Study of Agrometeorological Indices as Affected by Different Duration Rice Varieties and Crop Establishment Methods

Abstract

A field experiment was conducted on Agronomy farm, College of Agriculture, Dapoli, Maharashtra, India during kharif (June) 2015 and 2016 to study of agrometeorological indices as affected bydifferent duration rice varieties and crop establishment methods. The experiment was laid out according to split plot design with three replications. Twenty four treatment combinations comprised of four main plot treatments: Drilling, Early transplanting (15 days after sowing), Transplanting as per recommendation (21 days after sowing) and Transplanting with Thomba method (under insufficient rain water for puddling, this method usually preferred. In this case transplating has been completed without puddling. With the help ofpointed bamboo stick holes has been made and seedlings inserted into that holes) and six subplot treatments Karjat-184, Palghar-1, Karjat-2, Sahyadri-2, Karjat-3 and Karjat-7. 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 are the alternatives to conventional transplanting method. Because with Thomba method 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. Rice, Crop establishment methods, varieties, agrometeorological indices

Estimation of Actual Evapotranspiration and Crop Coefficient of Transplanted Puddled Rice Using a Modified Non-Weighing Paddy Lysimeter

“…From the results, it was concluded that solar radiation, sunshine hours, Tmax, and wind speed positively affected evapotranspiration, whereas RHmean negatively affected evapotranspiration (ET 0 -PM, ET 0 -Pan and ET a ). Similar patterns of influence of these weather variables on evapotranspiration estimation were also reported in semi-arid IGPs [84]. Additionally, a significant factor influencing the weekly fluctuation in ET a was reported as net solar radiation variation (r ≥ 0.87) in IGPs by [7].…”

“…Agrometeorological indices showed that temperature affects crop growth and yield. These indices also varied due to different transplanting dates and varieties [84]. In the present study, various agrometeorological indices for the rice cultivar Swarna Shreya had been calculated and their variations showed the pattern of biomass accumulation at different phenological stages, which ultimately affect crop productivity.…”

On-farm Assessment of Medium Duration Rice (Oryza sativa L.) Cultivars for Growth, Yield, Economics and Stress Tolerance

“…Similar trends had observed in photo-thermal unit (PTU) during the phonological stages for the cultivars indicating maximum PTU (32322.81) in Hiranmayee followed by Surendra (31792.17) and MTU 1001(31659.51). Jagtap et al (2018) also found the similar results in different cultivars of rice.…”

Integrated Nitrogen Management Influences the Yield Performance of Rice under Different Methods of Cultivation

“…These results are in close conformity with the earlier findings of (Choudhary et al, 2013;Gupta et al, 2011;Jat et al, 2015;Jat et al, 2016;Vishwakarma et al, 2016). Production potential, vigourness (genetic traits) and physiological efficiency of hybrid are responsible to differentiate it from other hybrids in their growth habits, rooting pattern, input utilization and resistance development against insect pest and diseases that ascribed to harvest optimum yield under a definite set of agroclimatic condition (Shukla et al, 2015;Jagtap et al, 2018). The application of 50% RND+50% N through FYM+Azospirillum brought about marked improvement in filled grains panicle -1 and grain yield of rice and also recorded significantly lowest unfilled spikelet panicle -1 and sterility percent over remaining treatments.…”