INFLUENCE OF CHITOSAN RAW MATERIALS POWDER ON YIELD PERFORMANCE OF BRRI dhan75

Abstract

A pot experiment was conducted under the net house at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh, during the period of July-November, 2020 to study on performance of a rice variety (BRRI dhan75) as influenced by chitosan raw materials. Fourteen (14) inches size plastic pots were used in the experiment having length (10.5 inches) and diameter (9.5 inches). The pots were filled with 10 kg SAU field moist soils having the texture silty clay loam soil. The experiment was laid in a Completely Randomized Design (CRD). The experiment was comprised of six (6) treatments i.e. T 1 = 0% chitosan raw materials, T 2 = 0.1% chitosan raw materials, T = 0.2% chitosan raw materials, T 4 = 0.3% chitosan raw materials, T = 0.4% chitosan raw materials and T 6 5 = 0.5% chitosan raw materials. There were forty eight (48) replications used in the experiment and the total number of experimental pots were two hundred eighty eight (6 x 48=288). The treatment materials was applied in the seedbed before sowing the sprouted seeds. Seedling characters like 100 seedling fresh weight, 100 seedling oven dry weight, seedling height and seedling strength were significantly increased in all the treatments used in the experiment. The maximum seedling strength was found in the T (3.9) where minimum seedling strength was observed in control treatment T 1 4 (2.7). The trend of the seedling strength was T 4 >T 5 >T 6 >T 2 >T 3 >T . Biomass production was increased at the maximum tillering (MT) stage. The increasing tendency of the seedling characters had profound effect on early tiller production, higher number of tiller production, fresh and dry matter production at maximum tillering stage resulting higher yield. The maximum effective tiller/hill production was found in T 1 (15.8) whereas the minimum effective tiller/hill was observed in control T 1 2 (14.2). The highest grain yield (40.11 g/hill) was found in T 2 and the lowest grain yield was found in the control T (34.33 g/hill). Taken together, the research findings indicated that chitosan raw materials significantly influenced the seedling strength and that was allow to influenced the maximum effective tiller production resulting higher grain yield. The results suggested that the chitosan raw materials could be an effective yield boosting tool for rice cultivation under Climate Smart Agriculture in Bangladesh. 1 3