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Performance of Winter Vegetables in Guava-coconut Based Multistrata Agroforestry System

F. Islam
Department of Agroforestry and Environment, Sher-e-Bangla Agricultural University, Dhaka

K.K. Islam
Department of Agroforestry, Bangladesh Agricultural University, Mymensingh-2202

M.A. Rahim
Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

An experiment was conducted to evaluate the performance of winter vegetables viz. tomato, chilli, carrot, onion, garlic, turnip and french bean under guava-coconut based multistrata system allowing 50% Photosynthetically Active Radiation (PAR) at Fruit Tree Improvement Project (FTIP), Horticulture Department of Bangladesh Agricultural University along with control (100% PAR). Results revealed that significantly vigorous plant growth as well as tallest plants were found (except french bean) under the treatment T₁ (reduced light level), whereas maximum yield per plot and yield per hectare were recorded under full sunlight (T₀) condition. Economic analysis showed that multistrata system gave higher economic return than control (monocrop condition) and chilli was the winter vegetable which gave the maximum economic income (107095 Tk/ha) compared to the others. From this study we can conclude that multistarata production system is economically more feasible than other production systems.

Keywords: Multilayered system, Winter vegetables, Growth parameters, Economic aspect.

Location: Germplasm Centre of Fruit Tree Improvement Project (FTIP), Department of Horticulture, Bangladesh Agricultural University, Mymensingh

Start Date: 00-11-2005

End Date: 00-04-2006

Program Area: Farming System

Commodity: Country bean, Tomato, Garlic, Onion, Mustard, Carrot, Chilli, Coconut, Guava

Objectives:

1. To evaluate the performance of winter vegetables and their economic return under the Guava-Coconut based shaded system in Bangladesh conditions.

Methodology:

The experiment was carried out on the existing Guava + Coconut based multistoried garden at the Germplasm Centre of Fruit Tree Improvement Project (FTIP), Department of Horticulture, Bangladesh Agricultural University, Mymensingh during the period from November 2005 to April 2006. Geographically it is located at 24°75´North latitude and 90°50´East longitude. Two treatments namely T₀ (under full sunlight/open condition) and T₁ (Guava + Coconut based Agroforestry system, severe shade condition) were used to evaluate the performance of seven winter vegetables. Treatment T₁ was a three layered canopy configuration consisted of coconut, Guava and winter vegetables. The winter vegetables were in ground layer, the second layer had Guava plants which were seven years old and were in fruiting condition and coconut occupied the third layer. The spacing between Guava and rows of coconut were 6m × 8 m which permitted 30-50% of light intensity and the spacing between coconuts plants were 8 m × 8 m. The tested vegetables were carrot (Daucus carota L.), turnip (Brassica rapa), tomato (Lycopersicon esculentum), onion (Allium cepa), garlic (Allium sativum), chilli (Capsicum fruitescens) and french bean (Phaseolus vulgaris) which were laid out following the Randomized Complete Block Design with three replications, while the number of vegetables were same in control and other treatment plots . In total 42 plots were set up and individual plot size for vegetables were 4 m × 2.5 m. Adjacent plots and neighboring blocks were separated by 0.5 m and 2 m respectively. Control plots were situated out side the multilayered system. Irrigation, fertilizers and spacing were maintained following at the recommended way of the vegetables production in Bangladesh conditions. Light intensity was measured with the help of “Quantum Sensor”. Three readings were taken from each plot as well as in control plot and the average values showed 35 to 50% PAR penetrated to the multilayered system. Vegetables were harvested in several times; turnip was harvested at 60 days; Onion at 90 days; Carrot at 80 days of planting and continued up to 105 days. Tomato was harvested in several picking when the fruits appeared at yellow to orange color. Garlic was harvested at 120 days after transplanting while chilli harvesting started at 80 days after planting and continued up to 120 days. Finally total yield was converted into the hectare (10,000m²) and calculate the total cost of production of individual vegetables under multistrata system.

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:

Results revealed that significantly vigorous plant growth as well as tallest plants were found (except french bean) under the treatment T₁ (reduced light level), whereas maximum yield per plot and yield per hectare were recorded under full sunlight (T₀) condition. Economic analysis showed that multistrata system gave higher economic return than control (monocrop condition) and chilli was the winter vegetable which gave the maximum economic income (107095 Tk/ha) compared to the others. From this study we can conclude that multistarata production system is economically more feasible than other production systems.

Knowledge Management: Journal