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Tree Crop Interface Study at Varying Levels of Tree Densities at Gazipur

M A Rahman
Agronomy Division, BARI, Gazipur1701.

M F Haq
Agronomy Division, BARI, Gazipur1701.

M S A Khan
Agronomy Division, BARI, Gazipur1701

M A Karim
Agronomy Division, BARI, Gazipur 1701.

M A Quiyyum
Agronomy Division, BARI, Gazipur 1701.

M Nazrul Islam
Agronomy Division, BARI, Gazipur1701.

Abstract/ Executive Summary:

The experiment was conducted at the central research farm of the Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during 1996 to 2000 under rainfed situation. Two tree species Acacia auriculiormis and Dalbergia Siggoo were planted separately at 4 x 6 m (416 plants/ha), 8 x 10 m (125 plants/ha), 12 x 14 m (60 plants/ha) spacing in RCB design with three replications during kharif II seasons of 1996. B.aus-Black gram- Wheat cropping pattern was introduced in the tree plantation. Crops were grown with their recommended inputs. There was no significant difference in plant height dry matter and collar diameter of two tree species. Mean aus rice yields of two years (1998-2000) reduced 11-24% under trees. Accordingly black gram and wheat yield reduced 12-23 and 17-27% due to plant species and spacing. About 63% more income was achieved from tree and crop combined plots over sole crop.

Keywords: Crop growth, Yield,Tree, Agroforestry, Economics

Location: Central research station,Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

Start Date: 01-07-1996

End Date: 30-05-2000

Program Area: Farming System

Non-commodity: Performance

Objectives:

To study the tree and crop growth and their yield and the economics of the stated agro-forestry model.

Methodology:

The experiment was initiated in kharif II 1996 at the central research station, BARI, Joydebpur, Gazipur. Two tree species Akashmoni (Acacia auriculiformis) and Sissoo (Dalbergia sissoo) were planted after through land and pit preparation during July. The trees were planted at three spacing, 4 x 6 m (416 plants/ha), 8 x 10 m (125 plants/ha) and 12 x 14 m (60 plants/ha). The design followed was factorial randomized block replicated three times. Hence, there were six treatment combinations with a control plot (without tree) for comparison. The unit plot size was 24 x 28 m. Cropping pattern B. aus -Rice- Blackgram - Wheat was imposed in the tree species and spacing. Primarily local aus rice during kharif-l (Mid March-July) and then HYV rice was chosen. After harvest of rice, blackgram was sown during August and then wheat was grown in thorough prepared land in November/December. Recommended fertilizers were used for the crops. Trees were nourished with 100-50-5- g/plant Urea- TSP-MP at planting and every year just after rainy season. Weeds were removed from the base of the trees and covered with trushes during dry season. Green blackgram was incorporated with soil before wheat. Plant height and collar diameter at 30 cm above the ground was taken at 180 days interval. The yields record along with yield attributes were maintained for every crop.

Source of Information: Proceedings of a national workshop held September 16-17 2001 in Gazipur, Bangladesh

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

There was no significant difference in plant height dry matter and collar diameter of two tree species. Mean aus rice yields of two years (1998-2000) reduced 11-24% under trees. Accordingly black gram and wheat yield reduced 12-23 and 17-27% due to plant species and spacing. About 63% more income was achieved from tree and crop combined plots over sole crop.The upland area Acacia auriculiformis and Dalberqia sissoo may be grown in the crop field in wider spacing. Dalbergia sissoo's growth is comparatively slow and crops can be grown in the tree spaces without shading for a long period.

Knowledge Management: Report/Proceedings