PERFORMANCE EVALUATION OF HYBRIDS RICE AT DIFFERENT LOCATIONS IN RANGPUR REGION

Abstract

An experiment was conducted to evaluate the performance of hybrids rice at different locations in Rangpur region, during December 2015 to May 2016.The aim of the study was to compare the growth, yield and yield contributing characteristics of hybrid rice with location specific as well as farmer‟s opinion. The experiment consisted of two factors; Factor A: four hybrid rice (V1: BRRI hybrid dhan2; V2: ACI-2, V3: SL-8 and V4: Krishibid hybrid-1) and Factor B: four locations (L1: Nilphamari, L2: Lalmonirhat, L3: Rangpur and L4: Kurigram). The experiment was laid out in a Randomized Completely Block Design (RCBD) with three replications. Data was collected at vegetative and reproductive stages by measuring several yield contribution characteristics (Plant height, Number of effective tiller hill-1 , Panicle length, Filled grain panicle-1 , 1000–grain weight, grain yield) parameters. To ensure good growth of the crop common cultural practices were adopted in each plot. Growth characters yield and yield attributes were significantly different among the studied hybrid in different locations. In the study, all hybrid rice showed better performance in yield related characters viz, effective tillers hill-1 , panicle length, 1000-grain weight, biological yield, harvest index (HI) over the same hybrid. Among the four hybrid rice, Krishibid hybrid-1 was the most productive hybrid than that those of other hybrid rice. Higher grain yield of the hybrids also related with higher dry matter production and partitioning. However, Krishibid hybrid-1 showed the best performance closely followed by ACI-2. Among the locations, Krishibid hybrid-1 performed well in Kurigram. Yield components, effective tillers hill-1 and 1000 grain weight mainly contributed to the higher grain yield of hybrid varieties. These results suggested that the hybrid rice Krishibid hybrid-1 in Kurigram was relatively best hybrid than others hybrids in respect of morphological adaptation associated with yield attributes and grain yield. PVS (Participatory Variety Selection) function was also conducted in Gangachara, Rangpur, Sadar, Lalmonirhat and Durgapur, Kurigram. BRRI hybrid dhan3 ranked 1 st at Gangachara, Rangpur ACI-2 ranked 1 st at Sadar, Lalmonirhat and Krishibid hybrid-l ranked 1 st at Durgapur, Kurigram.