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Study on the Planting Geometry of Chilli + Onion Intercropping System

A. N. M. Mamun
Spices Research Sub-Center, Comilla

D. A. Choudhury
On-Farm Research Division, Bangladesh Agricultural Research Institute, Gazipur 1701

M. M. Hoque
Spices Research Center, Bogra

M. M. Ahmed
On-Farm Research Division, Bangladesh Agricultural Research Institute, Gazipur 1701

Abstract/ Executive Summary:

The experiment was conducted at ARS, Comilla during rabi season of 1996-97 and 1997- 98 to find out the optimum planting geometry for chilli+onion intercropping system. The crops were grown in different row arrangements (1: 1, 2: 1 and 3: 1 ratio) along with their sole crop. Averaged over the year reveals that individual fruit/bulb weight and the yield of crops was influenced significantly due to the different row arrangements of the crops. Individual fruit or bulb weight was significantly reduced with the increase of plant population of the respective crop. Yield of dried chilli and onion was also significantly influenced by different row arrangements but significantly higher yield of chilli and onion was obtained from their respective sole crops. But it was found on the basis of cost-benefit analysis that intercropping onion (75%) + chilli (25%) or onion (67%) + chilli (33%) with row arrangement 3: 1 or 2: 1 was more productive and remunerative with a net return of Tk. 56557 and Tk. 51155/ha and benefit cost ratio 2.09 and 2.04, respectively.

Keywords: Chilli, Onion, Planting geometry, Intercropping

Location: Spices Research Sub-Center, Comilla

Start Date: 00-00-1996

End Date: 00-00-1998

Program Area: Farming System

Commodity: Chilli, Onion

Objectives:

To determine an optimum planting arrangement for chilli + onion intercropping system that may increase total productivity and income of the growers.

Methodology:

The experiment was conducted during the rabi season of 1996-97 and 1997-98 at the Spices Research Sub-Center, Comilla. The experiment was laid out in a Randomized Complete Block design with three replications. Five intercropping treatments 1: 1 = 1 row chilli + 1 row onion (50C : 500), 2:1 = 2 rows chilli + 1 row onion (67C : 330), 3:1 = 3 rows chilli + 1 row onion (75C : 250), 1:2 = 1 row chilli + 2 row onion (33C : 670), 1:3 = 1 row chilli + 3 rows onion (25C : 750) along with sale chilli and sole onion were studied. The unit plant size was 6 m x 3.2 m. Sole chilli was sown in 40 cm apart lines and plant to plant spacing was 40 cm. Sole onion was sown in 20 cm apart lines and plant to plant spacing was 10 cm, In chilli and onion intercroppinq, onion was planted in between two chilli lines. Sole chilli and chilli dominated intercropping system received cowdung, Urea, TSP, MP, Gypsum and ZnO @ 5 ton, 217 kg, 333 kg, 200 kg, 111 kg and 5 kg per hectare, respectively. Half of the cowdung was applied during final land preparation. The remaining half of cowdung and the entire quantity of TSP, ZnO, Gypsum and one third each of Urea and MP were applied during pit preparation. The rest of Urea and MP were applied in two equal splits at 25 and 50 days after transplanting. Sole onion and onion dominated intercropping treatments received cowdung, Urea, TSP, MP and Gypsum @ 10 ton, 260 kg, 200 kg, 150 kg and 111 kg per hectare, respectively. The entire quantity of cowdung, TSP, MP, Gypsum and half of Urea were applied during land preparation. Remaining half of the Urea was applied in two equal splits at 25 and 50 days after transplanting. All required intercultural operations were done as and when necessary. Data collected on plant height, yield and yield contributing characters were analyzed statistically and means were separated by LSD test. Chilli and onion equivalent yields were computed by converting the yields of intercrops into the yields of chilli or onion on the basis of market price of individual crops. Cost and benefit analysis was done for each treatment on a hectare basis.

Source of Information: Bangladesh Agron. J. 1998. 8 (1 & 2): 59-63, ISSN 41013-1922

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Intercropping onion (75%) + chilli (25%) or onion (67%) + chilli (33%) with row arrangement 3: 1 or 2: 1 was more productive and remunerative with a net return of Tk. 56557 and Tk. 51155/ha and benefit cost ratio 2.09 and 2.04, respectively.

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