Effects of Transplanting Windows on Growth, Yield and Economics of Different Varieties on Summer Paddy

Aims: The present study determines the effects of transplanting windows on growth, yield and economics of different varieties on summer paddy Place and Duration of Study: An experiment was carried out during summer, 2024 at Agriculture Research Station Farm, Vadgaon Maval, Tal. Maval, Dist. Pune. Methodology: The field experiment was laid out in split plot design with three replications. There were sixteen treatment combinations comprising of four transplanting windows viz., 1, 3, 5 and 7 MW and four varieties viz., VDN-3-51-18 (Indrayani), VDN-99-29 (Phule Samruddhi), IET-13549 (Bhogawati) and VDN-1832 (Phule Kolam). The gross and net plot size were 4.2 m x 3.0 m and 3.60 m x 2.40 m, respectively. The periodical observations on growth, micrometeorological parameters and yield contributing characters were recorded to assess the treatment effects. Results : Transplanting of summer paddy during 3 MW improved all the growth components viz., plant height (96.2 cm), number of tillers per plant (20.2) with yield component viz., length of spike (24.1 cm), number of spikes per plant(19.3), number of grains per spike(209) , grain weight per spike (4.28g), test weight (21.6g), grain yield (55.27 qha-1) and straw yield (62.46 qha-1) which was at par with 5 MW and superior over 1 and 7 MW respectively. Among the four different varieties of paddy, VDN-99-29 (Phule Samruddhi) recorded significantly higher growth parameters viz., plant height at harvest (97.5 cm), number of tillers per plant at harvest (20.4) with yield attributing characters viz., length of spike (24.5 cm), number of spikes per plant (19.6), number of grains per spike (212), grain weight per spike (4.67 g), test weight (23.0 g), grain yield (56.02 q ha-1) and straw yield (62.63 q ha-1). Conclusion: The findings highlight the importance of selecting both an appropriate transplanting window and a suitable variety for sustainable summer paddy cultivation. Considering growth , yield, and adabtibility, the variety VDN -99-29 (Phule Samruddhi) emerged as the most suitable for the experimental conditions. Therefore, under the agro climatic conditions of Vadgaon mawal , it is recommended to adopt summer paddy variety Phule Samruddhi with transplanting scheduled in either the 3 or 5 MW to maximize productivity and stable yields.