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Effect of Zinc and Phosphorus on Yield of Oryza Sativa (cv. Br-11)

K. M. Mahbubur Rahman
Research Officer, District Education Office, Gazipur

Gokul Chandra Biswas
Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology, Sylhet

Mohammed Abdul Hye
Agriculture Extension Officer, Narshingdi Sadar, Narshingdi

Animesh Sarkar
Department of Food Engineering and Tea Technology, Shahjalal University of Science and Technology, Sylhet

Farhana Sharmeen
Department of Genetics and Plant Breeding, Hajee Mohammad Danesh Science & Technology University, Dinajpur

Md. Abul Khair Chowdhury
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

An experiment was conducted at Bangladesh Agricultural University Farm during Aman season to study the effect of zinc and phosphorus on yield of rice (cv. BR11). The experiment was laid-out in Randomized Complete Block Design (RCBD) with 3 replications assigning 12 treatments comprising 4 levels of Zn (0, 5, 10 and 20 kg Zn ha^-1 from zinc sulphate) and 3 levels of P (0, 25 and 50 kg P₂O₅ ha^-1 from TSP) along with basal doses of 100 kg N ha^-1 from urea, 40 kg K₂O ha^-1 from muriate of potash and 12 kg S ha^-1 from gypsum. Zn and P either alone or in combination showed significantly positive effect on the grain and straw yield of BR11 rice. The highest grain (5.97 t ha^-1) and straw yields (11.60 t ha^-1) were obtained from Zn₁₀ P₅₀ treatment and the single treatment P₅₀ and Zn₂₀ produced maximum grain yield 5.61 t ha^-1 and 5.57 t ha^-1 respectively. Among the yield contributing characters, number of grain per panicle, number tiller per hill, 1000-grain weight, grain yield and straw yield were significantly influenced by the single effect of zinc and phosphorus, but plant height and panicle length were not significant. Number of grain panicle^-1, grain and straw yield were also significantly increased by the interaction effect of zinc and phosphorus. The present study demonstrated that combined application of Zn₁₀ and P₅₀ treatment showed a significant effect on production of the highest yield and also positive effect on all yield contributing characters.

Keywords: Zinc, Phosphorus, Yield, Oryza sativa, Rice

Location: Bangladesh Agricultural University Farm, Mymensingh

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To evaluate the effect of Zn and P on the yield and yield contributing characters of BR-11 rice.

Methodology:

The experiment was conducted at Bangladesh Agricultural University Farm with a view to finding out the effect of zinc and phosphorus on yield of rice (cv.BR11). The experimental field is located at 24.750N latitude and 90.50E longitude at a height of 18 m above the main sea level. The land was medium high belonging to the Old Brahmaputra Floodplain Agro-ecological Zone, which falls into the Non-calcareous Dark Grey Floodplain Soil. A modern high yielding variety BR11 (Mukta) rice was used as the test crop. The variety was released by Bangladesh Rice Research Institute (BRRI), Gazipur for growing only in Aman season. It is well-stand, photosensitive and somewhat resistant to pest and disease. It takes 120-130 days and the average yield lies between 4.5 to 5.5 t ha^-1. The experiment was laid-out in Randomized Complete Block Design (RCBD) with 3 replications assigning 12 treatments comprising 4 levels of Zn (0, 5, 10 and 20 kg Zn ha^-1 from zinc sulphate) and 3 levels of P (0, 25 and 50 kg P₂O₅ ha^-1 from TSP) along with basal doses of 100 kg N ha^-1 from urea, 40 kg K₂O ha^-1from muriate of potash and 12 kg S ha^-1 from gypsum. The sources used for the different elements were Urea (46% N), TSP (48% P₂O₅), MOP (60% K₂O), zinc sulphate (36% Zn) and gypsum (18% S) which were collected from local market of Mymensingh. Under the trial the total area was 400 square meter. The size of each plot was 10 m² (4m × 2.5 m). Inter block and inter plot spacing were 1.5 m and 0.3 m, respectively. Thirty days old healthy seedlings were transplanted in the experimental plots. Plant spacing maintained was 25cm × 15cm and three seedlings were transplanted per hill. The number of row and hills per plot was equal in all plots. Gap filling was made 7 days after transplanting to make uniform plant population density for unit plot. Weeding, intercultural operations, application of irrigation water were done in the pot for ensuring and maintaining proper growth and development of crop. Plant height, panicle length, number of tillers per hill, number of grains per panicle, 1000 grain weight, grain yield and straw yield of rice as yield component were recorded plot wise. Ten hills were selected at random from each plot before harvesting. The data of crop characters were analyzed statistically by means of computer package MSTAT. The differences among the treatments were adjudged by the Duncan’s Multiple Range Test (DMRT).

Source of Information: BANGLADESH RESEARCH PUBLICATIONS JOURNAL; ISSN: 1998-2003, Volume: 5, Issue: 4, Page: 351-358, July -August, 2011

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Among the yield contributing characters, number of grain per panicle, number tiller per hill, 1000-grain weight, grain yield and straw yield were significantly influenced by the single effect of zinc and phosphorus, but plant height and panicle length were not significant. Number of grain panicle^-1, grain and straw yield were also significantly increased by the interaction effect of zinc and phosphorus. The present study demonstrated that combined application of Zn₁₀ and P₅₀ treatment showed a significant effect on production of the highest yield and also positive effect on all yield contributing characters.

Knowledge Management: Journal