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Study the Effect of Phosphorous on Sesbania Biomass Production and Effect of Incorporation of Sesbania on the Succeeding Rainfed Rice Crops Under Rainfed Environment

Tara Chand
Principal Scientific Officer
Farm Management Division, BRRI, Gazipur-1701.Bangladesh.

Md. Jahan Ullah Chowdhury
SSO
Farm Management Division, BRRI, Gazipur-1701.Bangladesh.

Meer Md. Muniruzzaman
SSO
Farm Management Division, BRRI, Gazipur-1701.Bangladesh.

FIM Golam Wahed Sarker
SO
Farm Management Division, BRRI, Gazipur-1701.Bangladesh.

Md. Mizanur Rahman
SO
Farm Management Division, BRRI, Gazipur-1701.Bangladesh.

Abstract/ Executive Summary:

The study was conducted to determine the effect of phosphorous on Sesbania biomass production and effect of incorporation of Sesbania on the succeeding rainfed T. Aus and T. Aman rice crops under rainfed environment at BRRI Farm, Gazipur in 1994. The application of different rates of phosphorous did not affect the plant population but the plant height varied significantly between the plots with and without phosphorous. Phosphorous application had a significant beneficial effect on the total dry matter and nitrogen production of Sesbania. Application of 60 kg P₂O₅/ha added 213 kg N to the soil. Results revealed that the grain yield was higher (3.81 t/ha) with added fertilizer of 80-40-40 kg NPK/ha. This was similar to treatment 4 where 10.33 t/ha GM was incorporated into the soil. So, the incorporation of 10.33 t/ha GM may supplement 80 kg N and 40 kg P from chemical fertilizer. Grain yield was significantly different between treatments of GM-0-0-40 and GM-0-0-40, but straw yield was higher in plot provided with a higher amount of GM biomass (10.33 t/ha) as it was in treatment of GM-0-0-40. The total crop biomass production was also higher in those plots where higher rates of GM biomass were applied. The residual effect of GM on the second subsequent crop (T. Aman) was low, reflected by reducing the grain yield and total biomass production of rice. Grain yield was the highest in plots, fertilized with 80 kg N/ha than the plots fertilized with 40 kg N/ha. Straw yield of total biomass production was also higher in 80 kg n/ha plots as compared to GM applied plots.

Keywords: Sesbania, Biomass, Incorporation, Rainfed Rice

Location: BRRI Farm, Gazipur

Start Date: 30-03-1994

End Date: 31-12-1994

Program Area: Crop-Soil-Water Management

Commodity: Manures

Objectives:

To improve the soil health and farm and
To determine the effect of phosphorous on Sesbania biomass production
To see the effect of incorporation of Sesbania on the succeeding rainfed T. Aus and T. Aman rice crops under rainfed environment

Methodology:

The study was conducted to determine the effect of phosphorous on Sesbania biomass production and effect of incorporation of Sesbania on the succeeding rainfed T. Aus and T. Aman rice crops under rainfed environment at BRRI Farm, Gazipur in 1994. Initial soil samples were collected from the experimental field after removing the straw of the previous rice crop. Bunds were made around the plots in finally prepared land, water was drained out and dhaincha (Sesbania rostrata) was broadcast seeded in the assigned plots with a seed rate of 50 kg/ha. Phosphorous was applied on dhaincha growing plots at the rate of 0-30-60-90 kg P₂O₅for dry matter and total N-production. Rice variety BR27 and BR11 was used for T. Aus and T. Aman season, respectively. The unit plot size of the experimental plot was 10 sq. m.. All other intercultural operations and protection measures were taken as when necessary. Data on yield contributing characters were collected from five randomly selected plants and grain yield was recorded from an area of 5m² at maturity stage of the crop. Collected data were statistically analyzed using a standard statistical procedure and differences among treatments were adjudged by Least Significant Difference (LSD) test.

Source of Information: BRRI Annual Report-1994. Page: 178-180.Farm Management Division,BRRI, Gazipur-1701.Bangladesh.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 10000/-(Ten thousand)

Total Budget (Tk.) : 10000/-(Ten thousand)

Achievement/Findings:

The study was conducted to determine the effect of phosphorous fertilization on Sesbania biomass production and incorporation effect of Sesbania on the succeeding T. Aus and T. Aman rice crops. Phosphorous application showed that no difference on Sesbania plant population , but the application of P had significant beneficial effect on plant height, biomass and nitrogen yield of the GM crop. Biomass production of GM was positively affected by P application while GM incorporation had also positive effect on the succeeding rice crop in respect of grain, straw and total biomass yield of rice. The residual effect of GM on the second subsequent crop (T. Aman) was low resulting lower grain yield and total biomass production of rice.

Knowledge Management: Report/Proceedings