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Performance of Multipurpose Trees and Field Crops Under Different Management Practices in an Agroforestry System

K C Roy
RDRS, Rangpur

M S Zaman
RDRS, Rangpur

M A Salam
OFRD, Barind station, BARI, Rajshahi

M I Hossain
Wheat Research Center, BARI, Rajshahi, Bangladesh

M Shahjahan
OFRD, Barind station, BARI, Rajshahi

Abstract/ Executive Summary:

The research work was conducted to evaluate crop yield and tree growth as affected by tree species and pruning management in an agroforestry system. Three multipurpose tree species (Albizia lebbek, Eucalyptus camaldulensis and Azdirachta indica and live management practices involving three pruning management (Root pruned, Shoot pruned and Root + shoot pruned), one unpruned treatment (control) and open field (No tree but crop only) was used. Biomass; yield (t ha^-1) of wheat was significantly more in A. indica plot over other two species. But grain and straw yields (t ha^-1) of rice were significantly higher in E. camaldulensis plot as compared to other two species. A. lebbek plot had lower yield for both the crops. Crop yield (grain and straw) of wheat was significantly higher in root plus shoot pruned plot than those in other pruning management. Open lield systems performed better in yield than that of root and shoot pruned. Comparative study of three tree species showed that E. camaldulensis attained the highest height and breast diameter growth while A. lebbek showed the highest fuel wood and green leaves. The overall results imply that A. indica can be compatible with wheat and E. camaldulensis with rice under irrigated condition if both root and shoot are pruned periodically and green biomass be incorporated in the soil.

Keywords: Multipurpose, Pruning, Biomass, Breast diameter, Management, Yield

Location: Sainagar, Dinajpur

Start Date: 01-08-1995

End Date: 30-11-1996

Program Area: Farming System

Commodity: Tree

Objectives:

To study the performance of three multipurpose tree species and two crops (rice and wheat) as affected by management practices.

Methodology:

The field experiment was conducted at Sainagar, Dinajpur during the period from October 1995 to November 1996 utilizing 8- years old three multipurpose tree species under high land irrigated condition. The experimental area was high land of sandy loam soils and belongs to the Sonatola series of Tista flood plain soil under Agro Ecological zone 3. The experiment was laid out in a factorial Randomized Complete Block Design with three replications. The factor A consisted of three multipurpose tree species 1. Albizia lebbek, 2. Eucalyptus camaldulensis and 3. Azadirachta indica and factor B consisted of 5 management practices involving three pruning management. 1. Root pruned 2. Shoot pruned 3. Root + shoot pruned, 4. One un pruned treatment (control) and 5. Open field (No tree but only crop). The open fields were free from the shading effect of the tree species. All plots including the control received wheat- rice cropping pattern. The tree species had been established during 1987 in Sainagar, Dinajpur, Bangladesh by the Community Development Association (CDA- a local NGO) under funding of Swiss Development Cooperation (SDC). The trees were planted at a spacing of 8 x 8 m². The land was prepared by ploughing and harrowing five times by country plough and harrow, respectively. Wheat (Var. Kanchan) seeds were broadcasted at 120 kg ha^-1 in 1 0 November 1995. Fertilizers were applied at the rate of 1 00- 80- 60 kg N, P and K ha^-1. During land preparation, 50 kg N and all P (80) and K (60) were applied. After 20 days rest of N were applied. The rice (Var. BR-11) seedlings were transplanted at the onset of rains on August 15 1996. Seedlings were planted in rows 25 cm apart. Wheat and rice were harvested immediately after the physiological maturity during late March and mid November, respectively. First and second data of tree height and diameter were collected on 30 October 1995 and 30 October 1996, respectively. Recorded data were analyzed statistically using" Analysis of variance (ANOVA)" of Randomized Complete Block Design (RCBD) with factorial arrangements of treatments. The means were separated by Duncan's Multiple Range Test.

Source of Information: JOURNAL OF BIO-SCIENCE, THE INSTITUTE OF BIOLOGICAL SCIENCES RAJSHAHI UNIVERSITY, Vol. 13, 2005, pp. 101-107, ISSN 1023–8654.

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The overall results imply that A. indica can be compatible with wheat and E. camaldulensis with rice under irrigated condition if both root and shoot are pruned periodically and green leaves biomass be incorporated into soils before wheat and rice cultivation.

Knowledge Management: Journal