EFFECT OF INORGANIC FERTILIZERS AND BIOCHAR FOR THE GROWTH AND YIELD OF RICE (BRRI dhan 29

Abstract

A field experiment was carried out at research field, Hajee Mohammad Danesh Science and Technology University, Dinajpur, during the period from December, 2016 to April, 2017 to assess the effect of inorganic fertilizers and biochar for the growth and yields of rice (BRRI dhan 29). The experiment was laid with five (5) treatments i.e. T1 (full dosses of N, P, K and S), T2 (Biochar 10 tha-1 ), T3 (Biochar 10 tha-1 + ½ N, P, K and S of the recommended doses), T4 (Biochar 7.5 tha-1 + ½ N, P, K and S of the recommended doses) and T5 (Biochar 5 tha-1 + ½ N, P, K and S of the recommended doses) having three replications in RCBD. The maximum plant height was in treatments T1 (103.0 cm) which was statistically similar to the treatment T3 (99.93 cm) and the lowest plant height was observed in treatment T5 (90.80 cm). The number of tillers hill-1 was highest (26.10) in the treatment T1 which was statistically similar to the treatment T3(25.17) and the least datum of tillers hill-1 was produced in the treatment T2 (18.43). The highest panicle length (24.89 cm) was found in the treatment T3 which was statistically similar to the treatment T1 (24.75 cm) and the lowest panicle length (19.46 cm) was found in the treatment T2. The highest number of spikelet hill-1 (14.30) was found in the treatment T3 which was statistically similar to the treatment T1 (13.87). The lowest number of spikelet hill-1 (10.80) was found in the treatment T2. The highest number of grains panicle-1 (195.4) was found in the treatment T3 which was statistically similar to the treatment T1 (192.5) and the lowest number of grains panicle-1 (160.9) was found in the treatment T4. The highest 1000-grain weight (25.53g) was found in the treatment which was statistically similar to the treatment T1 (24.17g) and the lowest number of 1000-grain weight (21.17) was found in the treatment T2. The treatment T1 recorded the highest grain yield (7.463 t ha-1 ) which was statistically similar to the treatments T3 (7.420 t ha-1 ) and the lowest grain yield (4.223 t ha-1 ) was recorded in the treatment T2. The treatment T1 recorded the highest straw yield (9.923 t ha-1 ) which was statistically similar to the treatments T3 (9.867 t ha-1 ) and the lowest straw yield (5.61tha-1 ) was recorded in the treatment T2. The highest biological yield (17.287 tha-1 ) was measured in the treatment T3 and the lowest biological yield was recorded in the treatment T2 (9.84t ha-1 ). From the above discussion the highest yield was in the treatment T1 with the application of full dosses of N, P, K and S and the results of yield and yield contributing attributes were statistically significant and similar in the treatment T3 with the application of biochar 10 tha -1 + ½ N, P, K and S of the recommended doses. So the application of biochar 10 tha-1 + ½ N, P, K and S should be recommended to use in the farmers field which was saved 50% of inorganic fertilizers as compared to the other treatments.