1Associate Professor, Sardar Vallabh Bhai Patel University of Agriculture and Technology, Modipuram, Meerut, Uttar Pradesh, 250 110
2SRF, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012
3Head of India, Sirius Minerals, PLC, U.K
Sardar Vallabh Bhai Patel University of Agriculture and Technology, Modipuram, Meerut, Uttar Pradesh, 250 110
*Corresponding author's e-mail: vkumarsingh_01@yahoo.com
Online published on 20 July, 2020.
A field experiment was conducted during the spring season of 2015–2016 on Typic Ustochrept soil of western Indo-Gangetic Plains to evaluate the effect of potassium management on crop growth, yield and economics of spring maize in western Uttar Pradesh. Twelve treatments comprising 100% NP, 100% NPK, 100% NP + 125% K, 100% NP + 150% K, 125% NPK, 150% NPK, 100% NP + Crop residue, 100% NP + FYM, 100% NP + SPM, SSNM, SSNM-K and SSNM+K were evaluated in a randomized block design with these replications. The data on growth, yield and its contributing traits recorded and expressed on plot area basis (15 m2), were maximum with the application of 150% NPK. The experimental results revealed that growth attributes (plant height, number of functional leaves, dry matter accumulation and leaf area index), yield attributing traits viz., number of cobs, cob length, number of grains, cob weight, grain weight, test weight, shelling (%), grain, stover and biological yield and uptake of nitrogen (N), phosphorus (P) and potassium (K) in maize differ significantly among different treatments and were maximum with the application of 150% NPK. The response of SSNM was statistically similar with 150% NPK in most of the growth and yield parameters.
Potassium management, Spring maize productivity, SSNM
