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Zinc Nutrition of Fine Rice Varieties

M.S. H.Bir
Agronomy Division, Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh

M.P.Anwar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh

M.M.Haque
TCP Division, Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh

M.S.Islam
Department of Agriculture Extension, Khamarbai, Dhaka.

M.H. Rahman
Agronomy Division, Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh

Abstract/ Executive Summary:

A field experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from July to December 2009 with five fine rice varieties namely BRRI dhan34,BRRI dhan37,BRRI dhan38,Basmati and Kalizira grown with four levels of zinc viz., 0, 4, 8 and 12 kg ha^-1 to identify the suitable variety and its optimum Zn level for higher yield. The experiment was laid out in a randomized complete block design with three replications. Variety had significant effect on all the crop characters except 1000-grain weight. Zinc levels had significant effect on all the crop characters except number of non-effective tillers hill^-1 and 1000-grain weight. The variety BRRI dhan38 produced the highest grain yield (4.55 t ha^-1) was also obtained from BRRI dhan38. As for zinc level, a regular trend of increase in all the crop characters except non-effective tillers hill^-1and 1000-grain weight were observed with the increase in the zinc levels from 0 to 12 kg ha^-1. The highest grain yield of 4.01 t ha^-1 was recorded with the crop received the level of zinc i.e. 8 kg ha^-1. The effect of interaction between variety and zinc level was significant for most of the characters. BRRI dhan38 and 8 kg Zn ha^-1 interacted favorably to produce the highest grain yield of 5 t ha^-1. The results of the present study clearly reveal that the zinc fertilizers have significant effect on the performance of fine rice and 8 kg Zn ha^-1 appears to be the best, and BRRI dhan38 was the highest yielding fine rice variety closely followed by BRRI dhan37.

Keywords: Zinc level, Grain yield and Fine rice variety.

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 20-08-2009

End Date: 16-12-2009

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To finding out the most suitable fine rice variety and identifying the optimum zinc level for maximizing yield of fine rice.

Methodology:

The research work was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from July to December, 2009 with a view to finding out the effect of variety and zinc level on the yield of fine rice. The experiment consisted of the following factors (a) varieties viz. BRRI dhan34, BRRI dhan37, BRRI dhan38, Basmati and Kalizira and (b) levels of zinc, viz 0, 4, 8 and 12 kg Zn ha^-1. The experimental field belongs to the non-calcareous Dark Gray Flood plain soil under Old Brahmaputra Flood Plain Agro-Ecological Zone. The experimental land was medium high with silty loam texture and low fertility level. pH, organic matter, total nitrogen, available sulphur, available phosphorus, exchangeable potassium and available zinc content of the experimental soil were 6.75, 1.29%, 0.01%, 14.2 ppm, 16.72 ppm. 0.12 ppm and0.5 ppm, respectively. The experiment was laid out in a randomized complete block design with three replications. The size of each unit plot was 5m² (2.5 m x 2 m) with the spacing of 25 cm x 15 cm and the total number of plots was 60. Thirty days old seedling were transplanted in the experimental plot on 20 August, 2009 at the rate of 3 seedlings hill^-1 following the spacing 25 cm x 15 cm. TSP, MOP and gypsum at the rate of 52, 60 and 30 kg ha^-1 were applied as basal dose and urea @ 90 kg ha^-1was applied as top dressing on three equal splits at 15, 30 and 45 days after transplanting. Intercultural operations were done as and when necessary. Basmati and Kalizira were harvested on 8 December and BRRI dhan34, BRRI dhan37 and BRRI dhan38 were harvested on 16 December. Ten hills were randomly selected from each plot prior to harvest for recording different data on yield components. Whole plot was harvested to record the grain and straw yields. Finally grain yield was converted to 14% moisture content. The collected data were analyzed using the MSTAT Computer Programme and the difference among treatment means were adjudged by Duncan’s Multiple Range Test.

Source of Information: J. Agrofor. Environ. 7 (2): 201-203, 2013; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Zinc levels had significant effect on all the crop characters except number of non-effective tillers hill^-1 and 1000-grain weight. The variety BRRI dhan38 produced the highest grain yield (4.55 t ha^-1) was also obtained from BRRI dhan38. As for zinc level, a regular trend of increase in all the crop characters except non-effective tillers hill^-1and 1000-grain weight were observed with the increase in the zinc levels from 0 to 12 kg ha^-1. The highest grain yield of 4.01 t ha^-1 was recorded with the crop received the level of zinc i.e. 8 kg ha^-1. The effect of interaction between variety and zinc level was significant for most of the characters. BRRI dhan38 and 8 kg Zn ha^-1 interacted favorably to produce the highest grain yield of 5 t ha^-1. The results of the present study clearly reveal that the zinc fertilizers have significant effect on the performance of fine rice and 8 kg Zn ha^-1 appears to be the best, and BRRI dhan38 was the highest yielding fine rice variety closely followed by BRRI dhan37.

Knowledge Management: Journal