Health, Lebanese University, Tripoli 1300, Lebanon 
4 Faculty of Agriculture and Veterinary Medicine, Lebanese University, Beirut, Lebanon 
5 Faculty of Agriculture, Department of Plant Protection, Lebanese University, Dekwaneh, Lebanon 
Correspondence: Edouard Tabet, Faculty of Agriculture, Department of Plant Production, Lebanese University, 
Dekwaneh, Lebanon. Tel: 961-365-5178. E-mail: Edouard.tabet@ul.edu.lb 
 
Received: December 2, 2023   Accepted: December 13, 2023   Online Published: December 30, 2023 
 
Abstract 
This work aims to study the effect on the productivity and quality variation of alfalfa using the two different 
fertilization recipes: F1 and F2 along with two different cultivation method in soilless: coconut fiber bag CF, 
Nutrient Film Technique (NFT) and in soil So. Number of leaves, stem length, number of flowers, crude protein, 
fiber and ash content of alfalfa plants were measured during the three cuttings time of the production cycle. In the 
productivity phase, results showed that during the three cuttings repetition, the number of leaves, stem length and 
number of flowers of alfalfa were in favor of the treatment of coconut fiber bags and the F1 fertilization recipe 
(CF1) followed by NFT with a good interaction noticeable at this combination level (CF1) with the cutting 1. As 
for the quality variation phase, the results showed that the crude protein and ash content are in favor of alfalfa 
grown in soilless CF2; CF1; NFTF1 and NFTF2. As for fiber content, F1 was the most favorable and NFTF1 
reported higher fiber content than coconut fiber bags. Concerning the cutting system, cut 1 had a large impact on 
chemical composition. In summary, alfalfa grown in soilless is more productive and succeeded in the production 
cycle and the quality variation of alfalfa.  
Keywords: Alfalfa, coconut fiber bag, NFT, fertilization recipe, quality variation, productivity 
1. Introduction  
The increased livestock production with a total of 200% in the last 54 years (FAOSTAT, 2017) has resulted in an 
increased demand for feeds and forage supply across the world. To ensure abundant production and high-quality 
forage in grazing systems, producers increased their interest in growing alfalfa to meet the demand for livestock 
production (Wang et al., 2016) which provided the majority of the nutrients required by the animals. In 2009, 
alfalfa was grown on approximately 30 million hectares worldwide. With 9.3 million hectares in the United States 
which is the major producer of this crop forage (USDA-NASS, 2004) and according to FAO, 2020, fodder crops 
are grown on approximately 4500 ha locally from a total of 231 000 of agricultural area in Lebanon, 53 137 of 
which are fallow lands abandoned for years (FAO Ministry of Agriculture, 2010). The multiple crisis Lebanon is 
passing through since 2019 in addition to the poor feed quality and inadequate feed supply, has resulted in 
threatening livestock sector which is highly dependent on imported fodder. Consequently, farmers could no longer 
grow crops to feed their livestock which allow the introduction of a new form growing plants (Weldegerima et al., 
2005) that is timidly adapted by Lebanese farmers due to the lack of investment and/or of technical knowledge 
needed to operate properly (Tabet et al., 2020) and become important to farmers worldwide (Wang et al., 2020) 
as an alternative to get more output with less resources, especially that it can be helpful to countries that have a 
zero soil fertility which is not able to sustain agriculture, with an ability to maximize production in limited space 
(Treftz and Omaye, 2016). Adding hydroponic fodder to the food routine are claimed to have an advantageous 
way of growing plants in a controlled environment including temperature, light intensity and moisture (Liu et al., 



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2020). The objective of our study is to compare the productivity of alfalfa in open field and in the two soilless 
systems which are the Nutrient film technique and coconut fiber bags with their effects on variation of quality.   
2. Material and Methods 
2.1 Work Description 
The experiment took place between April and July 2022 at the Agricultural Research and Training Center (CFRA) 
of the Faculty of Agronomy, Lebanese University located in Ghazir. This study was carried out in a bi-chapel 
greenhouse with an area of 256 m2 (16 m x 16 m), containing 12 bags of Coconut Fiber Bag Technique and two 
units of Nutrient Film Technique system for alfalfa cultivation. The meteorological station located at CRFA-
Ghazir recorded a temperature between 17 and 25°C and a relative humidity between 57 and 68%.  All the work 
concerning the proper development of alfalfa crop in terms of fertility requirement and harvest cuts was similar 
for all the treatments. All plants were irrigated 6-8 times per day. The cultivated alfalfa used in our experiment 
was the “Legend HayMaker 34".   
2.2 Experimental Design  
For the two soilless systems, two different fertilization recipes F1 (Samperio-Ruiz, 2009) for the first unit system 
and F2 (Jones, 2005) for the second unit were used. The experimental design applied in the two different soilless 
systems is shown in the following figure (Figure 1):  

 
 

 
 
 
 
 
 
 
 
 
 
 
 

Figure 1. Experimental design of the two soilless cultivation method 
 
2.3 Growing Alfalfa in Soilless System 
In the Coconut Fiber Bag cultivation method, alfalfa plants were grown in 12 bags, each containing 4 plants per 
bag, were divided into groups in order to supply them with the fertilizers relating to each unit. Nutrient solutions 
F1 and F2 were administered from two different tanks to the bags using pipes (spaghetti tube) connected to a 
floating pump inside the tanks. Bags filled with substrate are placed in channels to collect drainage solution (Tabet 
et al., 2020). Indeed, for the NFT technique, it consists of bringing the nutrient solution from two different 
reservoirs, every one containing the F1 or F2 fertilizers and connected to a separate culture unit composed of two 
tables each of which contains 7 NFT lines (26 plants/line). Each unit requires 7 rows x 26 = 182 plants. In total, 
this experimental part involves 364 alfalfa plants (182 x 2 units). To better organize the work, the forty-eight plants 
used for parameter measurement (24 plants from the Coconut Fiber bag technique and 24 plants from the NFT) 
were selected, divided into groups and marked with red ribbons and from which monthly measurements were 
collected. 
2.4 Fertilization System 
The F1 (Samperio-Ruiz, 2009) and F2 (Jones 2005) fertilization recipes were weighed using a precision balance 
(S/N 1411208789, 19863-400F, 40kg/5g). 
The production cycle for the two soilless systems was divided into two phases: 

F1 F2 



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 Phase I: representing vegetative development (3 weeks) from germination to 15 cm of plant height;  
 Phase II: representing flowering set (1-2 weeks) from 15 cm of plant height to cutting at 60 cm of plant height. 
The number of plants used in our experiment in the different cultivation methods and in combination with the F1 
and F2 were divided into groups of 12 for each treatment NFT and CF (Figure 2).  

  
  
  
  
 
 
 

 
 
 
 
 
 

Figure 2. Experimental block design of the number of plants in the different soilless cultivation methods and in 
combination with the F1 and F2 

 
2.5 Preparation of F1 and F2 Fertilization Solutions 
Due to the nutritional requirements of the plants in their different development stages, it was observed that growth 
improves if a suitable nutrition is supplied. The compositions of the F1 and F2 fertilization solutions used during 
the two phases, vegetative (Phase I) and flowering (Phase II), are presented in the table below (Table 1).  
 
Table 1. Composition of the two fertilization recipes (F1 and F2) used during phases I and II in g 

Stock solution Stock solution Phase I Phase II 
F1 F2 F1 F2 

 
Tank A 

Calcium Nitrate 1100 2500 1710 2500 
Iron 35 35 35 35 

 
 
Tank B 

Magnesium Sulfate 1050 2500 1810 2500 
Fetrilon Combi 
(Oligo elements) 40 40 40 40 

Potassium Nitrate 2300 2900 2900 2900 
Ammonium Sulfate 500 500 700 500 

 
Based on the literature of Samperio-Ruiz, 2009, F1 fertilization recipe varied, during our experiment, according 
to the stages of plant development. For the F2 fertilization recipe all the required nutrients were commonly supplied 
at similar rate during all the stage of development. The micronutrients added to the solution were the same 
throughout the production cycle. 
2.6 Growing Alfalfa in the Soil 
The cultivation in the open soil system were carried out in a tunnel greenhouse of dimensions 12 m x 5m. However, 
plants grown in the soil were fertilized according to the dose adopted by the farmers which is NPK via a venturi 
system irrigation station with a dosatron. On April 4, 2022, seven hundred twenty-one alfalfa seedlings are grown 

48 samples

Unit 1 

12 plants 
from NFTF1

12 plants 
from CF1

Unit 2 

12 plants 
from NFTF2

12 plants 
from CF2



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at 25 cm intervals between plants and 50 cm between rows. Twelve plants intended for the measurement of the 
parameters were selected randomly and marked with ribbons. They are called So.  
The exact amounts and types of fertilizers to be applied after 2 weeks of transplanting are shown in the following 
table of fertilization program (Table 2). 
 
Table 2. Fertigation of alfalfa grown in the soil using different types of fertilizers  

Fertilizers Formulation Total Grams needed per 8 weeks Grams per week added 

Monopotassium Phosphate 
MKP 0-53-34 900 113 

Potassium Nitrate KNO 13-0-45 1600 200 

Potassium Sulfate KSO 0-0-50 400 50 

Monoammonium Phosphate 
MAP 12-61-0 200 25 

20s 20-20-20 100 13 

The amount to be applied for 1 week should be repeated it for a period of 8 weeks till first harvesting.  
 
2.7 PH And EC Of Nutrient Solutions 
A daily measurement of electro conductivity (EC) using the EC meter (HANNA INSTRUMENTS, EC 215) and 
pH of nutrient solutions F1 and F2 using the pH meter (OHAUS STARTER 3100) took place in order to control 
them as best as possible. In general, the pH was maintained between 6.5 and 6.9 while the EC value maintained 
around 2.5 μS/cm (Trejo-Tellez and Gomez, 2012). 
2.8 Harvesting and Sampling 
Our study grouped together three cuts of three successive production cycles of 5 weeks each. At each cut, 
productivity and quality parameters were taken into consideration. The harvesting has been divided into 3 
repetitions. 1st repetition: 5 weeks after transplantation of the plants representing the development of vegetative 
and flowering phase of the plant; 2nd repetition: 5 weeks after the first cut of the plants; 3rd phase: 5 weeks after 
the second cut.  
2.9 Parameters Measured 
Parameters measurements are divided into two parts. The productivity part to measure the growth and the 
development of the alfalfa plants and the quality variation part to measure the different nutrients contents. 
2.9.1 Productivity Measurements of Alfalfa  
A monthly measurement take place for the majority of the parameters related to the growth of the plants. 
Number of Leaves  
On day 0, just after each harvest, the number of leaves of alfalfa was counted manually and this for the marked 
plants of each treatment. 
Stem length 
At the end of each production cycle, the marked plants were measured, harvested at 5 a.m. and preserved in a 
packaging of plastic bag numbered according to culture methods and treatments, then taken on the same day of 
the cutting measurements to the laboratories of Chamber of Commerce Industry and Agriculture of Tripoli where 
60 samples were taken for the experiment and dried using the forced – air Drying oven method (Van Soest,1970) 
at a temperature of 40°C for 6 hours to be dried enough and subjected to the analyzes of the parameters immediately. 
Number of flowers  
The number of flowers marked already was counted manually with each treatment. 
 
 



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2.9.2 Quality Variation Phase of Alfalfa 
During the post-harvest life phase of alfalfa, the parameters were measured at the laboratories on days 19 May; 23 
June; and 28 July 2022. 
Analysis of Dry Forages with FT-NIR method 
A forage analysis consists of multiple parameters such as protein, fiber, ash and moisture content. The BRUKER 
Optics offers the most comprehensive range of the method of Fourier transforms near-infrared (FT-NIR) 
spectroscopy that allows the rapid determination of these and more nutrients in dry forages in terms of chemical 
component. 
2.10 Statistical Analysis 
The tables and figures are produced using the EXCEL 2013 program, while the statistical analyzes are processed 
with GLM (General Linear model) using the Sigmastat program. The significant differences are analyzed with 
Three Way Anova for the productivity and quality phase parameters.  
3. Results and Discussion 
3.1 Productivity Measurements of Alfalfa 
This phase describes the influence of three different cultivation methods and the two fertilization recipes on the 
productivity of alfalfa during the whole production cycle. 
Number of leaves 
The effects of variations in fertilization recipes and cultivation methods on the number of leaves of alfalfa are 
presented in Table 3. 
 
Table 3. Effects of variations in fertilization recipes and cultivation methods on the number of leaves of alfalfa. 

Treatments/Cuts CF1 CF2 NFTF1 NFTF2 So Mean of cuts 
C1 1175a 1130a

 696a 662a 467a 169a 
C2 1016a 941b 577b 596b 388b 133b 

C3 988a 784b 499c 483b 295b 113c 

Mean of treatments  1003a 954b 590c 580c 383d - 
*In columns and rows the numbers with similar exponent represent the absence of a significant difference at p>0.01. 
 
The number of leaves of alfalfa from the group CF1 shows a clear significant difference (P˃0.01) compared to the 
other groups. This proves that the F1 fertilization recipe have almost the highest effect on the number of leaves of 
alfalfa, which is the case for the cultivation method where the CF is relatively higher than that of the NFT and So 
group with a significant difference. 
For instance, some researchers showed the favorable effect that growing media have on plant growth (Maboko et 
al., 2013) as it increased the yield of fodder and water retention (Marinou et al., 2013), other researches did not 
show any difference in the yield (Hallman and Kobryn, 2014).  
The results of the analysis of NFT shows that there is no significant effect in treatments when use F1 as compared 
to F2 for leaf number. Fertilization, however, did not influence this parameter in NFT production. For Pimentel et 
al., 2016, concentrating the root system in a confined volume of improve substrate and the correct water supply 
are one of the essential factors for the development of leaves resulted in an increase in the exchanges between the 
environment and the plant, increasing photosynthesis and can greatly improve the growth of plants which is the 
basis of the soilless system (Savvas et al., 2018).  
The results of statistical analysis for leaf number data according to the number of cuts are presented in Graph 1: 
 
 
 
 
 



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Graph 1. Cutting cycles of alfalfa and variation of leaf number 
 

As shown in Graph 1, the result of the study showed that the leaf number of alfalfas in the first cutting cycle was 
significantly higher as compared to second and third cuts (P<0.001) that rapidly declines. This report quite agreed 
with Gashaw et al., (2015), and Walie et al., (2016) who showed the values that leaf number decrease from 169 
for the first cut till 113 for the third one as the cutting cycle increased for the alfalfa. 
These results indicate that first-cutting also has some unique yield characteristics which corresponds to a higher 
forage content in the leaves than any other cutting (Rankin, 2013).  
Stem length 
The effects of variations in fertilization recipes and cultivation methods on the stem length of alfalfa are shown in 
Table 4. 
 
Table 4. Effect of variations in fertilization recipes and cultivation method on the stem length of alfalfa. 

Treatments/Cuts CF1 CF2 NFTF1 NFTF2 So Mean of cuts 
C1 89.5a 82.8a

 73a 75a 67a 77a 
C2 75.2b 74.6b 66.9b 68b 64a 69b 

C3 65.08b 61.7c 58.6c 62b 58b 60c 

Mean of treatments  77a 73b 66c 66c 63c - 

*In columns and rows the numbers with similar exponent represent the absence of a significant difference at p>0.01. 
 
The length of the stem in the treatment of the two groups CF1 and CF2 showed a significant difference (P˃0.01) 
compared to the other groups. This can be explained by the high-water retention of CF and the constant availability 
of water during production which has an effect on the solubility of fertilizers and their availability to plants and is 
conducive to maintain consistent quality of alfalfa stem length (Liu et al., 2020). 
In coconut fiber bags, the stem length showed a tendency to increase following F1 as compared to F2 that have a 
high nutrient changes in Nitrogen and Phosphorus during the growth of hydroponics fodder.  
While in NFT the stem length of plants irrigated by F1 and F2 shows no significant difference (P>0.01). This 
proves that alfalfa can succeed in the NFT under both recipes. 
No significant difference was reported between NFT and So. Nevertheless, this result suggested that alfalfa 
succeed in these two systems but their stem remains relatively minimal. This can explain that providing a suitable 
medium along with chemical fertilizers increased the length of alfalfa stem which in turn increase number of leaves 
(Sepahvand et al., 2021). 
 
The results of statistical analysis for stem height data according to the number of cuts are presented in Graph 2:  
 
 
 

0
50

100
150
200

C1 C2 C3

N
um

be
r o

f l
ea

ve
s

Number of cuts

Leaf number according to the 
number of cuts



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Graph 2. Cutting cycles of alfalfa and variation of stem length 

 
We recorded an overall mean plant length shown in graph 2 of the first cut that showed a significant superiority 
(P˃0.01) as compared to the second cut that was slightly greater than that of the third cut which have a high 
significant effect (P <0.01). 
The reason for increasing plant length in the first cut that indicate the high statistical influence is probably affected 
by the number of cuts (Popovic et al., 2001). However, frequent cuttings of alfalfa may lead to reduction in plant 
length.  
In this context, it can be concluded that the factor with the greatest influence on the plant length was the time of 
stage of development and cultivation method that was different among the culture across the cutting cycle.  
Number of flowers 
The effects of variations in fertilization recipes and cultivation methods on the number of flowers of alfalfa are 
presented in Table 5. 
 
Table 5. Effects of variations in fertilization recipes and cultivation methods on the number of flowers of alfalfa 

Treatments/Cuts CF1 CF2 NFTF1 NFTF2 So Mean of cuts 
C1 47a 40a

 19a 28a 14a 31a 
C2 40a 36a 16c 19b 14a 26b 

C3 43a 30b 17b 14c 12a 22c 

Mean of treatments  42a 36b 21c 21c 13d - 
*In columns and rows the numbers with similar exponent represent the absence of a significant difference at p>0.01. 
The number of flowers from the two groups CF1 and CF2 showed a significant difference (P˃0.01) compared to 
the groups NFTF1, NFTF2 and So. The high-water retention of CF and the irrigation frequencies are factors that 
improve flower number and mainly attributed to the support of this results (Fernando et al., 2014). Constitutively, 
it shows a significant difference (P<0.01) in favor of the F1 and F2 with a superiority for F1. This difference in 
CF can be explained by the adequate amount in F1 compared to F2, particularly with regard to nitrogen, which 
recalls the studies of Buxton (2010) showing that the decrease in the number of flowers may be due to the excessive 
quantity of nitrogen. 
 
Indeed, the F1 recipe has a lower phosphorus composition compared to that of Kumarasingue et al., (2016) that 
recognized the importance of phosphorus by helping flower initiation. Although, NFT treatment was not 
influenced by the variation in fertilization recipes which is not the case for the cultivation method. We can conclude 
that the interaction between the different fertilization recipes and the different substrates have a positive effect by 
its physico-chemical properties and high-water retention. 
The results of statistical analysis for flowers number data according to the number of cuts are presented in Graph 
3: 

0
50
100

C1 C2 C3St
em

 h
ei

gh
t (

cm
)

Number of cuts

Stem length according to the 
number of cuts



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Graph 3. Cutting cycles of alfalfa and variation of number of flowers 
 
The results in Graph 3 of flower number showed highest values at the first cutting cycles as compared to the later 
cuttings (P<0.001) that are not as high in initial value. 
Resulting in nonlinear responses (Sanderson et al., 2000) the results showed that with increasing frequency of 
cuttings to three cuttings, number of flowers has been reduced drastically. With the data on number of flowers, if 
cuts are frequent, number of flowers is affected (Orloff, 2007) in a sharp and significant reduction in all the flower 
number.  
The results of this study revealed the consistent effect of cutting on various flower number and as might be 
expected, the timing of flowering for plants responsiveness is a major factor in improving quality variation. 
3.2 Quality Variation Phase of Alfalfa 
This phase describes the influence of the three different cultivation methods and the fertilization recipes on the 
post-harvest quality of alfalfa. 
Crude Protein 
The effects of variations in fertilization recipes and cultivation methods on the Protein content of alfalfa are 
presented in Table 6. 
 
Table 6. Effects of variations in fertilization recipes and cultivation method on the protein content of alfalfa 

Treatments/Cuts CF1 CF2 NFTF1 NFTF2 So Mean of cuts 
C1 28.9a 30.4a

 27.7b 25.8ab 27.3a 28.03a 
C2 27.4b 28.3b 28.5a 28.1a 27.6a 28.01a 

C3 24.3c 24.5c 21c 21b 20.1c 21.7b 
Mean of treatments  26.9b 27.7a 25.4c 24.9 d 24.5e - 

*In columns and rows the numbers with similar exponent represent the absence of a significant difference at p>0.01.   
     
A significant difference (P > 0.01) among the crude protein contents of alfalfa was reported between the 5 groups 
that has a slight superiority (P>0.05) for the CF2 treatment. This difference can be explained by increasing the 
nitrogen level in F2 fertilization recipes which improve the alfalfa nutritive value and result in high protein content. 
This is in agreement with Delevatti et al., 2019 who suggests that Nitrogen application affected the crude protein. 
The mode of cultivation in NFT showed a satisfactory and better-quality protein content values of alfalfa that did 
not differ from that of coconut fiber. This is one of the important outcomes of our study that justifies the search 
for alternatives for the use in animal feeding. 
As reported by El Morsy et al., 2013, alfalfa produced under hydroponic conditions revealed appreciable levels of 
crude protein and digestibility. In contrast to Fazaeli et al., (2012) and Kılıç (2016) who stated that the quality of 
protein content decreased in hydroponic green feed and does not substantially change compared to the other 
treatment. 

010
2030
40

C1 C2 C3N
um

be
r o

f f
lo

w
er

s
Number of cuts

Number of flowers according to 
the number of cuts



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The results of statistical analysis for protein content data according to the number of cuts are presented in Graph 
4: 
 
 

 
 
 
 
 
 

 

 

 
Graph 4. Cutting cycles of alfalfa and variation of protein content 

 
As shown in Graph 4, the results obtained in the current study was gradually decreasing until third cutting cycle. 
It is noted that the first and second cut consistently gave the highest protein content with a non-significant effect. 
This was consistent with Lloveras (2001) who reported the increase in alfalfa protein content from the first cutting 
and decreased in the third one. Probably the most important characteristic is the change in composition with 
advance toward maturity. In their study, Fazeli et al., (2012) and Naik et al., (2015) reported that the alfalfa CP 
content decline following increasing harvest days. 
We can conclude that the stage of cutting of plants has come to be recognized as one of the most important 
considerations in the harvesting of forage crops that had a large impact on protein content. 
Fiber  
The effects of variations in fertilization recipes and cultivation methods on the fiber content of alfalfa are shown 
in Table 7. 
 
Table 7. Effects of variations in fertilization recipes and cultivation methods on the fiber content of alfalfa 

Treatments/Cuts CF1 CF2 NFTF1 NFTF2 So Mean of cuts 
C1 14.8b 13.6b

 18.1b 16.3b 10.9c 14.8c 
C2 17.2ab 14.6ab 21ab 18.2ab 16.3b 17.5b 

C3 20.4a 19.2a 28.3a 24a 20.3a 22.7a 

Mean of treatments  17.5c 15.8d 22.5a 19.9 b 15.8d - 
*In columns and rows the numbers with similar exponent represent the absence of a significant difference at p>0.01 
 

The fiber content of alfalfa from group NFTF1 is significantly higher than the value of the other groups. The results 
of the fiber content showed a positive effect of the NFT substrate for F1, that is slightly higher than that irrigated 
by F2, in favor of the coconut fiber bags and soil that showed lower fiber values with no significant difference 
(P˃0.01) reported between CF2 and So. All of these observations may be due to the composition of the substrates 
and their physical properties (Birle et al., 2008).  
The adequate application of nitrogen and phosphorus levels that had the significant effect under NFT treatment 
(Singh et al., 2003) might be attributed to the highest fiber content in alfalfa. 
It can be concluded that hydroponics shown significant nutritional improvements of crude fiber (Almeida et al., 
2020).  

010
2030

C1 C2 C3Cr
ud

e 
pr

ot
ei

n 
%

Number of cuts

Protein content according to the 
number of cuts



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In support of the present findings, Ndaru et al., 2020 found that the crude fiber content was within a range of 5, 61 
– 10, 71%. It is relatively lower than that obtained in our study with a value of 22.5% and 19.9% for F1 and F2 
respectively.  
The results of statistical analysis for fiber content data according to the number of cuts are presented in Graph 5: 
 
 
 

 
 
 

 
 
 
 

Graph 5. Cutting cycles of alfalfa and variation of fiber content 
 

As shown in Graph 5, the result of the study showed that the fiber content of alfalfa in the third cutting cycle was 
significantly higher as compared to the first and second cuts (P<0.001). Further, our results were in line with the 
results of Bandara et al., (2016) reported that crude fiber content of alfalfa in the first cut were 11.63%, and in the 
second one as 16.9% respectively.  
In the case of cutting schedule, fiber content increased with the crop age advancement (Popovic, 2001).  
From the performed analyses, it can be observed that among the elements of management of alfalfa cultivation, 
fertilization and cut had a high statistical influence on investigated crude fiber content. Lamb et al., 2003; Rimi et 
al., 2010).  
Ash  
The effects of variations in fertilization recipes and cultivation methods on Ash content of alfalfa are shown in 
Table 8. 
 
Table 8. Effects of variations in fertilization recipes and cultivation methods on Ash content of alfalfa 

Treatments/Cuts CF1 CF2 NFTF1 NFTF2 So Mean of cuts 
C1 13.4a 13.5a

 12.48a 12.07a 14.3a 13.2a 
C2 8.9c 9.3b 9b 8.7c 9.5b 9.1c 

C3 10b 12.4a 9.6b 10.5b 10.5ab 10.7b 

Mean of treatments  10.8c 11.9a 10.38d 10.42 cd 11.4b - 
 *In columns the figures with similar exponent represent the absence of a significant difference at p>0.05.    
 
The number of ashes from the CF2 show a significant difference (P˃0.01) compared to the groups CF1, NFTF1, 
NFTF2 and So. 
The ash content in CF reported a significant difference than that in NFT and Soil. This probably comes down to 
the composition of the substrates and their physical properties (Birle et al., 2008). 
Notably, the highest ash content (p< 0.01) was recorded in CF was 11.9 with F2 fertilizer and 10.8% in F1 
respectively. This can probably due to the sufficient amount of nutrients that ensures favorable conditions for high 
quality. 
The effect of the two fertilization recipes F1 and F2 was negligible when using them in NFT. Kumar et.al., (2021) 
indicated that not only optimal amounts of nutrients but also their proper balance is significant for proper plant 
development.  

010
2030

C1 C2 C3Fi
be

r %
 

Number of cuts

Fiber content according to the 
number of cuts



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We can conclude that the data acquired shows the characterization and analysis of the ash content depending on a 
large number of factors including growing conditions and fertilization and it indicated that effectively react on the 
treatment with fertilizers Platače & Adamovičs, (2014).  
The results of statistical analysis for ash content data according to the number of cuts are presented in Graph 6: 

 
 
 
 
 
 
 
 
 
 

 
Graph 6. Cutting cycles of alfalfa and variation of ash content 

 
As shown in Graph 6, the result of the study showed that the ash content in the first cutting cycle was significantly 
higher as compared to second cut (P<0.001) that rapidly declines while it increases slowly during the third one. 
It was revealed that first cutting offers the opportunity for harvesting the highest forage quality of the growing 
season as compared to subsequent cuttings. Hence, a timely first cut is essential if high forage quality is the primary 
objective (Rankin, 2013). 
As a result, in alfalfa cultivation the higher yield and quality can be obtained only using the proper cutting (Tabacco 
et al., 2003). 
As alfalfa maturity advanced ash content decreased (P< 0.01) which agreed with the results of Marković et al., 
(2009). Generally, cuttings applied more frequently led to a decrease in fresh forage yield (Kallenbach et al., 2002; 
Ventroni et al., 2010).  
These results indicate additional factors such as multi-cutting may affect ash content and composition as well, in 
particular, the first-cutting can be, and often is higher than any other cutting (Rankin, 2013).  
4. Conclusion and Perspectives  
Our study shows that the use of two different cultivation methods associated with the two different fertilization 
recipes used have succeeded in the productivity and quality variation during the three different cuts of alfalfa in 
Coconut fiber bags followed by NFT system.  
Regarding the productivity phase of alfalfa, the results showed that during the three cutting repetition, a good 
interaction was noticeable at this combination level of coconut fiber cultivation mode and the F1 fertilization recipe 
(CF1) followed by NFT that positively affecting the number of leaves, flowers and stem of alfalfa with a best 
cutting found at cut 1.  
Concerning the quality variation phase of alfalfa, our results indicate that the crude protein and ash content are in 
favor of alfalfa grown in soilless CF2. For fiber content, F1 was the most favorable and NFTF1 reported relatively 
higher fiber values indicating better quality. Regarding the cutting system, cut 1 showed the best results. 
In summary, the introduction of hydroponics has become a viable alternative to consider and can be recommended 
to Lebanese farmers to improve their quality forage and to overcome the Lebanese economic crisis especially since 
this system is relatively inexpensive. 
In perspective, we recommend and plan to pursue complementary work on the effect of different cultivation system 
and fertilization in alfalfa as well as the study of the effectiveness of different cut. In order to achieve the overall 
objective, this new interest should become more important during the next years regarding the yield and quality of 
alfalfa and thus it is an opportunity for livestock to develop in future. 
 

05
1015

C1 C2 C3

Ash content according to the 
number of cuts



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