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Agronomic Performance and Farmers Perception on Zinc Enriched Rice BRRI Dhan62

MS Islam
Agriculture and Food Security Programme, BRAC, Mohakhali, Dhaka, Bangladesh

MJ Rahman
BRAC Agricultural Research and Development Centre, Gazipur, Bangladesh

MR Karim
BRAC Agricultural Research and Development Centre, Gazipur, Bangladesh

MA Kabir
Agriculture and Food Security Programme, BRAC, Mohakhali, Dhaka, Bangladesh

TA Qurashi
Agriculture and Food Security Programme, BRAC, Mohakhali, Dhaka, Bangladesh

Abstract/ Executive Summary:

Newly developed zinc enriched rice variety BRRI dhan62 was evaluated along with three other short maturing Transplanted Aman (wet season) rice varieties namely BINA dhan7, BRRI dhan33 and BRRI dhan56 at six different locations of Bangladesh during 2014. The study was laid out in randomized complete block design where each of the six dispersedly located locations act as replications. Agronomic performance, yield and yield components were determined at maturity. Economic performance and farmer's perceptions on the newly developed zinc enriched rice BRRI dhan62 were measured after harvest. Maximum genotypic difference was 12% in plant height, ranging from 122 to 109 cm among the tested varieties where BRRI dhan62 was the shortest and BRRI dhan56 was the tallest plant. The maximum grain yield was obtained from BINA dhan7 (5.70 ton h^-1) which was similar with BRRI dhan33 and minimum grain yield was obtained from BRRI dhan62 (4.78 ton h^-1) that was statistically similar with BRRI dhan56. BINA dhan7 gave maximum yield compared to other because of its maximum panicle number m^-2. The highest yielding variety BINA dhan7 produced highest productivity day^-1 (55 kg) which was statistically similar with BRRI dhan62 (51 kg) and lowest productivity day^-1 was found BRRI dhan56 (48 kg). BRRI dhan33 produced highest benefit cost ratio (2.33) compared to other variety and BRRI dhan62 and BRRI dhan56 produced lowest benefit cost ratio (2.16). The short maturing characteristic of BRRI dhan62 was most preferred attribute by the farmers rather than higher yield or higher zinc content.

Keywords: Zinc enriched rice, Agronomic performance, Farmers perception, Rice

Location: Kurigram, Bogra, Lalmonirhat

Start Date: 00-00-2014

End Date: 00-00-2014

Program Area: Knowledge Management

Non-commodity: Performance

Objectives:

To evaluate BRRI dhan62 along with others short duration Aman varieties released by BRRI and BINA in northern and central part of Bangladesh.

Methodology:

Location and experimental design- Field experiment was conducted in the Aman season 2014 in six different location of Bangladesh. Five locations were the northern part (two locations in Kurigram, two in Bogra, one in Lalmonirhat) and one in the central part (Gazipur) of Bangladesh. Field size was 30 decimal for each type of variety in all location. The experiment was laid out in Randomized Complete Block Design (RCBD). Variety was treated as a treatment and location as a replication. Plant material- Four rice varieties viz, BINA dhan7, BRRI dhan33, BRRI dhan56 and BRRI dhan62 were evaluated in this study. Agronomic management- Clean seeds of each variety with a minimum of 90% germination rate were soaked in water for 24 h and incubated for another 24 hour. Then the pre germinated seeds were shown in seedbed to produce uniform seedlings. For synchronizing maturity, BINA dhan7, BRRI dhan33 and BRRI dhan56 were seeded last week of June 2014 and BRRI dhan62 was seeded around 10 days later. Twenty days old seedlings were used for each variety. Transplanting was done at mid July of 2014 for all the varieties. In all locations transplanting were done at a time. Plant to plant and row to row spacing was 20 cm × 20 cm and three seedlings per hill were used. Fertilizer was applied at the rate of 165-50-70-45-5 kg ha^-1 of Urea, TSP, MoP, Gypsum and Zinc sulphate. TSP, Gypsum and Zinc sulphate were applied as basal at final land preparation. Urea was applied in three splits as basal, 10 days after transplanting and 30 days after transplanting. Two-third of MoP was used at final land preparation and one-third at 30 days after transplanting. All other agronomic management was done as and when necessary in optimum level to maximize the yield. Data collection- Data on grain yield was taken from 20 m² area and converted into ton per hectare. Growth duration was counted as number of days required to physiological maturity from sowing. The data on plant height, tiller m^-2, panicle m^-2, spikelet panicle^-1, grain filling percentage, 1000 grain weight and grain yield (t ha^-1) at 14% moisture content were recorded. Maximum genotypic difference, productive tillers percentage and productivity per day were calculated using the following formula: Maximum genotypic difference = 100 × (maximum - minimum)/Mean; Productive tillers percentage = 100 × (Panicle number at PM / Tiller number at PI); Productivity per day = Grain yield / Growth duration. Economic performance of different types of varieties was recorded time to time at the specific location. The total cost of production for each variety were calculated based on the labor requirement for sowing/transplanting, weeding and irrigation, manure and fertilizer cost, seed cost, harvesting and other input cost. The total income calculated based on the market price grain and straw. The benefit cost ratios (BCR) of cultivation of each variety were calculated by dividing the income by total cost of production. For farmer’s opinion, BRAC agriculture and food security programme took interview of 50 farmers about 10 rice related question for each varieties and response were expressed as percent. Statistical analysis- The data were analyzed statistically using MSTATC package. The significance of the difference among the treatment was estimated by Least Significant Difference (LSD) test at 5% and 1% level of probability (Gomez and Gomez, 1984).

Source of Information: International Journal of Agronomy and Agricultural Research, Vol. 9, No. 2, p. 198-204, 2016

Article Link (Online Journal): http://www.innspub.net

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

This result suggests that BRRI dhan62 is zinc enriched and very short duration variety for Aman season in Bangladesh. But its grain yielding capacity could not meet up the farmer’s expectation. Therefore, future research should be needed to improve grain yield of zinc enriched rice and then it will have better acceptance by general farmers.

Knowledge Management: Journal