EFFECT OF NITROGEN AND POULTRY MANURE ON THE GROWTH AND YIELD CONTRIBUTING CHARACTERS OF BORO RICE (BRRI Dhan 28)

Abstract

An experiment was conducted at the research field in Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur, during the Boro season of 2017 to evaluate the effects of poultry manure (PM) and N fertilizer on the growth and yield of BRRI dhan 28. The experiment was laid out in a Randomized Complete Block Design (RCBD) with six treatments and four replications. The treatments were T1 ( Control), T2 ( Urea @ 0 kg ha-1 + PM @ 8 t ha-1), T3 (Urea @ 75 kg ha-1 + PM @ 6 t ha-1), T4 (Urea @ 150 kgha-1 + PM @ 4 t ha-1), T5 ( Urea @ 225 kg ha-1 + PM @ 2 t ha-1), T6 ( Urea @ 300 kg ha-1 + PM @ 0 t ha-1). Total amount of P, K and S fertilizers were applied as basal dose @ 90, 120 and 45 kg ha-1, respectively during final land preparation but N from urea (300 kg ha-1) was applied as per treatments in there equal splits. Application of PM and N fertilizer significantly influenced the growth and yield contributing characters of BRRI dhan 28. The results of the study also indicated that most of the yield and yield contributing characters such as number of effectives tillers hill-1 (16.73), panicle length (23.98 cm), 1000 grains weight (26.04 gm), grain yield (5.40 t ha-1) and straw yield (6.44 t ha-1) were the maximum in treatment T3 (Urea @ 75 kg ha-1 + PM @ 6 t ha-1) and the highest values of other yield and yield contributing characters such as plant height (89.68 cm), number of leaf hill-1 (80.71), number of tillers hill-1 (12.50) and filled grains panicle-1 (125.2) were recorded in T5, T2, T2 and T2, respectively. The lowest values of all the yield and yield contributing characters were found in T1 (control). Soil pH, organic matter, total N, available P, exchangeable K and available S content in post-harvest soil were also influenced by the application of poultry manure and N fertilizer. The overall results indicate that application of N fertilizer in T3 as urea @ 75 kg ha-1 in combination with 6 t PM ha-1 can produce maximum yield but statistically similar with other combinations. However, further investigation is necessary to make concrete recommendation. The findings of the study suggest that integrated use of PM and N fertilizer is an important for sustainable production of rice.