EFFECTS OF VERMICOMPOST ON GROWTH AND YIELDS IN RICE FOR MINIMIZING THE USE OF INORGANIC FERTILIZERS

Abstract

The field experiment was carried out at research central field, Hajee Mohammad Danesh Science Technology University, Dinajpur. During the period from December, 2016 to April, 2017 to evaluate the effect of vermicompost for the growth and yields of rice (BRRI dhan 29). The main aim of the study was to assist and compare the vermicompost and inorganic fertilizer with recommended doses for growth and yield of rice to minimize the use of synthesis fertilizer. The experiment field was four replication and five treatments laid out in a Randomized Complete Block Design (RCBD). The treatments were T1 (full doses of N, P, K and S), T2 (Vermicompost 5 t ha-1 ), T3 (Vercompost 2.5 t ha-1 ), T4 (vermicompost 2.5 t ha-1 +50% N, P, K and S of recommended doses), T5 (Vermicompost 2.5 ton/ ha-1 +33.3% N, P, K and S of recommended doses). Application of vermicompost and inorganic fertilizer significantly increased the yield components grain and straw yield of rice. Application of vermicompost resulted higher yield parameters such as plant height (95 cm), grains panicle-1 (175), and spikelet panicle-1 (14), grain yield (7.4 t ha-1 ), biological yield (11.3 t ha-1 ) these results were recorded in T2 and T1.AvailableN, P, K, and S content in post harvest soil was influenced by application of vermicompost and inorganic fertilizer. From the above discussion the highest yield was in T2 with the application of vermicompost (5 t ha-1 ) which was statistically similar to the T1 with the application of full doses of N, P K and S, so that the application of vermicompost (5 t ha-1 ) is a similar to the full doses of N, P, K and S and should be recommended to the farmers to use vermicompost which was cheap and available to the rural area and saved the cost.