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Performance of Radish and Coriander Under Six Years Old Lohakat Tree

P. Sarker
Department of Agroforestry, Bangladesh Agricultural University, Mymensingh-2202

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

I. Roy
Department of Agroforestry, Bangladesh Agricultural University, Mymensingh-2202

G.M.M Rahman
Department of Agroforestry, Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

A field experiment was conducted at the Agroforestry Farm of Bangladesh Agricultural University, Mymensingh, during the period from 01 November 2013 to 10 January 2014 with the aim of evaluating the growth performance of radish (Raphanus sativus) and coriander (Coriandrum sativum) grown under 6 years old lohakat (Xylia dolabriformis) tree saplings at 4 different distances viz. open field, 0-0.5m, 0.5-1.0m and 1.0-1.5m distant from tree sapling bases. The experimental design was Randomized Complete Block Design (RCBD) with three replications. The individual plot was “6m x 2m” and each plot contains two lohakat tree maintaining 3m distance from one to another. The result shows that growth and yield of radish and coriander in association with lohakat tree was significantly decreased with decreasing distance from tree base and the variation was very wide near the lohakat tree base compare to open field condition. For radish morphological and yield contributing characters were observed at 15 Days After Emergence (DAE), preharvesting stage and harvesting stage. The result showed that morphological characteristics viz. plant height, no. of leaves per plant, leaf length, leaf breadth, leaf size, root length, root length, root diameter and root weight per plant of radish was less vigorous near the lohakat tree base. Yield of radish was highest in open field condition which was 25.43 t/ha where 9.79, 47.77 and 79.82 % lower yield found in 1.0-1.5m, 0.5-1.0m and 0-0.5m distance area from lohakat tree base, respectively. For coriander morphological and yield contributing characters were observed at 20 DAE and harvesting stage. The result showed that morphological and yield contributing characteristics viz. plant height, no. of leaves per plant, leaf length, leaf breadth, leaf size and fresh weight per 7 plants of coriander in association with lohakat tree were remarkably vigorous in distant area from lohakat tree. Yield of coriander was also highest in open field condition which was 2.92 t/ha which was almost identical in the area 1.0-1.5m from tree base which was 2.33 t/ha. Yield significantly reduced in the near area of lohakat tree and it was 59.93 and 77.05% lower in 0.5-1.0m and 0-0.5m distance area from lohakat tree base, respectively.

Keywords: Radish, Coriander, Lohakat, Agroforestry system

Location: Agroforestry Farm of Bangladesh Agricultural University, Mymensingh

Start Date: 01-11-2013

End Date: 10-01-2014

Program Area: Farming System

Commodity: Lohakat, Coriander, Radish

Objectives:

1. To examine the performance of radish and coriander under different distance from Lohakat tree base in agroforestry systems.

Methodology:

Study site: The experiment was carried out at the Experimental Farm, Department of Agroforestry, Bangladesh Agricultural University, Mymensingh, during the period from 01 November 2013 to 12 January 2014. The place is geographically located at about 24°75" North latitude and 90°50' East longitude. Tree and plant materials: In this study six years old tree of Lohakat (Xylia dolabriformis) was used as tree component which was planted in the study plots six years ago i.e., in the year of 2008. The seeds of radish and coriander were purchased from BADC seed centre, which were used as herbaceous plant materials in this study. Tree establishment and management: For the period of field experiment, Lohakat tree were well established and average height and girth of Lohakat trees were 7.2m and 0.3 m, respectively. At first soils at the base of tree were loosening very well and make friable. Weeds were removed from the tree base; insect infested leaves were also removed. Irrigation was applied at the base of the tree. Irrigation was done two times in a day by the watering cane. The trees were pruned before final land preparation. So radish and coriander plants get the sunlight directly. It enhances the growth of radish and coriander plants. Experimental design and treatment combination: The experimental design was Randomized Complete Block Design with three replications. Three plots each of were laid around the tree three tree-crop distance treatments were used. These are: T_o=Open field referred to as control, T₁ =0- 0.5m distance from the tree base, T₂= 0.5 - 1.0m distance from the tree base and T₃= 1.0 – 1.5m distance from the tree base. Land preparation: The experimental land was first opened on 1 November, 2014 and the operation was done by spade. Then the land was fallow for few days. All crop residues and weeds were removed from the field and finally the land was properly leveled. Crop establishment and management: Radish and coriander seeds were directly sown in the experimental plot on 14 November 2014. The radish seeds were sown in line sowing and the coriander seeds were sown in broadcasting. After emergence finally radish and coriander plants were thinned out. Management practices: Different management practices viz. fertilization, irrigation and weeding, earthing up, thinning out and gap filling, pest and disease management were done for better growth of radish and fertilization, irrigation and weeding, thinning out were done for coriander. Data collection Radish: Plant samples of radish were collected randomly from the respective plots. Three radish plants were selected from each plot for data collection. Data were collected at 15 days after emergence, at pre-harvesting stage and during harvesting time for measuring plant height (cm), number of leaves per plant, leaves length, leaves breadth (cm), root length (cm), root diameter (cm), root weight per plant (g). Coriander: Plant samples of coriander were collected randomly from all the respective plots. Seven plants of coriander were selected from each plot for data collection. Data were collected at 20 days after emergence and at harvesting stage. The following plant characters of were recorded for coriander, Plant height (cm), number of leaves per plant, leaves length, leaves breadth (cm), leaf size, fresh weight (gm). Data analysis: Data regarding various parameters under study for the experiment were statistically analyzed by the computer using statistical package programmed WASP-2. The mean differences were evaluated by Duncan’s New Multiple Range Test (DMRT) and also by Least Significant Difference (LSD) test.

Source of Information: J. Agrofor. Environ. 8 (1): 63-66, 2014;ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The result showed that morphological characteristics viz. plant height, no. of leaves per plant, leaf length, leaf breadth, leaf size, root length, root length, root diameter and root weight per plant of radish was less vigorous near the lohakat tree base. Yield of radish was highest in open field condition which was 25.43 t/ha where 9.79, 47.77 and 79.82 % lower yield found in 1.0-1.5m, 0.5-1.0m and 0-0.5m distance area from lohakat tree base, respectively. For coriander morphological and yield contributing characters were observed at 20 DAE and harvesting stage. The result showed that morphological and yield contributing characteristics viz. plant height, no. of leaves per plant, leaf length, leaf breadth, leaf size and fresh weight per 7 plants of coriander in association with lohakat tree were remarkably vigorous in distant area from lohakat tree. Yield of coriander was also highest in open field condition which was 2.92 t/ha which was almost identical in the area 1.0-1.5m from tree base which was 2.33 t/ha. Yield significantly reduced in the near area of lohakat tree and it was 59.93 and 77.05% lower in 0.5-1.0m and 0-0.5m distance area from lohakat tree base, respectively.

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