1Agronomy SectionICAR-National Dairy Research Institute, Karnal-132 001, Haryana, India
2Department of Agronomy, CCS Haryana Agricultural University, Hisar-125 004, Haryana, India
Department of Agronomy, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola-444 104, Maharashtra, India
*Corresponding Author: Subhradip Bhattacharjee, Agronomy SectionICAR-National Dairy Research Institute, Karnal-132 001, Haryana, India, Email: subhradip25@gmail.com
Online Published on 30 March, 2022.
The black soils (vertisols) are often considered to be high in potassium content however; under intensive cultivation of high nutrient demanding crop like maize; the soil available potassium might not be sufficient to fulfil the demand. Moreover; the interaction between potassium and micronutrients like zinc has to evaluated for higher crop yield under dryland condition.
The experiment was laid out in factorial RBD design with two factors, i.e., potassium (K) and zinc (Zn), with three levels of each (K1- 30 kg K2O ha−1, K2- 60 kg K2O ha−1, K3- 90 kg K2O ha−1; Zn1- 20 kg ZnSO4 ha−1, Zn2- 30 kg ZnSO4 ha−1 and Zn3- 40 kg ZnSO4 ha−1).
Statistical interpretation of experimental data revealed that application of potassium at 60 kg K2O ha−1 and 30 kg of ZnSO4 ha−1 resulted improved plant height, number of functional leaves plants−1, leaf area index, dry matter accumulation, grain yield, stover yield and shelling percentage in maize. Interestingly positive interaction has also been recorded between potassium and zinc nutrition.
Growth, Maize, Potassium, Yield, Zinc
