Site-specific Nutrient Management in Maize Tract of Khammam-based on STCR and Targeted Yield Approach
V. B. Pandit *
Department of Soil Science and Agricultural Chemistry, Professor Jayashankar Telangana State Agriculture University, Rajendranagar, Hyderabad, Telangana - 500030, India.
T. Anjaiah
Secondary and Pollutant Elements, ARI, PJTSAU, Rajendranagar, Hyderabad - 500030, India.
M. Uma Devi
Northern Telangana Zone, Jagtial, PJTSAU, Telangana - 500030, India.
T. L. Neelima
Water Technology Centre, PJTSAU, Rajendranagar, Hyderabad - 500030, India.
D. Srinivasa Chary
Statistics and Mathematics, College of Agriculture, PJTSAU, Rajendranagar, Hyderabad – 500030, India.
*Author to whom correspondence should be addressed.
Abstract
Soil variability is major factor behind the less yield, higher cost of cultivation and minimum profit. Geostatistics, principal component analysis and Fuzz C mean cluster algorithms are used to check soil spatial variability and help in reduction of spatial variability by diving field in to different management zone. Spatial variability of soil of Telangana was measured and also developed eight management zones for four ha using geostatistical analysis, Principal component analysis and Fuzz C mean cluster algorithm. Using above information, Field experiments were conducted at Khammam, Telanagana during rabi-2021 to demonstrate SSNM technique on farmer field using soil test crop response and targeted yield concept in maize crop. In this study, there are three treatments used: Treatment -1: - Fertilizer application based on eight soil sample testing, Treatment- 2: - Fertilizer application based on one soil sample testing, and Treatment -3: - Farmer fertilizer practices. The study concluded that grain yield over farmer fertilizer practices was highest in treatment -1 followed by treatment -2. Maximum gross return and gross return per ha over farmer fertilizer practice were observed in treatment -1 (Rs. 170170 and Rs. 26180.00 respectively) followed by treatment -2 (Rs. 157080 and Rs. 13090.00 respectively).
Keywords: Gross return, maize, soil test fertilizer application, targeted yield