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Abstract

Evaluation of Head Cabbage Varieties (Brassica oleraceae var. capitata L. ) on different Rates of Nitrogen Fertilier in the Condition of Lemo Area at Hadiya Zone, Southern Ethiopia

Cabbage is an important food and cash vegetable in many parts of Southern Ethiopia. But, its production and productivity is low owing to a number of constraints. Disorganized agronomic practices, such as low rates of Nitrogen fertilizers and lack of improved varieties are among the major problems. This experiment was conducted during the summer cropping season of 2019/2020 at Wachemo University, Southern Ethiopia. To evaluate the effect of Nitrogen fertilizer rates on three varieties of head cabbage yield and yield components. Nitrogen rates (0,34.5, 69 and 103.5 kgNha−1) with three varieties (Rossen, Royal and Delta) were used and laid out by randomized complete block design in a factorial arrangement replicated three times. The results revealed that, most of yield components were significantly (P<0.05) influenced by the interaction effect of Variety and Nitrogen fertilizer. Specifically, highest head weight (4.07 Kg plant-1), highest marketable head yield (40.69 t ha-1) and highest total head yield (48.27 t ha-1) were recorded from Rossen variety at 103.5kgNha−1. While, the lowest performance in each parameters was from Delta variety at control treatment. However, the highest marginal rate of return (11,666.67%) with its optimum net benefit value of (512,275.00 ETB ha-1) was recorded at rate of 69kgNha−1 Rossen variety. Yet, application of 69 kgNha−1 at the same variety (Rossen) had also resulted higher MRR (7,908.06%) and highest net benefit (598,275.00 ETB ha-1). Therefore, these two can be alternatively used. Besides, as the study was done at only one location in a single season, it is recommended to repeat the study for more than one season at different locations.


Author(s): Temesgen Tadesse, Abebe Assefa and Dargicho Dutamo

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