EFFECTS OF ORGANIC AND INORGANIC FERTILIZERS ON THE GROWTH AND YIELD OF WHEAT (BARI Gom 26)

Abstract

An experiment was conducted at the Soil Science research field of Hajee Mohammad Danesh Science and Technology University, Dinajpur during the period of December 2016 to April 2017 in order to evaluate the effects of organic and inorganic fertilizers on the growth and yield of wheat (BARI Gom 26). The experiment was laid out in a Randomized Complete Block Design (RCBD) having eight treatments with three replications. The treatments were as follows; T0= Control, T1= 100% recommended doses of inorganic fertilizers (RDIF), T2= 100% recommended doses of organic fertilizers (RDOF), T3= 50% RDIF+50% RDOF, T4= 67% RDIF+33% RDOF, T5= 33% RDIF+67% RDOF, T6= 25% RDIF+75% RDOF, T7= 75% RDIF+25% RDOF. The experimental soil belongs to the Old Himalayan Piedmont Plain (AEZ-1). The soil was sandy loam in texture having pH 5.13, organic matter content 1.64%, total N 0.07%, available P 55.59 ppm, exchangeable K 0.21 meq 100 g-1 soil and available S 19.75 ppm. Application of organic and inorganic fertilizers resulted in a considerable influence on the properties of the post-harvest soils such as pH, organic matter content, total N, available P, exchangeable K and available S. The results revealed that the yield components such as, plant height, spike length, no. of tillers hill-1, spikelets spike-1 , grains spike-1, 1000-grains weight of wheat (BARI Gom 26) responded significantly due to application of organic and inorganic fertilizers. The highest plant height (91cm) was observed in T7 treatment and the lowest (48.73 cm) was found in the T0 (control). The maximum number of tillers hill-1 (4.66) was recorded in the treatment T7 and the lowest (3.04) was observed from the controlled treatment T0. The highest spike length (9.46 cm), highest spikelets spike-1 (15.89), maximum number of grains spike-1 (51.63), highest 1000-grains weight (35.93g) was noticed at T7 treatment and the lowest performance of those treatments was noticed at T0 (control). Application of organic and inorganic fertilizers significantly increased the yield component of grain and straw of wheat (BARI Gom 26). The treatment T7 receiving 75% inorganic fertilizers with 25% organic fertilizers showed the highest grain yield (4.75 t ha-1) and straw yield (5.56 t ha-1).The lowest grain yield (2.34 t ha-1) and straw yield (2.71 t ha-1) were found in the treatment T0 (control). The findings of the study showed that the performance of the treatment T7 was the best among all treatments. Therefore, 75% inorganic fertilizer and 25% organic fertilizer is recommended for wheat cultivation.