Indian Journal of Agronomy

  • Year: 2020
  • Volume: 65
  • Issue: 4

Effect of site-specific nutrient management on productivity, soil fertility and nutrient uptake in maize (Zea mays)

  • Author:
  • U.P. Shahi1, V.K. Singh2,*, Abhinav Kumar3, Prem Singh4, B.P. Dhyani5, Anand Singh3
  • Total Page Count: 7
  • DOI:
  • Page Number: 432 to 438

1Associate Professor (Soil Science), Sardar Vallabhbhai Patel University of Agriculture and Technology, Modipuram, Meerut, Uttar Pradesh250 110

2Director, Central Research Institute for Dryland Agriculture, Hyderabad, Telangana500 059

3Senior Research Fellow, Central Research Institute for Dryland Agriculture, Hyderabad, Telangana500 059

4M.Sc. Student, Central Research Institute for Dryland Agriculture, Hyderabad, Telangana500 059

5Professor (Soil Science), SVPUATs, Modipuram230 110

Sardar Vallabhbhai Patel University of Agriculture and Technology, Modipuram, Meerut, Uttar Pradesh250 110

*Corresponding author's Email: vkumarsingh_01@yahoo.com

Online published on 27 August, 2021.

Abstract

A field experiment was conducted during the spring season of 2015 and 2016 at Crop Research Centre, Meerut, Uttar Pradesh, to study the effect of site-specific nutrient management (SSNM) on productivity, soil fertility and nutrient uptake of spring maize (Zea mays L.). Typic Ustochrept series soil of the experimental field was well-drained, sandy loam, slightly alkaline, low in soil organic carbon and available N, medium in available P, K and S with optimal DTPA-Zn and B content. Eleven treatments comprising 100% recommended dose of fertilizer (RDF) NP, 100% NPK (RDF), 100% NP (RDF) + 125% K, 100% NP (RDF) + 150% K, 125% NPK (RDF), 150% NPK (RDF), 100% NP (RDF) + 3 t/ha crop residue, 100% NP (RDF) + 5 t/ha FYM, 100% NP (RDF) + 3 t/ha sulphonated pressmud (SPM), site-specific nutrient management (SSNM) (+K) and SSNM (−K), were replicated thrice in randomized block design. The 2 years pooled experimental results revealed that, the maximum Kernel yield was observed with SSNM option which was significantly higher over the others. Maximum N, P, K, S, Zn and B uptake (179.10 kg/ha, 44.68 kg/ha, 171.32 kg/ha, 40.13 kg/ha, 379 g/ha and 253 g/ha), respectively, was recorded with SSNM followed by 150% NPK application. Fertilizer use as per SSNM also resulted in higher yield and uptake than 100% RDF. Improved soil-fertility parameters, viz. soil available K, S, DTPA-Zn and B, were also noticed with SSSM which remained significantly higher than the others. Improved K rates (25 and 50%) in RDF or additive use of organics (FYM/SPM/crop residue) also had positive influence on the yield, nutrient uptake and soil parameters.

Keywords

Maize, Nutrient uptake, Potassium management, Soil fertility, Site-specific nutrient management