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Intercropping French Bean with Brinjal at Varying Planting System

JA Chowdhury
Senior Scientific Officer
Agronomy Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur 1701, Bangladesh

Md Mahfuz Bazzaz
Agricultural Research Station, Bangladesh Agricultural Research Institute, Rajbari, Dinajpur, Bangladesh

SS Kakon
Senior Scientific Officer
Agronomy Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur 1701, Bangladesh

AA Begum
Senior Scientific Officer
Agronomy Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur 1701, Bangladesh

Most Mahbuba Khanum
Agricultural Research Station, Bangladesh Agricultural Research Institute, Rajbari, Dinajpur, Bangladesh

Abstract/ Executive Summary:

The experiment was carried out at the research field of Agricultural Research Station, Rajbari, Dinajpur during rabi season of 2014-15 and 2015-16 to find out suitable crop combination for higher productivity and economic return. Six different treatments viz. T₁= Sole brinjal (75 cm x 60 cm), T₂= Sole french bean (30 cm x 10 cm), T₃= Brinjal normal row (100%) + 1 line french bean between brinjal (33%), T₄= Brinjal normal row (100%) + 2 lines french bean between brinjal (66%), T₅= Brinjal paired row (100%) + 3 lines french bean between brinjal (40%) and T₆= Brinjal paired row (100%) + 4 lines french bean between brinjal (53%) were evaluated. The results revealed that the highest mean fruit yield of brinjal (44.26 t ha^-1) and french bean (20.96 t ha^-1) was obtained in sole cropping of component crops. Under intercropping, the highest brinjal yield (38.61 t ha^-1) was recorded in brinjal normal row + 1 line french bean between brinjal, while, the highest french bean yield (16.06 t ha^-1) in brinjal normal row + 2 lines french bean between brinjal. The highest mean brinjal equivalent yield (58.72 t ha^-1) and land equivalent ratio (1.50) was also obtained in brinjal normal row + 2 lines french bean between brinjal. The highest gross return (Tk. 4,69,760 ha^-1), gross margin (Tk. 3,66,440 ha^-1), and BCR (4.54) were obtained in brinjal normal row + 2 lines french bean between brinjal and the lowest in sole french bean. The overall results indicated that among the intercrop combinations brinjal normal row + 2 lines french bean between brinjal was found suitable for total productivity and economic return of the system.

Keywords: Intercropping, French bean, Brinjal, Planting system, Farming system

Location: Agricultural Research Station, Rajbari, BARI, Dinajpur

Start Date: 00-00-2014

End Date: 00-00-2016

Program Area: Farming System

Commodity: Brinjal, French bean

Objectives:

To find out suitable crop combination of brinjal with french bean for higher productivity and economic return.

Methodology:

The experiment was conducted at the research field of Agricultural Research Station, Rajbari, Dinajpur during rabi season of 2014-15 and 2015-16. Six different treatments were employed in this study viz. T₁ = Sole brinjal (75 cm x 60 cm), T₂ = Sole french bean (30 cm x 10 cm ), T₃ = Brinjal normal row (100%) + 1 line french bean between brinjal (33%), T₄ = Brinjal normal row (100%) + 2 lines french bean between brinjal (66%), T₅ = Brinjal paired row (100%) + 3 lines french bean between brinjal (40%) and T₆ = Brinjal paired row (100%) + 4 lines french bean between brinjal (53%). The experiment was laid out in randomized complete block (RCB) design with three replications. The unit plot size was 4.5 m x 3.0 m. The land of the experimental plot was prepared into good tilth. Fertilizers were applied @ 160-48-120-20-3-0.9 kg ha^-1 N-P-K-S- Zn-B for both the sole brinjal and intercrop combinations. Except N and K, full amount of all other fertilizers were applied in pit before 1 week of transplantation. N and K was applied in 3 equal splits at 21, 35 and 50 DAT in brinjal as ring method followed by irrigation. Under intercropping situation no additional fertilizer was applied for french bean. But in sole french bean, fertilizers were applied @ 120-40-60-12-3 kg ha^-1 N-P-K-S-Zn, respectively. Half of N and full amount of other fertilizers were applied at final land preparation and the rest N was top dressed at 35 days after sowing (DAS). Thirty days old seedlings of brinjal was transplanted on 20 November 2014 and 08 November 2015, respectively and french bean was sown 10 days after planting of brinjal in line according to the treatment combinations. Seeds of BARI Begun-10 and BARI Jharsheem-2 were used in both the years. Intercultural operations like watering, weeding and pest control were done as and when required. First harvesting of brinjal was done at 119 DAP (Days After Planting) and the harvesting was continued up to 208 DAP. French bean was harvested three times at 87, 98 and 115 DAS. Yield components of brinjal and french bean were taken from randomly selected 10 plants from each plot. Yields of both the crops were taken from whole plot. Treatments were compared in terms of land equivalent ratio and % land save using the formula developed by Willey (1985). Collected data of all crops were analyzed statistically by using MSTAT software packages and mean differences for each character were compared by Least Significant Difference (LSD) test (Gomez and Gomez 1984). Brinjal equivalent yields (BEY) were computed.

Source of Information: Bangladesh Agron. J. 2018, 21(2): 1-6

Article Link (Online Journal): DOI: https://doi.org/10.3329/baj.v21i2.44485

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The overall results indicated that among the intercrop combinations brinjal normal row + 2 lines french bean (30 cm x 10 cm) between brinjal was found suitable for total productivity and economic return of the system.

Knowledge Management: Journal