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Response of Nitrogen Application at Different Growth Stages on Fine Aman Rice (cv. Kalizira)

M. A. Haque
Department of Agriculture Chemistry, BAU, Mymensingh

M. N. H. Miah
Department of Agriculture Chemistry, BAU, Mymensingh

M. E. Haque
UAO, DAE

M. S. Islam
UAO, DAE

M. S. Islam
PO, RKU Bank, Natore

Abstract/ Executive Summary:

An experiment was conducted at the Agronomy Farm, Bangladesh Agricultural University during the aman season of 2005-2006 to investigate the response of different doses of nitrogen application at different growth stages on fine aman rice (cv. kalizira). The experiment consisted of 3 levels of N application namely, 50% of recommended N, 100% of recommended N (150kg ha^-1 ) and 25% higher than recommended N and 3 different plant growth stages of N application namely transplanting, maximum tillering and panicle initiation stage. The application of single super phosphate, muriate of potash, gypsum and zinc sulphate were same in all the plots at the rate of 125, 67, 20 and 5 kg ha^-1, respectively. The experiment was laid out in a split plot design (SPD) with three replications. All data were analyzed using the analysis of variance technique and the mean differences were adjusted by DMRT. The results revealed that different doses of nitrogen had significant positive effect on the most of the vegetative parameters. Plant height, numbers of tiller hill^-1, leaf hill^-1, dry matter hill^-1 were to be highest with the increasing rate of nitrogen at all sampling excluding final harvest.

Keywords: Agronomic practice,Growth stages, Kalizira variety, Nitrogen fertilizer

Location: Agricultural Farm, Bangladesh Agricultural University

Start Date: 00-07-2005

End Date: 00-11-2005

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To find out the response of different doses of nitrogen application at different growth stages on fine aman rice (cv. kalizira).

Methodology:

The experiment was conducted at the Agricultural Farm, Bangladesh Agricultural University during the aman season of 2005-2006 to investigate the response of different doses of nitrogen application at different growth stages on fine aman rice (cv. kalizira). The experiment consisted of 3 levels of N application (kg ha^-1) namely, 50% of recommended dose of N (N₁), 100% of recommended dose of N (N₂) and 25% higher than recommended dose of N (N₃) and 3 different plant growth stages of N application namely transplanting (T₁), maximum tillering (T₂) and panicle initiation stage (T₃). According to the soil test values and their interpretations, the fertilizers dose were recommended with the help of FRG (2005) namely urea, single super phosphate, muriate of potash, gypsum and zinc sulphate at the rate of 150, 125, 67, 20 and 5 kg ha^-1 respectively and except urea entire fertilizers were applied as same in all the plots at the time of final land preparation. Urea was applied in three equal splits at transplanting, maximum tillering and panicle initiation stage of the crop. The experiment was laid out in a split plot design (SPD) with three replications. The unit plot size was 5 m x 2 m with an inter-plot and inter-block spacing of 0.5 m and 1.5 m respectively. Thirty days old two healthy seedlings were transplanted per hill in the experimental plots at a plant spacing of 20 cm x 15 cm on 16 September, 2005 and the crop was harvested at maturity on 7 January, 2006. All the intercultural practices such as gap filling, weeding, water and pest management were done in time as and when necessary. Five hills were randomly selected from each plot for data collection excluding border rows. The data recorded at vegetative stage continued at 15 day intervals beginning from 45 DAT up to 75 DAT and harvesting of the crop and the parameters were plant height (cm), number of tillers hill^-1, number of leaves hill^-1, shoot dry matter gm hill^-1. All data were analyzed using the analysis of variance technique and the mean differences among the treatment were adjusted by DMRT.

Source of Information: J. Environ. Sci. & Natural Resources, 5(1): 199 - 203, 2012; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results revealed that different doses of nitrogen had significant positive effect on the most of the vegetative parameters. Plant height, numbers of tiller hill^-1, leaf hill^-1, dry matter hill^-1 were to be highest with the increasing rate of nitrogen at all sampling excluding final harvest.

Knowledge Management: Journal