EFFECT OF FERTILIZER, MANURE AND LIME ON GROWTH AND YIELD OF BORO RICE IN ACIDIC RED SOIL

Abstract

An experiment was conducted to evaluate the yield and yield potentialities of Boro rice along with change of nutrients in rice grain as influenced by acidic red soil and different types of fertilizers in net house of Soil Science Department, SAU, Dhaka during the Boro season of 2013–14. Two acidic red soils of Bhatgaon (S 1 ) and Goari (S 2 ) along with nine different fertilizer treatments viz. T 0 : Control, T 1 : N 150 P 30 K 70 S 20 Zn 3 (Recommended dose of chemical fertilizer), T 2 : N 150 P 30 K 70 S 20 Zn 3 (RDCF) + 1.0 g lime kg –1 soil, T 3 : 50% NPKS + 5 ton cowdung ha –1 , T 4 : 50% NPKS + 5 ton cowdung ha –1 + 1.0 g lime kg –1 soil, T 5 : 50% NPKS + 5 ton compost ha –1 , T 6 : 50% NPKS + 5 ton compost ha –1 + 1.0 g lime kg : 50% NPKS + 3.5 ton poultry manure ha –1 and T 8 : 50% NPKS + 3.5 ton poultry manure ha –1 + 1.0 g lime kg soil were used for the present study. The pore–water samples were collected during rice growing period. The pore–water P concentration decreased with increasing days after transplantation of rice and higher levels of pore–water P concentrations were found in the inorganic plus manure and lime applied fertilizer treatments (0.400 ppm). The pore–water P concentrations and other yield attributes were positive and strongly correlated with the grain and straw yields of rice. The Boro rice yields were significantly affected by soil and fertilizer treatments. The soil of Bhatgaon had more efficient to produced more effective tillers (22.11) along with highest yield of grain (35.15 g pot –1 ) and straw (54.37 g pot –1 ) than the soil of Goari. N, P, K and S content in Boro rice grain had also higher in Bhatgoan (1.316, 0.079, 0.524 and 0.119%, respectively) than Goari. Similarly, 50% organic manure along with organic and lime application obtained the tallest plant (70.42 cm), longest panicle (22.31 cm), more filled grains panicle –1 –1 (74.83 cm) and greater production of Boro rice (41.67 g pot ) compared to 100% recommended dose of NPKSZn. N, P, K and S content in rice grain were also

–1 –1 soil, T 7 statistically significant due to different fertilizer treatments while 50% NPKS + 3.5 ton poultry manure ha –1 + 1.0 g lime kg soil showed significant and higher levels of NPKS (1.902, 0.070, 0.538 and 0.169%, respectively) than that of other treatments of the study. However, all the studied characters except productive tillers hill –1

were not statistically significant due to the effects of interaction but more tillers was obtained from the soil of Bhatgaon under 50% organic + poultry manure (10.67) while highest grain yield (49.00 g pot ) was produced from 50% inorganic + 5 ton organic cowdung. The soil of Bhatgoan treated by 50% NPKS along with organic and lime also more effective for getting the highest N, P and S content in Boro rice grain. Therefore, the farmer(s) of our country may apply organic manure and lime along with 50% NPKS for enhancing the production of boro rice in our country which may reduced 50% NPKS. Thus the farmers of our country can be economically benefited by the 50% reduced of chemical fertilizer. –1 –1