Site Specific Nutrient Management for Maize (Zea Mays L) in Southern Dry Zone of Karnataka
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 4
Abstract
A field experiment was conducted during kharif seasons, of 2013, 2014 and 2015 in five locations i.e., Nandinathapura, Chikkahonnur, Charapura, Beguru and Chowthi villages of Periyapatna taluks, to study the effect of Site Specific Nutrient Management, for Maize. Yield responses to fertilizer application, was in the order of N>K>P ranging in an average, from 22.63 to 26.64 q/ha for N, from 10.68-17.89 q/ha for K, and from 5.42 to 9.60 for P. The average increase in the grain yield of maize in omission plots, is in the order of PK (59.4 q/ha) < NP (70.2 q/ha) < NK (76.9 q/ha). This shows that, N is the most limiting nutrient, affecting maize yield. Across the locations, attainable yields measured in NPK and SSNM, plots on an average ranged from 84.2 to 91.0 q/ha while yields in the FFP plot, on average ranged from 68.0 to 73.6 q/ha. This indicates that ICM, mainly seed treatment with fungicide, herbicide for weed control and ZnSO4 application, had positive effect on the crop growth and yield. Grain yield in SSNM plot was 5.5 to 7.7q/ha more than the NPK plots, although these two treatments are statistically at par with each other.
Authors and Affiliations
S. B. Yogananda, T. Sheshadri, P. Thimme Gowda, Shruthi M. K
Keywords
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