PJB-2023-626
BIOCHAR IN CONJUNCTION WITH REDUCED DOSES OF MINERAL FERTILIZERS INCREASED YIELD ATTRIBUTES AND YIELD OF RICE (CV. BRRI DHAN29) IN OLD HIMALAYAN PIEDMONT PLAIN
Md. Rayhanul Hoque,
Abstract
Recently, biochar (BC) applied in optimized quantities has emerged as an effective organic amendment for improving the physico-chemical charcteristics of the soil along with boosting the yield attributes of cereals. A field experiment was conducted in the research field at Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur to assess the impactof BC applied in conjunction with reduced doses of recommended chemical fertilizers (RDF including N, P, K and S) on the growth and yield of rice (cv. BRRI dhan 29). It was comprised of five treatments viz.T1= Recommended doses of RDF, T2 = BC 10 t ha-1, T3 = BC 10 t ha-1 + half RDF, T4= Biochar 7.5 t ha-1 + half RDF RDF and T5 = BC 5 t ha-1 + half RDF. The experimental design was the regular arrangement ofRandomized Complete Block Design (RCBD) with four replications. The T1 treatment recorded the maximum plant height (103.0 cm) and the number of tillers hill-1 (26.10) which remained statistically similar to T3. Likewise, T3 outperformed rest of regimes by recording the highest values of panicle length (24.89 cm), grains number panicle-1 (195.40), filled grains number panicles-1 (191.10), and 1000 grains weight (25.53 g).Moreover, the same treatment recorded unmacthed grain yield (7.82 tha-1) and straw yield (8.76 t ha-1) which was statistically at par to T1 (7.46 and 8.72 t ha-1, respectively). Furthermore, T3 also remained superior as for as biological yield (16.58 t ha-1) of rice was concerned. The results of this study reveal that BC (10 t ha-1) application holf potential to reduce CF dose upto 50% with reduction in yield attributes and grain yield of rice. (cv. BRRI dhan29)
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