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Role of Chitosan Powder on the Production of Quality Rice Seedlings of BRRI Dhan29

Mohammad Issak
Department of Soil Science, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

Amena Sultana
Senior Scientific Officer, Agronomy Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

Abstract/ Executive Summary:

Role of chitosan powder on the production of quality rice seedlings of BRRI dhan29 was examined in the field of Sher-e-Bangla Agricultural University, Dhaka. There were six treatments and three replications in the experiment. The treatments were as follows: T₁ = 100 g chitosan (CHT) powder/m², T₂ = 200 g CHT powder/m², T₃ = 300 g CHT powder/m², T₄ = 400 g CHT powder/m², T₅ = 500 g CHT powder/m², T₆ = 0 g CHT powder/m². A significant variation was observed in the seedlings height, biomass production, dry matter production and chemical properties of the seedbed soils due to the application of chitosan powder in the seedbed. The maximum seedlings height, fresh weight, oven dry weight was observed in the treatment T₄ and the minimum level in the treatment T₆ (control). On the other hand, the maximum level of organic carbon, organic matter and soil pH was recorded in the treatment T5 and the minimum level in the treatment T₆ (control). Chitosan powder increased the level of organic matter in a dose dependent manner. Quality of the Boro rice seedlings were improved due to the application of chitosan powder and the seedlings strength were increased in a dose dependent manner. All the treatments were produced good quality Boro rice seedlings having more chlorophyll level and seedlings strength than the control treatments. Our results indicated that treatment T₄shows the superior results than other treatments. These results could be due some nature of soil alkalization and other some macro-micro nutritional supplementation which may be improving the strength of the seedlings. Taken together, chitosan powder could play a significant role in the quality Boro rice seedling production that might be help to increase the grain yield.

Keywords: Chitosan powder, BRRI dhan29, Boro rice, Seedling, Production

Location: In the field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Start Date: 00-12-2015

End Date: 00-01-2016

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To determine the effect of chitosan powder on quality seedling production of BRRI dhan29.

Methodology:

The experiment was conducted at the research field of Sher-e-Bangla Agricultural University, Dhaka-1207 during the period from December 2015 to January 2016. The soil of the experimental plots belongs to the Agro Ecological Zone, Madhupur Tract (AEZ-28).The farm belongs to the general soil type of Deep Red Brown Terrace soils under Tejgaon soil series. Initial Soil pH was 7.2 and had organic carbon 0.63% and organic matter content is 1.09%. BRRI dhan29 were used as the test crop. The Chitosan powder was prepared by milling the byproducts and sieving them using a sieve having 2 mm in diameter. Finally up to 2 mm size powder were used in the experiment. The prepared chitosan was used in the experiment during the final land preparation. The experiment was laid out in a Randomized Complete Block Design (factorial). Each treatment was replicated thrice. The size of a unit plot was 1 m × 1 m. Total plots in the experimental field were 18. Common procedure was followed in rising of seedlings in the nursery bed. The nursery bed was prepared by puddling with repeated ploughing followed by laddering. Weeds were removed and irrigation was gently provided to the bed as and when needed. No fertilizer was used in the seedbed. Physical and chemical properties of soil were analyzed in the Department of Soil Science, Sher-e- Bangla Agricultural University, Dhaka-1207. The properties studied included texture, soil pH, soil organic carbon and soil organic matter. The soil was analyzed following standard methods. Soil pH was measured with the help of a glass electrode pH meter using soil suspension of 1:2.5 as described by Jackson (1962). Organic carbon in soil was determined by wet oxidation method (Walkley and Black, 1934). All the data were recorded and analyzed by using standard windows based software statistix 10 trial (https://statistix informer.com/10.0/).

Source of Information: Res. Agric. Livest. Fish. Vol. 4, No. 3, December 2017: 141-149.

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Achievement/Findings:

Role of chitosan powder on the production of quality rice seedlings of BRRI dhan29 was examined in the field of Sher-e-Bangla Agricultural University, Dhaka. There were six treatments and three replications in the experiment. The treatments were as follows: T₁ = 100 g chitosan (CHT) powder/m², T₂ = 200 g CHT powder/m2, T₃ = 300 g CHT powder/m², T₄ = 400 g CHT powder/m², T₅ = 500 g CHT powder/m², T₆ = 0 g CHT powder/m². A significant variation was observed in the seedlings height, biomass production, dry matter production and chemical properties of the seedbed soils due to the application of chitosan powder in the seedbed. The maximum seedlings height, fresh weight, oven dry weight was observed in the treatment T₄and the minimum level in the treatment T₆ (control). On the other hand, the maximum level of organic carbon, organic matter and soil pH was recorded in the treatment T₅ and the minimum level in the treatment T₆ (control). Chitosan powder increased the level of organic matter in a dose dependent manner. Quality of the Boro rice seedlings were improved due to the application of chitosan powder and the seedlings strength were increased in a dose dependent manner. All the treatments were produced good quality Boro rice seedlings having more chlorophyll level and seedlings strength than the control treatments. Our results indicated that treatment T₄ shows the superior results than other treatments. These results could be due some nature of soil alkalization and other some macro-micro nutritional supplementation which may be improving the strength of the seedlings. Taken together, chitosan powder could play a significant role in the quality Boro rice seedling production that might be help to increase the grain yield.

Knowledge Management: Journal