Papers

EFFECT OF INTEGRATED NUTRIENT MANAGEMENT ON THE YIELD PERFORMANCE OF INBRED AND HYBRID RICE (Pages : 10 - 18)

M.L. MIA, M. BEGUM, I.J. RIZA, M.H. KABIR, F.A. NESHE, S. MONIRA, F. ZAMAN AND M.S. ISLAM

In addition to fulfilling the nutrient turnover in the soil-plant systems, it has been discovered that the integrated use of organic and inorganic fertilizers has potential for attaining sustainable crop yield over the long term under modern intensive cropping. A field trial was conducted to evaluate the effect of integrated nutrient management on the yield performance of inbred and hybrid rice. In this experiment two boro rice varieties viz., BRRI dhan58 (V1), Hybrid SL-8H (V2) and six nutrient managements viz control (no application of manures and fertilizer) (T1), recommended dose of inorganic fertilizer for the varieties (T2), vermicompost (3 t ha-1) (T3), cowdung (5 t ha-1) (T4), 50% less then recommended dose of inorganic fertilizer + vermicompost (1.5 t ha-1) (T5), 50% less then recommended dose of inorganic fertilizer + cowdung (2.5 t ha-1) (T6) were used. The experiment revealed that the longest plant height (77.09 cm), the highest number of total tillers hill-1 (15.90), number of effective tillers hill-1 (13.01), longest panicle length (22.27 cm), highest number of grains panicle-1 (134.43), 1000-grain weight (21.56), grain yield (7.72 t ha-1), straw yield (8.24 t ha-1), were found in hybrid SL-8H. Different nutrient managements also exerted significant influences on the yield and yield contributing characters of boro rice. Total number of tillers hill-1 (16.14), number of effective tillers hill-1 (14.73), number of grains panicle-1 (140.65), 1000-grain weight (23.35 g), grain yield (7.95 t ha-1), straw yield (8.9 t ha-1), and harvest index (47.39%) were found highest when 50% less then recommended dose of inorganic fertilizer + vermicompost (1.5 t ha-1) was applied. In case of interaction, the highest total number of tillers hill-1 (16.00), number of grains panicle-1 (141.14), 1000-grain weight (23.37 g), grain yield (8.40 t ha-1), straw yield (9.00 t ha-¹), harvest index (48.27%) were observed from Hybrid SL-8H with 50% less then recommended dose of inorganic fertilizer + vermicompost (1.5 t ha-1). From this result, it may be suggested that hybrid SL-8H could be cultivated with 50% less then recommended dose of inorganic fertilizer + vermicompost (1.5 t ha-1) as promising variety in boro season. So, it can be concluded that integrated nutrient (chemical fertilizer along with vermicompost) greatly influenced the yield contributing characters and yield of boro rice. Download


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