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Abstract                 Volume:9  Issue-1  Year-2021          Original Research Articles


Online ISSN : 2347 - 3215
Issues : 12 per year
Publisher : Excellent Publishers
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Effect of Organic and Inorganic Fertilizers on Agronomic Growth and Soil Properties of Coffee (Coffea arabica L.) at Jimma, Southwestern Ethiopia
Obsa Atnafu, Mohammed Kedir, Ewnetu Teshale and Meseret Nugusie
Jimma Agricultural Research Center, Natural Resource Management
*Corresponding author
Abstract:

A field experiment was conducted at Jimma Agricultural Research Center, Agaro Agricultural Research Sub Center, southwestern Ethiopia for five consecutive cropping seasons from 2015/16 to 2019/20 to evaluate effect of organic (conventional compost) and inorganic NP fertilizers on agronomic growth and soil properties of coffee (Coffea arabica L.). The treatments consisted of 100% recommended decomposed coffee husk alone, 100% recommended NP rate alone, 100% of NP + 25% of compost (DCH), 75% of NP + 50% of compost (DCH), 50% of NP + 50% of compost (DCH), 50% of NP + 75% of compost (DCH), 25% of NP + 75% of compost (DCH), 25% of NP + 100% of compost (DCH) and Control (without input, farmers’ practice). The experiment was laid out in randomized complete block design with three replications. Higher yield of clean coffee yield was obtained from the application of 50% dose of nitrogen and phosphorous from inorganic fertilizer sources and 50% dose of decomposed coffee husk (2083.5kg ha-1) while the lowest clean coffee yield (1570.5kg ha-1) was obtained from no application of fertilizers. Application of organic fertilizers (compost) with inorganic fertilizers gave statistically similar yield components to NP fertilizer alone for five years. Significant differences (p>0.05) due to soil nutrient sources were observed in coffee height where inorganic fertilizer treatment resulted in tallest coffee plants (348.23 cm) and no application of nutrients having the shortest coffee trees (200.49 cm) after two year. Lower yield and yield components of Limu1 coffee were achieved from no application of organic and inorganic fertilizer sources. In conclusion, organic fertilizers (conventional compost) alone cannot provide a viable substitute for inorganic fertilizer without causing a significant yield. Therefore, integrated use of organic and inorganic fertilizers was recommended for coffee production at Jimma, southwestern Ethiopia and other similar agro ecology.

Keywords: Coffee, Decomposed coffee husk, Integrated, Organic.
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How to cite this article:

Obsa Atnafu, Mohammed Kedir, Ewnetu Teshale and Meseret Nugusie. 2021. Effect of Organic and Inorganic Fertilizers on Agronomic Growth and Soil Properties of Coffee (Coffea arabica L.) at Jimma, Southwestern Ethiopia.Int.J.Curr.Res.Aca.Rev. 9(1): 86-94
doi: https://doi.org/10.20546/ijcrar.2021.901.008