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Hybrid Maize + Sweet Potato Intercropping Under Different Planting Systems in the Hilly Areas

M.N. Islam
PSO
Agronomy Division, Gazipur

M. A. Hossain
CSO
Agronomy Division, Gazipur

Abstract/ Executive Summary:

An intercropping experiment was conducted at the Hill Agricultural Research Station, Khagrachari during rabi season of 2010-11 to find out the suitable planting system of hybrid maize-sweet potato intercropping. Three intercropping combinations viz., maize paired row + 2 rows sweet potato (100% HM: 40% SP), maize normal row +1 row sweet potato (100% HM: 60% SP) and sweet potato normal row + 1 row maize after 2 rows sweet potato (100% SP: 50%HM) were evaluated against their sole crops. Cob yield of hybrid maize and tuber yield of sweet potato was the highest in respective sole crops. The highest cob equivalent yield (25.43 t/ha) was found in maize normal row +1 row sweet potato (100% HM: 60% SP) i.e T4. The highest gross return (Tk 127150 /ha), gross margin (Tk.87130/ha) and benefit cost ratio (3.18) were recorded in the same combination. The results revealed that maize normal row +1 row sweet potato (100% HM: 60% SP) combination might be suitable and profitable for the hill valley of Khagrachari.

Keywords: Hybrid maize+Sweet potato intercropping, Planting systems, Hilly areas

Location: ARS, Khagrachari

Start Date: 00-00-2010

End Date: 00-00-2011

Program Area: Farming System

Commodity: Maize, Sweet potato

Objectives:

To find out the suitable planting system of hybrid maize-sweet potato intercropping.

Methodology:

The experiment was conducted at the Hill Agricultural Research Station, Khagrachari during rabi season of 2010-11. The experiment was laid out in a randomized complete block design with five replications. The unit plot size was 4.5 m x 4.5 m. The hybrid maize (var. BARI hybrid maize 5) and sweet potato (BARI Mishtialu-7) were used in this intercropping experiment. Seeds of maize and vines of sweet potato were sown/ planted on December 07, 2010 according to treatments. Sole hybrid maize and intercropping treatments were fertilized with 260-55-110-40-4-1 kg/ha NPKSZnB while sole sweet potato was grown with 100-40-100-10-1 kg/ha NPKSZn. The full amount of P K S Zn B and 1/3 N were applied as basal in the form of triple super phosphate, muriate of potash, gypsum, zinc sulphate, boric acid and urea, respectively. The remaining N was top dressed in two equal splits at 30 and 60 days after sowing (DAS). Irrigation was given after sowing/planting for proper establishment of crops. Subsequently three irrigations were applied at 30, 60 and 90 DAS. Two hand weeding were given at 20 and 40 DAS to keep the crops reasonably weed free. Data of maize and sweet potato were taken from randomly selected 10 plants from each plot. Cob of maize was harvested at 145 DAS (May 02, 2011) and sweet potato at 146 DAS (May 03, 2011). Data of both the crops were analyzed statistically and the means were adjudged using LSD. Cob equivalent yield and benefit cost analysis were also done.

Source of Information: Annual Report, Agronomy Division 2010-2011

Article Link (Online Journal):

Funding Source:

1. Asian Development Bank

Budget: 20,000/-

Total Budget (Tk.) : 20,000/-

Achievement/Findings:

The results revealed that maize normal row +1 row sweet potato (100% HM: 60% SP) combination might be suitable and profitable for the hill valley of Khagrachari.

Knowledge Management: Report/Proceedings