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Study of Yield and Yield Attributing Characters of Some Modern Aus Varieties

Abdur Rakib*
Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh-2201, Bangladesh

M.S.R.Khanom
Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh-2201, Bangladesh

K.T. Akter
Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh-2201, Bangladesh

S. Khatun
Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh-2201, Bangladesh

M. Kamruzzaman
Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh-2201, Bangladesh

Abstract/ Executive Summary:

Yield and yield attributing characters of four modern Aus varieties were studied to assess the most suitable variety for Aus season in respect of yield and duration. Among four varieties Binadhan-19 and Binadhan-21 were BINA released Aus varieties and BRRI dhan48 and BRRI dhan85 were BRRI released Aus varieties. The study was carried out in the experiment field of Sub-station under Bangladesh Institute of Nuclear Agriculture, Shasangacha, Cumilla during April, 2019 to August, 2019. The experiment was laid out in randomized complete block design with three replications. Data demonstrated that maximum yield (5.14 t/ha) was obtained in BRRI dhan85 which was statistically similar to BRRI dhan48 (4.70 t/ha) and dissimilar to others. Binadhan-19 gave the moderate yield (4.38 t/ha) which was statistically identical to second highest variety BRRI dhan48 and the lowest yield were found in Binadhan-21 (3.88 t/ha). Binadhan-21 had lowest duration (104 day) followed by Binadhan-19 (107 day). Maximum duration was found in BRRI dhan85 (115 day) and it was similar to BRRI dhan48 (112 day).

Keywords: Aus, Modern varieties, Yield

Location: Sub-station under Bangladesh Institute of Nuclear Agriculture, Shasangacha, Cumilla

Start Date: 00-04-2019

End Date: 00-08-2019

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

Present experiment was conducted to assess the suitable variety in respect of premium quality, short duration and yield.

Methodology:

This experiment was conducted at the farmers’ field at Haratuli village of Sadar dakshin upazilla under Cumilla district during the period of April 2019 to August 2019 to detect the most suitable Aus variety with higher yield within short duration. This field experiment having one factor and it laid out in Randomized Complete Block Design (RCBD) with three replications. The experiment consists of two BRRI released promising Aus varieties viz. BRRI dhan48 and BRRI dhan85 and two BINA released latest Aus varieties. Distance between two replications was 1m and 0.5 m between two plots. The size of each unit plot was 5m 4m (20m² ). The total area of the experiment was 324m² and number of plot was 12. Seedling produced for transplanting this experiment in ideal seed bed sowing after germination on 11st April, 2019. Single seedling was transplanted per hill maintain 20 cm distance from row to row and 15 cm distance from plant to plant on 2nd may, 2019. Nitrogen, Phosphorus, Potassium, Zinc and Sulphur are used as Urea, TSP, MoP, Zinc Sulphate and Gypsum. The Doses were 148 kg/ha, 51.87 kg/ha, 70 kg /ha, 6 kg/ha and 35 kg/ha respectively. The total TSP, MoP, Gypsum were applied as basal dose. Half of the Urea was applied after 7 days of transplanting. The rest of the urea was applied at top dress at 30 days after transplanting. To control soil pest Vitafuran 5g was applied @10 kg/ha. To control pre-emergence weed Rifit 500 EC was applied @1L/ha. Mipcin 75 WP was applied @1.3 kg/ha to control Green plant hopper infestation. Virtako 40 WG was applied to control yellow stem borer infestation @75g/ha. To control Blast and sheath blight infection Trooper 75 WP and Knowin 50WP were applied @400g/ha and 1kg/ha respectively. Three hand weeding were done at 10, 25 and 40 days after transplanting to control weed infestation. Irrigation was done when necessary. Data were recorded on the plant height (cm), No. of tillers/hill, No. of effective tillers/hill, No. of grains/panicle, No. filled grains/ panicle, No. of Unfilled grains/panicle, Panicle length (cm), Duration and Yield (t/ha). All the data were compiled and analyzed statistically by STAR program (A IRRI developed program).

Source of Information: International Journal of Applied Research 5:141-144 Online release 07 October 2019

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The overall yield of these four varieties was satisfactory. The yield of BRRI dhan85 was highest but it required 8 days more to complete its lifecycle than Binadhan-19. It was medium grain quality rice and more 1000 seed weight. Now a day most of the farmer likes premium quality rice due its high market price and eating quality. In this view Binadhan-19 is more demandable than BRRI dhan85. Although Binadhan-21 was shortest duration and premium quality but its yield is very low. On the other hand, Yield, duration and 1000 seed weight of BRRI dhan48 were more than Binadhan-19 but yield of BRRI dhan48 was significantly akin to Binadhan-19. However, based on high yield, short duration and premium quality Binadhan-19 may be consider satisfactorily for cultivation in Aus season followed by BRRI dhan85

Knowledge Management: Journal