Evaluation of Compost Integrated with Chemical Fertilizer for better production of Maize in Shashemene District of West Arsi Zone, Oromia

Evaluation of Compost Integrated with Chemical Fertilizer for better production of Maize in Shashemene District of West Arsi Zone, Oromia

Kasahun Kitila* and Abay Chala

Oromia Agricultural Research Institute, Adami Tulu Agricultural Research center, Ziway, Ethiopia

American Journal of Agricultural Research

The effect of integrated use of compost and urea on yield of and yield component was assessed in a field experiment in Shashemene district during 2016-2018. In this experiment, compost was replaced UREA at different rate depending on its quality. Compost quality was analyzed mainly for Total nitrogen to compute its equivalency with UREA. Accordingly, It was identified that average total nitrogen in compost was 1%.Therefore, 100kg UREA (46kg N) is equivalent to 4600kg compost (4.6ton). The treatments were control (100kg DAP+100kg UREA), 100%compost (4.6ton) +100kg DAP, 75% compost (3.45ton)+25%UREA+ 100kg DAP, 50% compost (2.3ton) +50%UREA+100kg DAP, 25%compost (1.15ton) +75%UREA +100kg DAP. Maize (variety: Shano)) was planted in rows. Data on grain yield and yield components were analyzed. Soil samples were also collected to evaluate the residual effect of compost on soil properties. The results indicated that maximum grain yield (93kunt ha-1) of maize was obtained in treatment (2) that received sole compost plus 100kg DAP ha-1. The next higher yield was obtained in treatment 3 and 4 that received both compost and UREA with the ratio of 75:25 and 50:50 respectively. Comparing with sole chemical fertilizer treatment, the crop yield was significantly higher and different (p≤0.05) in all treatments. The residual soil fertility after maize harvest was proportional to the level of compost used. Except for total nitrogen, available potassium and phosphorous in sole chemical fertilizer application is smaller and highly significantly different (p≤0.05) from the rest of the treatments indicating that all total nitrogen in compost is available for crop in the first year of application while potassium and phosphorous availability for the crop is partially delayed. Based on the result, it was economically and environmentally recommended to use ISFM for sustainable maize production in the area.

Keywords: Soil fertility, compost, inorganic fertilizer,yield and yield components

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Kasahun Kitila and Abay Chala. Evaluation of Compost Integrated with Chemical Fertilizer for better production of Maize in Shashemene District of West Arsi Zone, Oromia. American Journal of Agricultural Research, 2019,4:43.


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