EFFECTS OF DIFFERENT RETRANSPLANTING DATES AND SEEDLING NUMBERS PER HILL ON GROWTH, YIELD AND NUTRIENT CONTENT OF LATE AMAN RICE (cv. Binasall)

Abstract

An experiment was conducted at the experimental field of the farm of Sher-e- Bangla Agricultural University during the period from August to December. 2011 to study the effect of different seedling number hill' on the growth, yield and nutrient content of re-transplanted Aman rice (Binasail) using RCBD (Randomized Completely Block Design) with three repiications. During the experiment, three different number of seedling hill' (3 seedlings hill'. 4 seedlings hill' and 5 seedlings hill') and tbur transplanting and re-transplanting dates (transplanting at 16 September, re-transplanting at 23 September, re-transplanting at 30 September and re-transplanting at 07 October) were used as treatments. The highest number of total tillers hill'. effective tillers hill'. non-effective tillers hill'. spikelet paniele1, tilled grains panicle* unfilled grains panicle' , maximum 1000-ain weight and the longest panicle was found from 4 seedlings hilt' treatment while plant height was highest in both 4 seedlings hill' and 5 seedlings bill'. The highest N and P content in straw were observed from 4 seedlings hilt' but K content was highest in 3 seedlings hill' treatment. In case ol planting dates, re-transplanting at 23 September showed highest results for most of the growth and yield parameters while re-transplanting at 07 October gave the lowest. But non-effective tillers hilt' and unfilled grains panicl&' were highest in retransplanting at 07 October and lowest in re-transplanting at 23 September and transplanting at 16 September. For N. P and K contents in straw, the highest results were recorded in transplanting at 16 September tblLowed by retransplanting at 23 September while re-transplanting at 07 October gave the lowest. Due to the interaction effects of two factors. 4 seedlings hill' and retransplanting at 23 September gave better results followed by 3 seedlings hill' and re-transplanting at 23 September and 3 seedlings hill' and transplanting at 16 September for most of the parameters while poorest performances were observed for 5 seedlings hill1 t reatment and re-transplanting at 07 October and 3 seedlings hilt' and re-transplanting at 07 October.