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Suitability Study of Local Bush Bean Cultivars Intercropped with Hybrid Maize Under Different Planting System in Hilly Areas

M. Shaheenuzzamn
Scientific Officer
Agronomy Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur,

N. Chakma
Scientific Officer
Hill Agricultural Research Station Khagrachari

A. Biswas
Scientific Officer,
Regional Agricultural Research Station Jessore

M. N. Islam
Principal Scientific Officer
Agronomy Division, BARI, Joydebpur, Gazipur

M. Salim
Scientific Officer
Hill Agricultural Research Station, BARI' Khagrachari Hill District, Bangladesh.

Abstract/ Executive Summary:

An intercropping experiment was conducted on hill valley at Hill Agricultural Research Station, Ramgarh and Kharachari during two consecutive rabi seasons of 2012-13 and 2013-14 to select suitable local bush bean cultivar for intercropping with hybrid maize in hilly areas of Bangladesh. Seven intercropping treatments viz., T₁ = Normal maize spacing (75 cm x 25 cm) + 2 rows black seeded bush bean, T₂ = Normal maize spacing (75 cm x 25 cm) + 2 rows pink seeded bush bean.T₃ = Maize wider spacing (100 cm x 25 cm) with 1 plant/hill + 3 rows black seeded bush bean.T₄ = Maize wider spacing (l00 cm x 25 cm) with 1 plant/hill + 3 rows pink seeded bush bean, T₅ = Maize wider spacing (100 cm x 50 em) with 2 plants/hill + 3 rows black seeded bush bean, T₆ = Maize wider spacing (100 cm x 50 cm) with 2 plants/hill + 3 rows pink seeded bush bean and T₇ = Sole maize spacing (75 cm x 25 cm) were used. Sole hybrid maize produced the highest grain yield at both the locations. Bush bean cultivars in intercropped situation depressed hybrid maize yields by 7.15-37.29% at Ramgarh and 2.56-37.5 I % at Khagrachari compared to sale hybrid maize. The highest maize equivalent yield of 23.10 t/ha at Ramgarh and 24.08 t/ha at Khagrachari was recorded in maize wider spacing (100 cm x 25 em) with I plant/hill + 3 rows pink seeded bush bean combination (T4). The same treatment also showed the highest gross return (Tk 277200/ha at Ramgarh and Tk 288960/ha at Khagrachari), gross margin (Tk 180050/ha at Ramgarh and Tk 191810/ha at Khagrachari) and benefit cost ratio (2.85 at Ramgarh and 2.97 at Khagrachari). The result revealed that maize wider spacing (l00 cm x 25 cm) with 1 plant/hill + 3 rows pink seeded bush bean could be suitable and economically profitable for hybrid maize and bush bean intercropping in hill valleys of Bangladesh.

Keywords: Suitability, Intercropping, Hybrid maize, Bush bean, Hilly areas.

Location: Hill Agricultural Research Station, Ramgarh and Khagrachari.

Start Date: 00-00-2012

End Date: 00-00-2014

Program Area: Farming System

Non-commodity: Adoption of technology

Objectives:

To find out the local bush bean cultivars suitable for intercropping with hybrid maize under different planting systems.

Methodology:

The experiment was conducted on hill valley at Hill Agricultural Research Station, Ramgarh and Khagrachari during two consecutive rabi seasons of 2012- 13 and 2013-14. The soil of the experimental field of Khagrachari was clay loam in texture with pH 4.6, medium in organic matter (2.51 %), low in total nitrogen (0.132%), very high in phosphorus (34µg/g), low in potassium (0.12 meq/100g), optimum in sulphur (29 µg/g), medium in zinc (1.27 µg/g) content belonging to Mirersharai series under AEZ-29. On the contrary, the soil of the experimental field of Ramgarh was clay loam in texture with pH 4.5, medium in organic matter (2.36%), low in total nitrogen (0.130%), very low in phosphorus (4 µg/g), low in potassium (0.11 meq/100g), low in sulphur (17 µg/g), low in zinc (0.57 µg/g) content belonging to Mirersharai series under AEZ-29. Seven intercropping treatments viz., T₁ = Normal maize spacing (75 cm x 25 cm) + 2 rows black seeded bush bean, T₂ = Normal maize spacing (75 cm x 25 cm) + 2 rows pink seeded bush bean.T₃ = Maize wider spacing (100 cm x 25 cm) with 1 plant/hill + 3 rows black seeded bush bean.T₄ = Maize wider spacing (l00 cm x 25 cm) with 1 plant/hill + 3 rows pink seeded bush bean, T₅ = Maize wider spacing (100 cm x 50 cm) with 2 plants/hill + 3 rows black seeded bush bean, T₆ = Maize wider spacing (100 cm x 50 cm) with 2 plants/hill + 3 rows pink seeded bush bean and T₇ = Sole maize spacing (75 cm x 25 cm) were used in this study. The experiment was laid out in a randomized complete block design with three replications. The unit plot size was 3 m x 3 m. Hybrid maize (var. BARI Hybrid maize-7) and bush bean cultivars (Black seeded and pink seeded) were used in this experiment. Seed rate of bush bean was considered as 36 kg/ha. Seeds of maize and bush bean were sown on 24 November 2012 and 25 November 2013 in both the location according to treatments. Sale hybrid maize and intercrop was grown with 250-55-110-40-4-2 kg/ha of NPKSZnB. Fifty percent N and full amount of all other fertilizers were applied as basal. Remaining N was applied as top dressing at 30 days after sowing (DAS). Two irrigations were given at 30 and 60 DAS. Other intercultural operations were done as and when required. Plant population of both the crops was taken in linear metre from randomly selected 3 places in each plot and converted to plants/m². Data on yield components of maize and bush bean were taken from randomly selected 5 plants from each plot. Hybrid maize was harvested at 150 DAS in both years and locations. Harvesting of bush bean pods was started from 100 DAS and continued up to 110 DAS in both years and locations. The mean comparisons were done by using Least Significant Difference (LSD) test. Cost of land preparation, seeds, fertilizers, labour for different operations and irrigation etc. were considered as production cost. Benefit cost analysis was also done. Maize equivalent yield was computed by converting the yield of intercrops on the basis of prevailing market price of both the crops.

Source of Information: Bangladesh J. Agril. Res. 40(2): 325-332, June 2015, ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results revealed that maize wider spacing (l00 cm x 25 cm) with 1 plant/hill + 3 rows pink seeded bush bean might be suitable and economically profitable for hill valleys of Bangladesh. So, the farmers of hilly areas could be suggested to grow pink seeded bush bean cultivar as intercrop with hybrid maize for getting maximum profit.

Knowledge Management: Journal