Papers

EFFECTS OF ORGANIC MANURES AND BIO-SLURRIES WITH CHEMICAL FERTILIZERS ON GROWTH AND YIELD OF RICE (cv. BRRI dhan28) (Pages : 36 - 42)

M.S. RHAMAN, M.G. KIBRIA, M. HOSSAIN AND M.A. HOQUE

The soil fertility of Bangladesh is decreasing every year at an alarming speed. Low organic matter content is one of the most important contributing factors for poor fertility status of soils. Organic manure and bio-slurry along with chemical fertilizer can successfully be used to improve the soil health and productivity. To evaluate the effect of organic manures and bio-slurries along with chemical fertilizers on growth and yield of rice production, an experiment was conducted at the farmers’ field of Fulbaria Upazilla, Mymensingh during the period of February to May 2015. The experiment was laid out following randomized complete block design (RCBD) where each treatment was replicated three times. There were eight treatment combinations viz. T0: Control (no fertilizer or manure), T1: Farmers’ practice, T2: 100% recommend fertilizer dose (RFD) of chemical fertilizers (NPKSZn), T3: 75% RFD (NPKSZn) + CD (5 t ha-1), T4: 75% RFD (NPKSZn) + CD slurry (5 t ha-1), T5: 75% RFD (NPKSZn) + PM (3 t ha-1), T6: 75% RFD (NPKSZn) + PM slurry (3 t ha-1), T7: 75% RFD (NPKSZn) + Compost (10 t ha-1). The rice crop cv. BRRI dhan28 was used as a test crop. Growth and yield of BRRI dhan28 were very low in the control treatment where no manures or fertilizers were applied in the experimental plots. Application of organic manures or bio-slurries with chemical fertilizers significantly influenced growth and yield components of rice viz. plant height, effective tillers, panicle length and grains per panicle. Grain and straw yields of rice significantly increased due to application of manures or bio-slurries with chemical fertilizers. Nutrient (NPKS) uptake by crop was also significantly influenced by application of manures or bio-slurries with chemical fertilizers. Therefore, results suggest that combined application of manure or bio-slurry with chemical fertilizers might improve soil fertility, thereby increasing yield of rice.Download


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