Evaluation of the Effectiveness of Modified Lignosulphonate-Chelated Zinc Fertilizer on Sweet Corn Yield

Zinc is an essential micronutrient for maize, enhancing nutrient uptake, enzyme function, and crop resilience. Zinc deficiencies in agricultural soils can significantly limit maize growth and yield. This study was, conducted from January to April 2024 at Agri Search India Pvt. Ltd. in Nashik, Maharashtra to assess the impact of various zinc formulations, ZnO, Zn-EDTA, ZnSO₄•7H₂O, Modified Lignosulphonate Chelated Fertilizer (MLCF), and Borrechel-Zn applied as foliar sprays on the sweet corn variety Sweet Bite NS 8601, with a control treatment for comparison. MLCF, formulated using lignosulphonate derived from wood pulping by-products, acts as a natural chelator and slow-release carrier, enhancing zinc availability while reducing environmental impact. Key findings revealed that MLCF significantly outperformed other treatments in improving plant growth and cob yield, achieving the highest fresh cob weight (264.7 g), dry cob weight (90.5 g), cob girth (15.6 cm), grains per row (36.6), and dry weight of ten cob grains (60.5 g). As a natural and renewable product, MLCF minimizes chemical leaching and supports soil health, presenting a sustainable alternative to synthetic chelates. These results indicate that MLCF is an effective and eco-friendly option for zinc supplementation, promoting enhanced crop performance and contributing to sustainable agriculture.