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 VOLUME Vol.05 Issue01 2025 

PAGE NO. 1-3 

 
 
 
 
 

Optimizing Okra Production: A Comparative Study of 

Fertilization Techniques in Kebbi State 
 

Chukwu Balogun 

Department of Agricultural and Bioenvironmental Engineering, Waziri Umaru Federal Polytechnic Birnin Kebbi, Nigeria 

 

Received: 18 November 2024; Accepted: 20 January 2025; Published: 01 February 2025 

 

Abstract: Okra (Abelmoschus esculentus) is a vital vegetable crop widely cultivated for its nutritional and 
economic value. This study examines the impact of organic and inorganic fertilization techniques on okra growth 
and yield in Kebbi State, Nigeria. A field experiment was conducted to compare the effectiveness of organic 
fertilizers (compost and manure) and inorganic fertilizers (NPK 15-15-15) on key agronomic parameters, including 
plant height, leaf count, flowering rate, and pod yield. Data were collected at different growth stages and 
statistically analyzed to determine significant differences in growth performance. Results indicate that while 
inorganic fertilizers promoted rapid vegetative growth, organic fertilizers contributed to improved soil health and 
sustained productivity. The study highlights the benefits and trade-offs of each fertilization method, providing 
insights for farmers and policymakers on optimizing okra production in Kebbi State.   

 

Keywords: Small-scale irrigation, Renewable energy, Solar power, Wind power, Agricultural sustainability, Selnica 
Podravska, Energy efficiency, Water resource management, Irrigation systems. 

 

Introduction: The Okra (Abelmoschus esculentus) is an 
essential vegetable crop widely cultivated for its 
nutritional, medicinal, and economic benefits. It is a 
rich source of vitamins, minerals, fiber, and 
antioxidants, making it a staple in many diets across 
Nigeria and beyond. In Kebbi State, okra farming plays 
a significant role in food security and income 
generation for smallholder farmers. However, 
achieving optimal growth and yield remains a challenge 
due to soil fertility depletion and inadequate 
fertilization practices. 

Fertilization is a crucial factor in crop production, 
influencing plant growth, development, and yield 
quality. Farmers commonly use both organic and 
inorganic fertilizers to enhance soil fertility and 
improve crop performance. Organic fertilizers, such as 
compost and animal manure, improve soil structure, 
water retention, and microbial activity, contributing to 
long-term soil health. In contrast, inorganic fertilizers, 
particularly nitrogen-phosphorus-potassium (NPK) 
formulations, provide readily available nutrients that 
promote rapid plant growth and high yields. Despite 
their benefits, excessive or improper use of inorganic 
fertilizers can lead to soil degradation and 

environmental concerns. 

This study aims to compare the effects of organic and 
inorganic fertilization techniques on okra growth and 
yield in Kebbi State. By evaluating key agronomic 
parameters such as plant height, leaf count, flowering 
rate, and pod yield, this research seeks to identify the 
most effective and sustainable fertilization method for 
optimizing okra production. The findings will provide 
valuable insights for farmers, agricultural extension 
workers, and policymakers in promoting sustainable 
and profitable okra farming practices. 

METHODOLOGY 

Study Area 

This study was conducted in Kebbi State, Nigeria, a 
region known for its predominantly agrarian economy. 
Kebbi State is characterized by a tropical climate with 
distinct wet and dry seasons, making it suitable for okra 
cultivation. The study site was selected based on its 
accessibility, history of okra farming, and soil 
characteristics. The soil type in the study area is sandy-
loam, which is common in the region and supports the 
growth of various crops, including okra. The average 
annual temperature ranges between 26°C and 39°C, 
with an annual rainfall of approximately 800-1,000 mm, 

 



American Journal Of Agriculture And Horticulture Innovations 2 https://theusajournals.com/index.php/ajahi 

American Journal Of Agriculture And Horticulture Innovations (ISSN: 2771-2559) 
 

 

which provides adequate moisture for plant growth. 

Experimental Design 

A field experiment was established using a randomized 
complete block design (RCBD) with three replications 
to minimize variability and ensure reliable results. The 
study consisted of three treatment groups: (1) organic 
fertilization, (2) inorganic fertilization, and (3) a control 
group with no fertilization. Each treatment was applied 
to a designated plot, with each plot measuring 3m x 
3m. A buffer zone of 1 meter was maintained between 
plots to prevent nutrient crossover between 
treatments. The experiment was conducted during the 
rainy season to take advantage of natural precipitation, 
reducing the need for artificial irrigation. 

Soil Preparation and Fertilizer Application 

The experimental plots were cleared, plowed, and 
harrowed to improve soil aeration and create a suitable 
seedbed for planting. Soil samples were collected 
before planting to analyze nutrient content, pH level, 
and organic matter composition. The organic fertilizer 
used in the study was well-decomposed poultry 
manure, applied at a rate of 10 tons per hectare, as 
recommended for vegetable crops. The inorganic 
fertilizer used was NPK 15-15-15, applied at a rate of 
200 kg per hectare. The organic fertilizer was 
incorporated into the soil two weeks before planting to 
allow for decomposition, while the inorganic fertilizer 
was applied in two split doses—the first at planting and 
the second four weeks later, ensuring efficient nutrient 
uptake by the plants. 

Okra Variety and Planting Procedure 

The okra variety used in the study was Clemson 
Spineless, a widely cultivated variety known for its high 
yield and adaptability to different environmental 
conditions. Seeds were sourced from a certified 
agricultural supplier to ensure quality and uniformity. 
The seeds were sown directly into the field at a depth 
of 2 cm, with a spacing of 60 cm between rows and 30 
cm between plants. Each plot contained 25 plants, 
ensuring adequate replication for statistical analysis. 
Thinning was performed two weeks after germination 
to maintain a uniform plant population. 

Agronomic Data Collection 

To assess the effects of different fertilization methods 
on okra growth and yield, various agronomic 
parameters were recorded at different growth stages. 
Data collection was conducted at weekly intervals, 
beginning two weeks after planting. The key 
parameters measured included: 

Plant Height: Measured from the base to the tip of the 
tallest leaf using a measuring tape. 

 

Number of Leaves per Plant: Counted manually to 
assess vegetative growth. 

Flowering Rate: Recorded as the number of flowers per 
plant to determine reproductive development. 

Pod Yield: Harvested pods were counted, weighed, and 
recorded to evaluate overall productivity. 

Statistical Analysis 

Data collected from the experiment were subjected to 
statistical analysis using Analysis of Variance (ANOVA) 
to determine significant differences among treatments. 
Mean comparisons were conducted using the Least 
Significant Difference (LSD) test at a 5% significance 
level (p<0.05). Statistical software such as SPSS or R was 
used for data processing and analysis. Graphs and 
tables were used to present the results clearly and 
concisely. 

Environmental and Management Considerations 

The experiment was conducted under natural field 
conditions, with minimal external interventions apart 
from the application of fertilizers. Weeds were 
controlled manually to prevent competition for 
nutrients, and pests were managed using organic 
methods to minimize external chemical influence. The 
study also considered environmental sustainability by 
assessing soil health before and after the experiment to 
determine the long-term effects of organic and 
inorganic fertilization on soil quality. 

Ethical Considerations 

The study adhered to ethical guidelines for agricultural 
research, ensuring that no harmful chemicals were 
used beyond recommended agricultural practices. 
Local farmers were engaged and informed about the 
purpose of the study, with knowledge-sharing sessions 
conducted to enhance awareness of sustainable 
fertilization practices. The findings of the study were 
shared with relevant agricultural extension officers to 
support local farmers in optimizing okra production. 

RESULTS 

The results of the study showed significant differences 
in okra growth and yield among the treatment groups. 
The plants treated with inorganic fertilizer exhibited 
the highest plant height, leaf count, and early flowering 
rate compared to those treated with organic fertilizer 
and the control group. However, organic fertilizer 
treatment resulted in improved soil structure and long-
term fertility benefits. The control group had the lowest 
growth performance, indicating the importance of 
fertilization in optimizing okra production. Pod yield 
was significantly higher in inorganic fertilization plots, 
followed closely by organic fertilization, while the 
control plots recorded the lowest yield. 



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American Journal Of Agriculture And Horticulture Innovations (ISSN: 2771-2559) 
 

 

DISCUSSION 

The findings of this study highlight the effectiveness of 
both organic and inorganic fertilizers in enhancing okra 
growth and yield, with inorganic fertilizers showing 
immediate effects on plant growth and productivity. 
However, the long-term benefits of organic 
fertilization, such as improved soil health and 
sustainability, cannot be overlooked. While inorganic 
fertilizers provided quick nutrient availability, their 
excessive use could lead to soil degradation over time. 
The study suggests that a combination of both organic 
and inorganic fertilization may be the most effective 
strategy for maximizing okra production while 
maintaining soil fertility in Kebbi State. 

CONCLUSION 

This study demonstrated that fertilization plays a 
critical role in optimizing okra production in Kebbi 
State. Inorganic fertilizers resulted in higher yield and 
faster growth, whereas organic fertilizers contributed 
to long-term soil health and sustainability. Based on 
these findings, it is recommended that farmers adopt 
an integrated fertilization approach, combining both 
organic and inorganic methods, to enhance crop 
productivity while preserving soil quality. Further 
research is suggested to explore the long-term effects 
of different fertilization techniques on soil properties 
and yield stability in subsequent farming seasons. 

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