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Performance of Three Winter Vegetables in Association with Telsur (hopea Odorata)

M.S. Islam
Department of Agroforestry, Bangladesh Agricultural University, Mymensingh

M.A. Wadud
Department of Agroforestry, Bangladesh Agricultural University, Mymensingh

M.K. Hasan
Department of Agroforestry, Bangladesh Agricultural University, Mymensingh

M.M. Rahman
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh

G.M.M. Rahman
Department of Agroforestry, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

The experiment was carried out at the Agroforestry Farm, Department of Agroforestry, Bangladesh Agricultural University, Mymensingh, during November 2008 to March 2009 to evaluate the performance of three winter vegetables grown under Hopea odorata at different distances. The vegetables were stem amaranth (Amaranthus lividus), red amaranth (Amaranthus gangeticus) and coriander (Coriandrum sativum). Each vegetable were laid out using the Randomized Complete Block Design (RCBD) with three replications as separate experiment. In each experiment vegetables are grown at different distance from tree base which were treated as different treatment. Performance of winter vegetables in terms of morphological parameters as well as fresh and dry yield was affected significantly by distance from the tree. The result showed that vegetable production was the highest in control (without tree) which was significantly similar with 2, 3 and 4 feet distance from the tree base and the lowest was observed under 1 feet distance. Among the different morphological characteristics of winter vegetable, standard leaf length, standard leaf diameter, stem girth, fresh weight and dry weight decreased consistently with the decrease of distance from the tree where the best result was obtained under 4 feet distance from Hopea odorata. The growth characteristics of Hopea odorata was significantly influenced by all the three winter vegetables. The highest growth was recorded in control condition which was statistically similar with red amaranth and coriander combination. The lowest tree growth was found under the combination of tree-stem amaranth, which is different from other.

Keywords: Hopea odorata, Winter vegetables, Agroforestry, Interactions

Location: Agroforestry Farm, Department of Agroforestry, Bangladesh Agricultural University, Mymensingh

Start Date: 00-11-2008

End Date: 00-03-2009

Program Area: Farming System

Commodity: Tree, Vegetables

Objectives:

1. To observe the morphological behaviors and evaluate yield and yield attributes of the selected vegetables are grown under Hopea odorata for selecting suitable winter vegetables in agroforestry system.

Methodology:

The experiment was carried out at the experimental farm, Department of Agroforestry, Bangladesh Agricultural University, Mymensingh during the period from November, 2008 to March, 2009. The experimental site is geographically located at about 24º75´ North latitude and 90º50´ East longitudes. In this study three winter vegetables, such as: Red amaranth (Amaranthus gangeticus) Stem amaranth (Amaranthus lividus), Coriander (Coriandrum sativum) were grown in association with 8 months old Telsur (Hopea odorata) saplings. Each vegetable were laid using the Randomized Complete Block Design (RCBD) with three replications as separate experiment. Individual plot size was 9ft x 2ft. In each experiment vegetables are grown at different distance from tree base which were treated as treatment. For each experiment treatments were as; T₀ = Open field (without trees) - control; T₁ = 1 feet distance from the tree; T₂ = 2 feet distance from the tree; T₃ = 3 feet distance from the tree; T₄ = 4 feet distance from the tree. Hopea odorata Saplings also grown without vegetables association as control. After land preparation red amaranth & stem amaranth seeds were directly sown in the experimental plot on 20th November 2008. Coriander seeds were sown in the experimental plot on 27th November 2008 by line sowing method at a depth of 0.03-0.05 ft maintaining the spacing of 0.02 x0.02 ft from plant to plant. Necessary cultural operations were done for all vegetables. Plant samples of red amaranth, stem amaranth & coriander were collected randomly from the respective plots. Twenty plants of red amaranth, ten plants of stem amaranth & twenty plant samples of coriander were selected from each plot for data collection. Plant height (cm), stem girth (cm), no. of leaves per plant, leaf length (cm) and fresh weight plant^-1 (g) were recorded from selected plnats of respective vegetables. Yields of all vegetables calculated from the fresh weight per plants as t/ha. Height (cm), girth (cm), leaf size (cm²) and number of leaves per Hopea odorata saplings also measured during the harvesting period of vegetables. Data regarding various parameters under study from the experiment were statistically analyzed by the computer using statistical package programme MSTAT-C. Mean comparisons were done by DMRT (Duncan's Multiple Range Test) at 5% level of significance.

Source of Information: J. Agrofor. Environ. 3 (1): 73-76, 2009; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Yield of all vegetables were significantly lower with in the 1-2 feet distance from tree base i. e., during the first year of Hopea odorata plantation all three vegetables can be grown successfully more than 2 feet distance from tree base. Hopea odorata growth was comparatively lower in association with stem amaranth than others i. e., red amaranth and coriander can be successfully grown in association with Hopea odorata plantation during early establishment period.

Knowledge Management: Journal