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Effect of Water and Fertilizer Management on the Yield and Yield Components of Boro Rice Under Sri Method

M. A. R. Sarkar
Professor
Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh

M. Z. Hossain
DAE, Khamarbari, Farmgate, Dhaka, Bangladesh

A.K.M.M. lslam
Assistant Professor
Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to delineate proper management of water and fertilizer to obtain maximum yield of Boro rice. Two levels of water management iz. (i) SRI water management (moist soil, water at field capacity) and (ii) BRRI water management (5-6 cm standing water), and five fertilizer management practices viz., (i) BRRI fertilizer management (120, 60, 40, 1O, 5kg N, P₂O₅, K₂O, S and Zn kg ha^-1, respectively) (ii) cowdung @ 10 t ha^-1 iii) poultry manure @ 5 t ha^-1 , iv) 50% of BRRI recommended fertilizer + 50% of the cowdung, (v) 50% BRRI recommended fertilizer + 50% poultry manure were arranged in split-plot design with three replications. The results showed that SRI water management produced higher grain and traw yields than that of BRRI water management. Number of total tillers hill^-1, bearing tillers hill^-1total spikelets panicle^-1 and sterile spikelets pahicle^-1 gave similar trends to that of grain and straw yields. BRRI recommended fertilizer management produced the highest grain yield and the second highest grain yield was obtained in 50% of the BRRI recommended fertilizer + 50% of the poultry manure. The lowest grain yield was obtained in cowdung @ 10 t ha^-1. ln terms of interaction, SRI water management in combined with BRRI fertilizer management produced the highest grain yield and the second highest grain yield was obtained in BRRI water management x BRRI fertilizer management and in SRI water management x 50% BRRI fertilizer management + 50% poultry manure. The lowest grain yield was found in BRRI water management x cowdung @ 10 t ha^-1.

Keywords: SRl, Water and fertilizer management, Yield, Boro rice

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-01-2006

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To delineate proper management of water and fertilizer to obtain maximum yield of Boro rice.

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from January to June 2006. The experimental site belongs to OId Brahmaputra floodplain (AEZ 9) with medium high topography and loamy texture. The pH of the soil was 6.81. The organic Carbon, total N content, available P, available S, Exchangeable K and cation exchange capacity were 0.463%, 0.085%, 13.20 ppm, 5.13 ppm, 0.21 me/100 g soil and 11.12 me/100 g soil, respectively. The experimental treatments comprised two water management viz- (i) SRI water management (moist soil, water at field capacity) and (ii) BRRI water management (5-6 cm standing water); and five fertilizer management practice.s viz. (i) BRRI fertilizer management (120, 60, 40, 10 and 5 kg N, P₂O₅, K₂O, S and Zn kg ha^-1, respectively), (ii) cowdung of tha^-1, (iii) poultry manure, (iv) 50% of BRRI recommended fertilizer + 50% of cowdung, (v) 50% BRRI recommended fertilizer + 50% poultry manure. BRRI dhan29, a high yielding Boro rice variety, was used as plant material. The experiment was conducted in split-plot design with three replications assigning water management in the main plot and fertilizer management in the sub-plot. The unit plot size was 4.0 m x 2.5 m. The bunds-around individual plots were made fine enough to control water movement within the plots. Ten-day old seedlings were transplanted on 22 January 2006 in the well puddled plots maintaining 35 cm x 35 cm spacing. Urea was top dressed in three equal splits at 15, 30 and 45 days after transplanting (DAT). The full doses of triple supper phosphate (TSP), muriate of potash (MOP), gypsum, zinc and poultry manure were applied at final land preparation as per treatment. Intercultural operations were done as and when necessary. The first weeding was done at 15 DAT and subsequent weedings were done at 15-day intervals up to 70 DAT. Plants from the central 5 m² harvest area of each plot were harvested at full maturity when 90% of the grains turned golden yellow for recording data on grain and straw yields. Five plant samples plot^-1 excluding harvest area and border rows were selected randomly for recording data on crop characters and yield components. The harvested crop was then threshed, cleaned, sun dried and weighed to record the yields of grain and straw at 14% moisture content. The yields of grain and straw were then converted into t ha^-1. The recorded data were analyzed using Analysis of variance and mean differences were adjudged with Duncan's New Multiple Range Test.

Source of Information: J. Bangladesh Agril. Univ. 5(2):231-237, 2007

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

ln terms of interaction, SRI water management in combined with BRRI fertilizer management produced the highest grain yield and the second highest grain yield was obtained in BRRI water management x BRRI fertilizer management and in SRI water management x 50% BRRI fertilizer management + 50% poultry manure. The lowest grain yield was found in BRRI water management x cowdung @ 10 t ha^-1.

Knowledge Management: Journal