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Organic Production of Eggplant in Multistoried Agroforestry System

M.M.U. Miah
Department of Agroforestry, Hajee Mohammad Danesh Science and Technology University, Dinajpur

M.S. Rahman
Department of Agroforestry, Hajee Mohammad Danesh Science and Technology University, Dinajpur

M.A. Hakim
Department of Agricultural Chemistry and Bio-chemistry, Hajee Mohammad Danesh Science and Technology University, Dinajpur

M.H.A. Amin
Department of Agroforestry, Hajee Mohammad Danesh Science and Technology University, Dinajpur

M.Z. Rahman
Department of Agroforestry, Hajee Mohammad Danesh Science and Technology University, Dinajpur

Abstract/ Executive Summary:

A field experiment was conducted at the Agroforestry Farm, Hajee Mohammad Danesh Science and Technology University, Dinajpur during October 2006 to March 2007 to evaluate the performance of an eggplant variety (Kajla) as the lower storey crop in multistoried agroforestry system. The treatments were Mehogony-cane, Deshi neem-cane and Eucalyptus-cane base agroforestry system. The trees were used as the upper storey; there was also a middle storey cane species and one control (open field) treatment. Significantly the longest plant (96.00 cm at 150 DAP) was found under Eucalyptus with cane followed by Deshi neem with cane. The shortest plant (79.00 cm at 150 DAP) was found in open field. On the other hand, the values of all other growth and yield contributing characters found highest in open field followed by Mehogony with cane and the lowest values were found in Eucalyptus with cane. The highest fruit yield was recorded in open field (92.24 t ha^-1) followed by Mehogony with cane (72.08 t ha^-1). A total of 10-15% fruits were found infested by fruit borer and this yield loss may be due to organic production. Open field always ensured the maximum yield but potentiality of other treatments may be ranked as Mehogony-cane > Deshi Neem-cane > Eucalyptus-cane.

Keywords: Organic production, Eggplant, Multistoried Agroforestry systems.

Location: Agroforestry Research Farm, Hajee Mohammad Danesh Science and Technology University, Dinajpur

Start Date: 00-10-2006

End Date: 00-03-2007

Program Area: Farming System

Commodity: Mehogani, Brinjal

Objectives:

1. To evaluate the performance of eggplant grown as the lower storey crop in multustoried agroforestry system.

Methodology:

The cane based Agroforestry field is a young orchard of three multipurpose tree species namely Swietenia macrophylla (Mehogony), Azadirachta indica (Deshi neem) and Eucalyptus camaldulensis (Eucalyptus). The tree saplings were planted in three blocks at the spacing 3m×3m in the year 2004.The tree block was separated by 5 m. Cane species were planted in the middle of two tree species in north-south direction in August 2005, which formed middle storey. Between two lines of MPTs (in the alley) 3 m x 2.5 m plots are made for lower storey crop production. There were 5 plots for eggplant in each alley. There were 5 control plots in open field for eggplant. Hence, the experiment was conducted following single factor RCBD with 5 replications, which comprises 4 treatments i.e. Mehogony-cane, Deshi neem-cane, Eucalyptus-cane and open field. The test variety of eggplant was Kajla which was reported more tolerant than Nayantara and Uttara in artificial shade. Eggplant seedlings were planted in the plots maintaining 50 cm x 40 cm distances. Cow dung @ of 20 t ha^-1 in 3 splits, 50% during the final land preparation and rest was applied twice equally at 30 and 60 DAP. Weeding was done periodically when ever necessary. Light irrigation was given just after transplanting. However, heavy irrigation was given twice; at 40 and 80 DAP, respectively. No chemical fertilizer and pesticides were used as it was also an attempt to produce eggplant in organic basis. Fruit borer and bacterial wilt affected plants were removed from each plot. After all, 10-15%, fruits of eggplant were found infested by the fruit borer. For data collection, 10 representative sample plants (eggplant) were selected and evaluated for growth parameters. The fruits of eggplant were plucked from the selected plants when they reached at the edible size or become matured and data for yield contributing characters were recorded. Data were analyzed with the help of MSTAT computer package program. The mean differences were adjusted by the Duncan’s Multiple Range Test (DMRT).

Source of Information: J. Agrofor. Environ. 1(2): 77-80, 2007; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The highest fruit yield was recorded in open field (92.24 t ha^-1) followed by Mehogony with cane (72.08 t ha^-1). A total of 10-15% fruits were found infested by fruit borer and this yield loss may be due to organic production. Open field always ensured the maximum yield but potentiality of other treatments may be ranked as Mehogony-cane > Deshi Neem-cane > Eucalyptus-cane.

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