Effects of micronutrient and spacing on growth and chlorophyll content of rice

An experiment was carried out at the research field of the Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU).There were four nutrient treatments i.e., E1= NPKS recommended dose; E2= NPKS + Zn 5 Kg ha-1; E3= NPKS + Zn (5 Kg ha-1) + B (3 Kg ha-1) E4= NPKS + Zn (5 Kg ha-1) + B (3 Kg ha-1) + Mo (2 Kg ha-1) and three spacing S1= 20 x 10 cm2; S2 = 20 x 15 cm2 and S3 = 20 x 20 cm2.Micronutrient and spacing combined had a distinct positive response in crop growth attributes and chlorophyll content of rice. The tallest plant height (147.0 cm) and root length (13.50 cm) highest panicle length (22.56 cm) was attained in the treatment E2S3 but the maximum tillers per hill (14.95) and effective panicle per hill (14.17) were recorded in treatment E2S2. Physiological parameter i.e., LAI, CGR, RGR, NAR, total chlorophyll content of rice also responded significantly and the appropriate combination was E4S2treatment. Based on vegetative growth, physiological parameters and yield attributes the treatment combination E4S2 showed the best performance.