The Effect of Site Specific Nutrient Management (SSNM) on Sunflower Production
K. Prabhakar, K. Venkataramanamma, B. V. R. P. Reddy, Y. S. Satish Kumar, K. Ramesh, R. Narasimhulu, K. Satish Babu, K. Arun Kumar, N. C. Venkateswarlu
International Journal of Plant & Soil Science · pp. 753–762 · Published 2 Oct 2023
10.9734/ijpss/2023/v35i203862Abstract
A field experiment was conducted during Kharif and Rabi seasons of 2017-18 to 2021-22 at Regional Agricultural Research station Nandyal to study the SSNM effect on yield system economics of sunflower based emerging cropping systems and soil nutrient status. Maize- sunflower cropping system recorded significantly higher sunflower equivalent yield which is on par with Soybean- sunflower cropping system. Gross and net returns were highest with maize – sunflower cropping system with 100% STCR fertilizer dose followed by Soybean - sunflower cropping system with 100% STCR fertilizer dose. Minimum returns were obtained when Sunflower - chickpea cropping system with 50% STCR adopted. Under ID condition cultivation of maize – sunflower cropping system with 100% STCR fertilizer dose to rabi sunflower showing effect on productivity and profitability of cropping system instead of sunflower- chickpea cropping system with RDF. Initial and final soil available nitrogen, phosphorous and potassium nutrients status was estimated in all rabi crop seasons of investigation which shown significant effect due to cropping systems and fertilizer doses.
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