Studies on agrometeorological indices in rice as affected by different crop establishment methods and varieties

A field experiment was conducted on Agronomy farm, College of Agriculture, Dapoli, Maharashtra, India during Kharif 2015 and 2016 to study the agrometeorological indices on rice as affected by different crop establishment methods and varieties. The experiment was laid out according to split plot design with three replications. Twenty four treatment combinations comprised of four main plot treatments of crop establishment method (drilling-M₁, early transplanting-M₂, normal transplanting-M₃ and Thomba transplanting-M₄) and six subplot treatments of variety (Karjat 184-V₁, Palghar 1-V₂, Karjat 2-V₃, Sahyadri 2-V₄, Karjat 3-V₅ and Karjat 7-V₆). To obtain higher yield from Kharif rice, crop should to be established by transplanting method with variety Sahyadri-2 followed by Karjat-7. However, early transplanting and Thomba methods were established as the alternatives to conventional transplanting method. Because with Thomba method of transplanting we can complete transplanting of rice even if insufficient rainwater is there for puddling and get the better yield comparatively. The highest GDD, Hydrothermal units and Helio-thermal units required by Karjat-2 variety, while higher Heat use efficiency and Helio-thermal use efficiency recorded by Sahyadri-2 variety.