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Phosphate Solubilizing Rhizoplane Bacteria on Growth and Yield of Transplant Aman Rice

M. S. Alam
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202

N. M. Talukder
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202

M. T. Islam
School of Agriculture and Rural Development, Bangladesh Open University, Gazipur-1705

A. Sarkar
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202

M. M. Hossain
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

The effect of Inoculation of phosphate solubilizing bacteria (PSB) isolated from rice rhizoplane on transplant aman rice (Oryza sativa L.) cv. BRRIdhan 39 with addition of four different levels of P (0, 15, 30 and 45 kg P ha-1) as triple superphosphate was studied through a pot culture experiment. Inoculation of rice seedlings with PSB strains RB03 and RB10 increased plant height, number of tillers hill^-1, panicle length, number of filled grains panicle^-1, weight of 1000 grains and grain yield of rice. Inclusion of TSP accentuated the performance of PSB in increasing the growth and yield attributes of rice.

Keywords: Phosphate solubilizing rhizoplane bacteria, Transplant aman rice, Root inoculation, Growth and yield.

Location: Seed Pathology Centre and Net House and laboratory of the Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh

Start Date: 00-03-2006

End Date: 00-11-2006

Program Area: Crop-Soil-Water Management

Commodity: Bio fertilizer

Objectives:

1. To study the performance of phosphate solubilizing bacterial strains as compared to chemical P fertilizers on growth and yield attributes of rice.

Methodology:

The study was conducted at bacteriology laboratory of Seed Pathology Centre and Net House and laboratory of the Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh during March, 2006 to November, 2006 using acidic red soil through pot culture. Following root inoculation with previously isolated PSB strains RB03 and RB10, four seedlings of BRRIdhan 39 (life span -110 days, T. aman rice variety released by BRRI) were transplanted per hill in each pot (30cm×15cm×30cm) containing 7.5 kg acidic red soil collected from Bhaluka (Clay textured soil having pH 4.47) in Aman season. The experiment was laid out in randomized complete block design with two factors viz. PSB inoculants {i.e. Inoculation without PSB strain (RB₀) and with PSB strains RB₀₃ (RB₀₃) and RB10 (RB₁₀)} and four different levels of P (0, 15, 30 and 45 kg P ha^-1) as triple superphosphate fertilizer with 3 replications. N, P, K, S fertilizers were applied @ 120 kg N ha^-1, 30 kg P ha^-1, 60 kg K ha^-1 and 9 kg S ha^-1 as urea, TSP, MoP and gypsum respectively. To compare the efficiency of PSB, P was applied at the rate of 0, half, full and one and a half times of the recommended dose as TSP. One third of N and total of the other fertilizers were mixed with soil at the time of pot preparation. Rest two third of urea was top dressed 25 days of transplanting and before panicle initiation. Intercultural operations were done as and when needed for proper growth and development of the crop. Data on growth, yield and different yield components of rice were recorded during the growing period and after harvest.

Source of Information: J. Agrofor. Environ. 2(1): 1-6, 2008; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Inoculation of rice seedlings with PSB strains RB₀₃and RB₁₀ increased plant height, number of tillers hill^-1, panicle length, number of filled grains panicle^-1, weight of 1000 grains and grain yield of rice. Inclusion of TSP accentuated the performance of PSB in increasing the growth and yield attributes of rice.

Knowledge Management: Journal