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Effect of Urea Super Granules, Prilled Urea and Poultry Manure on the Yield of Transplant Aman Rice Varieties

M. H. Kabir
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. A. R. Sarkar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

A. K. M. S. H. Chowdhury
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

An experiment was carried out at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh in transplant Aman season 2008 to find out the effect of urea super granules (USG), prilled urea (PU) and poultry manure (PM) on the yield and yield attributes of transplant Aman rice varieties. Two transplant Aman rice varieties viz. BRRI dhan41 and BRRI dhan46 and ten levels of integrated nutrient management encompassing USG, PU and PM were tested following randomized complete block design with three replications. It was observed that variety BRRI dhan41 gave higher grain yield than BRRI dhan46. For fertilizer effect, the highest grain yield (5.17 t ha^-1) was obtained from full dose of USG (1.8g) and other inorganic fertilizers, which was similar to that obtained from full dose of USG (1.8g) + PM at 2.5 t ha^-1 followed by full dose of PU + PM at 2.5 t ha^-1. The lowest grain yield was obtained in the control treatment. In case of interactions, the highest grain yield was obtained in BRRI dhan41×1.8g USG and other inorganic fertilizers which was similar to that of the same dose of USG with PM at 2.5 t ha^-1 and the lowest yield was obtained in the control treatment. It was assessed that a considerable portion (31.25%) of PU nitrogen could be saved by using USG (1.8g) together with other inorganic fertilizers or with PM at 2.5 t ha^-1.

Keywords: Urea super granules, Prilled urea, Poultry manure, Yield, Transplant Aman rice

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-00-2008

End Date: 00-00-2008

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To observe the integrated nutrient management by using USG, PU and PM on the yield of transplant Aman rice.

Methodology:

The experiment was carried out at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh in transplant Aman season 2008. The experiment consisted of two transplanted Aman rice varieties viz. V₁=BRRI dhan41 and V₂=BRRI dhan46; and ten levels of integrated nutrient management viz. T₁ = Control (No PM and NPKSZn fertilizers), T₂= PM at 5 t ha^-1,T₃ = PM at 2.5 t ha^-1, T₄= Recommended dose of PU and other inorganic fertilizers (i.e. 80,60,40,10,5 kg of N, P₂O₅, K₂O, S, ZnSO₄, respectively ha^-1), T₅ = Full dose of USG and other inorganic fertilizers (i.e. 55,60,40,10,5 kg of N, P₂O₅, K₂O, S, ZnSO₄, respectively ha^-1), T₆ = ½ PU and PKSZn + PM at 2.5 t ha^-1, T₇ = 0.9 g USG + PM at 2.5 t ha^-1, T₈ = 0.9 g USG + PM at 5 t ha^-1, T₉ = 1.8 g USG (full dose for transplant Aman) + PM at 2.5 t ha^-1 and T₁_o = Full dose of PU (for transplant Aman) + PM at 2.5 t ha^-1. The experiment was laid out in a randomized complete block design with three replications. The unit plot size of the experiment was 4.0m × 2.5m. Thirty- day old seedlings were transplanted at spacing of 20 cm×20 cm with two seedlings hill^-1. All the fertilizers except prilled urea were applied as basal at final land preparation. Prilled urea was top dressed in three equal splits at 15, 30 and 45 days after transplanting (DAT). Gap filling, weeding, irrigation and other necessary intercultural operations were done in proper time. The crops were harvested at full maturity. The maturity of crops was determined when some 80% of the grains became golden yellow in colour. Five sample plants were randomly selected and uprooted prior to harvesting from each plot excluding border rows to record data on yield contributing characters. Central 5 m² area in each plot was harvested to record grain and straw yields. Grain and straw yields plot ^-1 were recorded after threshing by a pedal thresher, winnowing and sun drying properly. The yield values were adjusted to 12% moisture content and converted to t ha^-1. All the collected data were analyzed following standard statistical procedure and differences among treatment means were adjudged by Duncan’s Multiple Range Test (DMRT) (Gomez and Gomez, 1984).

Source of Information: J. Bangladesh Agril. Univ. 7(2): 259–263, 2009 ISSN 1810-3030

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It was observed that variety BRRI dhan41 gave higher grain yield than BRRI dhan46. For fertilizer effect, the highest grain yield (5.17 t ha^-1) was obtained from full dose of USG (1.8g) and other inorganic fertilizers, which was similar to that obtained from full dose of USG (1.8g) + PM at 2.5 t ha^-1 followed by full dose of PU + PM at 2.5 t ha^-1. The lowest grain yield was obtained in the control treatment. In case of interactions, the highest grain yield was obtained in BRRI dhan41×1.8g USG and other inorganic fertilizers which was similar to that of the same dose of USG with PM at 2.5 t ha^-1 and the lowest yield was obtained in the control treatment. It was assessed that a considerable portion (31.25%) of PU nitrogen could be saved by using USG (1.8g) together with other inorganic fertilizers or with PM at 2.5 t ha^-1.

Knowledge Management: Journal