EFFECT OF FORMS OF NITROGENOUS FERTILIZER AND NUMBER OF SEEDLING PER HILL ON THE YIELD OF BORO RICE CV. BRRI dhan 29

Abstract

An experiment was carried out on BRRI dhan 29 at the experimental field of Sher-c- l3angla Agricultural University. Dhaka during November'07 to April'08 to evaluate the elIèct of three forms of N-fertilizer viz. pilled urea. urea super granules (USG) and foliar spray of urea and four levels of seedling/hill viz. 1. 2, 4 and 6. Forms of N- fertilizer were assigned in main plot and number of seedling/hill in the sub plots in a split-plot design with 3 replications .. EtTect of forms of nitrogen fertilizer and number of seedling/hill was signilicant in respect of all the plant and yield attributing characters like plant height. effective tiller/hill, ineffective tiller/hill. grain/panicle. sterile grain/paniele and thousand seed weight. Urea super granules (USG) have significantly highest grain yield (6.4 t/ha) lowest grain (5.1 c/ha) was found in the where as lowest straw yield (5.8 tAm) and bmw application of urca.Signilicantly highest grain yield (6.6 t/ha) was obtained from single seedling/hill followed by two seedlings/hill (6.4 t/ha). The highest straw yield (7.5 c/ha) was obtained from six seedlings/hill and the lowest (6.7 c/ha) was found from single seedling/hill. The interaction effect of forms of N-fertilizer and number of seedling/hill differed significantly for all the yield attributes, although the highest grain yield (7.0 c/ha) was produced from the treatment combination of Urea super granule (USG) seedling/hill followed by urea super granules x urea x single seedling/hill (6.83 c/ha) interactions. vi x 2 seedling/hill (6.93 c/ha) and prilled