Performance of rice varieties with types of seedling under late planted lowland situation

Abstract

A field experiment was conducted under late planted lowland situations during wet seasons of 2012 and 2013 at Jorhat to evaluate the performance of 3 late planted sali (kharif) rice varieties (Prafulla, Gitesh and Monoharsali) under 3 planting dates (10, 20 and 30 September) with 2 types of seedling (Nursery seedling and double planted seedling). Results revealed that delaying planting dates from 10 September to 30 September significantly and consistently reduced both grain and straw yields along with all the yield attributing characters during both the years. On an average, the grain and straw yield reduction being 58.3 and 19.3 per cent, respectively. Among the varieties tested, rice variety 'Monoharsali' outyielded the variety, 'Prafulla' and 'Gitesh'. Double planted seedlings of 60 days (30 + 30 days) old recorded significantly higher yields and all the yield attributes over the use of 60 days nursery seedling. The highest net return and benefit-cost ratio was recorded when rice variety, 'Monoharsali' was transplanted on 10 September using 60 days (30 + 30 days) double planted seedling.

Effect of staggered planting and crop establishment methods on scented organic rainfed rice

“…Similar was the trend in net returns and benefit-cost ratio. Reduction in yield due to delay in planting was also reported by Changmai and Thakuria (2017), Singh and Thakur (1991), Thakur et al (1996) and Thakuria et al (2017).…”

Double transplanting of rice as a contingency approach to escape climate change impacts

“…In Assam, primary, secondary nurseries and main field were locally known as Bechan bari, Bolon bari and Dhan bari, respectively [14]. As compared to direct transplanting to main field, a greater number of seedlings (generally, 6-12/hill) are maintained at less spacing of 8-12 cm × 8-12 cm covering 65-70 hills/m 2 land area in secondary nursery [2,21]. In each nursery, nutrient, water managements and plant protection strategies were ensured properly to nurture the seedlings well.…”

“…They noticed early maturity (10 days earlier) of crop, less weed, pest and disease infestations, greater yield, high labour cost, less seed and pesticide costs and profitability under DT method as Naicha method. Earlier, an attempt to standardise the date of transplanting, spacing and seedlings/hill in DT method was made by Thakuria et al [2], in which maximum growth and yield attributes were observed under transplanting of 3 seedlings/hill on 10th September at spacing of 20 cm × 10 cm (Table 6). As a consequence, grain yield, straw yield, harvest index, net return and B:C were found highest under the same in DT method (Table 6).…”

“…Yield and economics of double transplanted rice grown under various dates of transplanting, spacing and seedlings/hill. Source:[2] Treatments Plant height (cm) Panicles/m 2…”