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Effect of Crop Establishment Method and Nutrient Management on Yield and Yield Attributes of Short Duration T. Aman Rice

L. Nahar*
Bangladesh Rice Research Institute, Joydebpur, Gazipur-1701

A. B. S. Sarker
Bangladesh Rice Research Institute, Joydebpur, Gazipur-1701

M. M. Mahbub
Bangladesh Rice Research Institute, Joydebpur, Gazipur-1701

R. Akter
Bangladesh Rice Research Institute, Joydebpur, Gazipur-1701

Abstract/ Executive Summary:

A field trial was conducted at Agronomy Farm of Bangladesh Rice Research Institute to find out the effect of crop establishment method and nutrient management on yield performance of BRRI developed short-duration Aman rice var. BRRI dhan62 during July to October 2016. The trial comprised of four crop establishment methods viz., M1 = BRRI recommended puddle transplanting, M2 = System of rice intensification (SRI) method (9-days old seedling transplantation), M3 = Sprouted seed in line sowing and M4 = Sprouted seed in broadcasting and three nutrient management levels viz.,N1 = BRRI recommended nutrient management, N2 = Soil test-based nutrient management, N3 = Control. The study was conducted in a factorial Randomized Complete Block Design with three replications. The result showed that planting methods had significant effects on the yield of rice. The SRI method along with BRRI recommended fertilizer dose produced the maximum grain yield of 4.49 t ha^-1 which was statistically similar with that produced in SRI method day- and soil test-based nutrient management combination. The highest gross margin (Tk. 36,308.00 ha^-1) and cost benefit ratio (2.06) were observed in direct seeding of sprouted seed in line sowing method along with BRRI recommended fertilizer dose. So, direct seeding of sprouted seed in line could be a suitable planting method due to reduction of 26.0% production cost associated with seedling raising and transplanting operations.

Keywords: Crop establishment, Nutrient management, Yield, Yield attributes

Location: At Agronomy Farm of Bangladesh Rice Research Institute

Start Date: 00-07-2016

End Date: 00-10-2016

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

The performance of different seedling establishment methods and nutrient management practices on yield and yield attributes of Aman rice was evaluated.

Methodology:

An experiment was conducted at the Agronomy farm of Bangladesh Rice Research Institute, Gazipur-1701 belongs to AEZ-28, during the period from July to October 2016 to find out the effect of different rice seedling establishment methods and nutrient management on the yield and yield attributes of short duration Aman rice variety BRRI dhan62. Soil of the experimental field belongs to the Shallow Red Brown Terrace Soils. The experiential soil characters revealed that the soil was neutral having pH 6.64, organic matter content was (2.54%), total N (0.129%), P (18.12µg/g), and S (11.64µg/g) and K (0.10meq/100 g of soil). The soil nutrient content showed that organic matter was medium in level, N, S, K was low and whereas, P was optimum in level. The experiment comprised of four crop establishment methods Viz. M1 = BRRI recommended puddle transplanting, M2 = SRI method (9-days old seedling transplantation), M3 = sprouted seed sown in line and M4 = sprouted seed by broadcasting method and three nutrient management package viz. N1= BRRI recommended dose of fertilizer, N2=Soil test based recommended dose of fertilizer, and N3 = Control. On the basis of soil analysis data the exact fertilizer dose was calculated by using the following formula from FRG’12. The formula was

Fr = Uf- Ci/Cs X (St-Ls)

Where,

Fr = Fertilizer nutrient require for given soil test value

Uf = Upper limit of the recommended fertilizer nutrient for the respective STVI class Ci = unit of class intervals used for fertilizer nutrient recommendation

Cs = unit of class intervals used for STVI class St = soil test value

Ls= lower limit of the soil test value within STVI class

The experiment was conducted in a factorial Randomized Complete Block Design (RCBD) with three replications. The sprouted seeds were sown in line (line to line distance 20 cm) and broadcasting methods in the assigned plots by manually on 29 July, 2016 and also sown in the nursery bed for raising seedling which was pre-pared previously. 25-day old seedlings were transplanted (2-3 seedlings hill^-1) on 23 August 2016 with a spacing of 20 cm× 20 cm while in SRI system 9-days old seedlings (1 seedling hill^-1) were transplanted with a spacing 25cm x 25 cm on 08 August 2016. Light irrigation was applied 4- 5 days after seeding to facilitate germination and plant establishment depending upon soil moisture in dry seeded plots. The experiment was conducted in rainfed condition but supplemental irrigation was applied as per necessary. According to BRRI recommended fertilizer was applied @ 200-62-83-56-5 kg ha^-1 urea, triple super phosphate, muriate of potash, gypsum and zinc sulphate as per soil test based fertilizer was applied @ 113-32-116-46-5 kg ha^-1 urea, triple super phosphate, muriate of potash, gypsum and zinc sulphate. Entire quantity of all fertilizers except urea was applied as basal dose during final land preparation and mixed thoroughly with soil. Urea was top -dressed in three equal installments i.e., during sowing/transplanting, tillering stage and seven days before panicle initiation. All agronomic practices were performed uniformly for all the treatments. Two hand weedings were done at 30 and 50 DATs. Harvesting was done from 25 October 2016 to 01 November 2016 depending upon the maturity of the planting methods. Data were analyzed statistically for analysis of variance (ANOVA) following the method described by Gomez and Gomez (1984).

Source of Information: Bangladesh Agron. J. 2017, 21(1): 117-123

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the results of the study, it can be concluded that short-duration Aman variety BRRI dhan62 performed better under SRI and BRRI recommended transplantation method along with BRRI recommended fertilizer doses than other methods in terms of grain yield. From the economic point of view, the cultivation of BRRI dhan62 with direct seeding of spouted seed in line can be recommended for reducing the production cost.

Knowledge Management: Journal