DefinePK

Abstract

Abstract | To figure out the best combinations of humic acid and zinc with basic NPK doses on Maize cultivar “Azam White”, a study was executed at the Agriculture Research Institute, D.I. Khan, K.P.K., Pakistan during the Kharif season, 2022. Randomized Complete Block Design was used for the field experiment wherein seven treatments were replicated thrice to get the average results. The treatments included; Untreated control, Humic acid (25 kgha-1), NPK (120:60:60 kgha-1), zinc (5 kgha-1), Humic Acid + NPK, Zinc + NPK and Humic Acid + NPK + Zinc. Among all the nutrient treatments studied, it was found that the combined application of Humic Acid + NPK + Zinc proved to be the most efficient and effective treatment which not only boosted the agronomic parameters like germination percentage (94.65%), plant height (222.20 cm), number of cobs (2.65 plant-1), number of grains (347.23 cob-1), 100 grains weight (28.25 g) and grain yield (6.87 t ha-1), but also gave maximum net returns (2.40). Since this treatment can be the most productive for farmers of the target locality, therefore it was recommended for general use in maize crop.