Effect of polyhalite on yield, nutrient uptake by wheat and soil properties

Abstract

This experiment was conducted at the crop research farm of the ICAR, Indian Agricultural Research Institute, New Delhi during the rabi season of 2021–22. The research experiment was laid out in a randomized block design with three replications of twelve treatments. The nutrient uptake by grain and straw was significantly higher with the application of 100% K dose through polyhalite. The application of a 75% K dose through polyhalite results in significantly higher values of total K and S uptake over 50% K through MOP + 50% K through polyhalite, and 50% K through MOP + S (equivalent to T6). The treatment comprising 100% K dose through polyhalite depicted higher availability of soil available NPKS and organic carbon. The value of soil microbial parameters e.g. MBC and FDA were shown highest with the application of polyhalite treatments than with conventional fertilizer. Potassium and sulphur are two highly important elements for the production of high-quality, oil, crop, and protein, but most Indian farmers are unfamiliar with the advantages, which is why there aren't applying; in this circumstance, crops are taking soil nutrients, causing K and S deficiencies in Indian soils. Therefore use and awareness of polyhalite may be a beneficial option for improving soil health, addressing nutrient imbalances, and raising crop quality and productivity.