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Influence of Nitrogen and Phosphorus on the Growth and Yield of BRRI Dhan57

Mahbubul Haque Imrul
Department of Soil Science, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh.

Mst. Afrose Jahan
Department of Soil Science, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh.

Mominul Haque Rabin
Department of Agricultural Chemistry, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh.

Md. Abubakar Siddik
Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh.

Shahidul Islam
Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh.

Marjana Yeasmin
Department of Agronomy, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh.

Abstract/ Executive Summary:

The field experiment was carried out during the period from July to November, 2013 at the research farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh to investigate the influence of nitrogen and phosphorus on the growth and yield of BRRI dhan57. The two factorial experiments were laid out in a Randomized Complete Block Design (RCBD) with three replications. Four levels of nitrogen N₀: 0 kg N ha^-1 , N₁: 90 kg N ha^-1, N₂: 120 kg N ha^-1, N₃: 150 kg N ha^-1 and three levels of phosphorous P₀: 0 kg P₂O₅ ha^-1, P₁: 25 kg P₂O₅ ha^-1 and P₂: 35 kg P₂O₅ ha^-1 were used in this experiment. Data revealed that at 30 and 60 days after transplanting (DAT) and at the time of harvest the tallest plants were observed in the treatments N₂ (120 kg N ha^-1), P₂ (35 kg P ha^-1) and treatment combination N₂P₂ (120 kg N and 35 kg P ha^-1) whereas, the treatments N₀, P₀ and treatment combination N₀P₀ (without N and P) showed the smallest plant height in each case, respectively. Side by side, N₂, P₂ treatments and N₂P₂ treatment combination gave the maximum effective tillers hill^-1, highest length of panicle and the maximum filled grains panicle^-1. The highest 1000 grain weight (20.85 g), grain yield (4.95 t ha^-1), straw yield (5.39 t ha^-1) and biological yield (10.34 t ha^-1) were found in the treatment combination N₂P₂ and also found highest in each individual under N₂ and P₂ treatments.

Keywords: Rice, Nitrogen, Phosphorus, Growth, Yield

Location: Sher-e-Bangla Agricultural University, Dhaka.

Start Date: 00-07-2013

End Date: 00-11-2013

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To select the suitable combination of N and P fertilizers concerning to growth and yield of BRRI dhan57

Methodology:

The experiment was carried out in typical rice growing clay loam soil at the farm of Sher-e-Bangla Agricultural University, Dhaka. The experimental area is located in the sub tropical humid condition with medium rainfall during the kharif season (March-September) and scanty rainfall in the rabi season (October-February). During the crop growing period, the mean of minimum and maximum temperature, mean relative humidity and total rainfall have been presented. The experiment was consisted on four levels of nitrogen N₀: 0 kg N ha^-1 , N₁: 90 kg N ha^-1, N₂: 120 kg N ha^-1, N₃: 150 kg N ha^-1 and three levels of phosphorous P₀: 0 kg P₂O₅ ha^-1, P₁: 25 kg P₂O₅ ha^-1 and P₂: 35 kg P₂O₅ ha^-1. There were in total 12 (4×3) treatment combinations such as N₀P₀, N₀P₁, N₀P₂, N₁P₀, N₁P₁, N₁P₂, N₂P₀, N₂P₁, N₂P₂, N₃P₀, N₃P₁ and N₃P₂. The land was ploughed by power tiller. Laddering helped breaking the clods and leveling the land followed every ploughing. Before transplanting each unit of plot was cleaned by removing the weeds, stubble and crop residues. Finally each plot was prepared by puddlings for seedling transplanting. BRRI dhan57 was used as planting material in this experiment. This variety was developed at the Bangladesh Rice Research Institute from the cross between Bashmoti (D) and BR5 in 1998. It is recommended for Aman season. The two factorial experiments were laid out in a RCBD design with three replications. The size of the each plot was 3.0 m × 1.5 m. The distances between block to block and plot to plot were 1.0 m and 0.5 m, respectively. Urea, Triple Super Phosphate (TSP), Muriate of Potash (MOP), Gypsum, zinc sulphate and borax were applied as the source of N, P, K, S, Zn and B respectively. Doses of nitrogen and phosphorus were applied as per treatments. During the final land preparation the one third amount of urea and entire amount of TSP, MOP (120 kg ha^-1) , gypsum (30 kg ha^-1), zinc sulphate (2 kg ha^-1) and borax (10 kg ha^-1) were applied. At the tillering and panicle initiation stages, rest of urea was applied in two equal installments (BRRI, 2013). The seedlings of rice were raised wet-bed methods. The seeds were sprouted by soaking for 72 hours. The sprouted seeds were sown uniformly in the well-prepared seed bed. During seedling growing, no fertilizers were used. Proper water and pest management practices were followed whenever required. The 30 days old nursery seedlings of BRRI dhan57 were uprooted carefully and were kept in soft mud in shade. The seedlings were then transplanted with 20 cm x 20 cm spacing on the well puddle plots. After one week of transplanting, all plots were checked for any missing hill, which was filled up with extra seedlings whenever required. All the collected data on different parameters were statistically analyzed following the analysis of variance (ANOVA) technique using MSTAT-C computer package program and mean differences adjusted by Least Significant Difference (LSD) test at 5% level of significance.

Source of Information: Plant Science Today (2016) 3(2): 175-185

Article Link (Online Journal): http://dx.doi.org/10.14719/pst.2016.3.2.230

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Different doses of nitrogen and phosphorus varied significantly for growth and yield of BRRI dhan57. Maximum of yield contributing parameter were in application 120 kg ha^-1 nitrogen fertilizer, also with application 35 kg ha^-1 phosphorus fertilizer. It was revealed that application of 120 kg N ha^-1 along with 35 kg P₂O₅ ha^-1 has more potential in regarding to yield and yield contributing characters of BRRI dhan57.

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