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Study on the Productivity and Profit Ability of Potato Intercropped with Vegetables and Relayed with Onion

Abul Hashem
Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

Fouzul Kamal
Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

A. F. M. Maniruzzaman
Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

M. A. Akhtaruzzaman
Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

Abstract/ Executive Summary:

The profitability and productivity of potato( Solanum tuberosum L.) intercropped with spinach (Beta vulgaris var. bengalensis), leaf amaranth (Amaranthus sp.) and knolkhol (Brassica oleraceai and relayed with onion (Allium cepa L.) were evaluated during winter season of 1983- 84 and 1984-85 at the Central Research Station of BARI. Monocultures produced the highest yields of individual crops. Potato yield was reduced by II to 32 % in intercropping. The potato equivalent yield increased by 7 to 96%, LER 14 to 90%. and gross margin by 7 to 159% over monoculture potato. Highest potato equivalent yield was obtained from potato + knolkhol/onion treatment. This treatment gave also highest gross margin and increased the productivity by 56 to 64%. It appears that intercropping potato with vegetables and relayed with onion is more productive and profitable than growing potato alone.

Keywords: Productivity, Profitability, Potato, Onion, Intercropping, Relay cropping

Location: BARI, Joydepur, Gazipur

Start Date: 00-00-1983

End Date: 00-00-1985

Program Area: Farming System

Commodity: Potato, Spinach, Amaranth, Onion, Knolkhol

Objectives:

To evaluate the productivity and profitability of potato intercropped with vegetables and relayed with onion under irrigated condition.

Methodology:

The experiment was conducted on the upland of BARI Central Farm at Joydepur, Gazipur in a randomized complete block design with three replications. Potato, spinach, leaf amaranth, and knolkhol were planted on the same day. Onion was planted 25 days before harvesting potato. A unit plot of 4.5m X 3.5m was used for both intercrop and monoculture plots. There were five rows of potato in both intercrop and monoculture. Two rows each of spinach, leaf amaranth, or onion and only one row of knolkhol were planted between two rows of potato. The populations of onion and each vegetables in the mixtures were 50% of their respective monoculture. All P and K and 50% of N of potato were incorporated with soils of V-shaped furrows made by a furrow maker. Balance 50% of N of potato was side-dressed in two splits at 23 and 42 days after planting (DAP). The space between potato ridges were cultivated by spade. For seeding spinach and leaf amaranth, two furrows each 4 cm deep were made in each space between two potato ridges. One row of knolkhol was transplanted between two rows of potato. All P and K and 50% N were incorporated with the furrow soils before seeding spinach and leaf amaranth and with pit soil before transplanting knolkhol. The balance of N was side- dressed at 23 DAP. After harvesting the vegetables, the soil between Potato ridges was cultivated and two rows of onion seedling were transplanted in each of such space. For onion, all P and K and 1/3 N were incorporated in the soil before transplanting seedling. Balance N was side-dressed in two splits at 17 and 55 days after transplanting (DAT). All the vegetables were irrigated thrice at 23,42, and 65 DAP. Onion was irrigated 17,33, and 50 DAT. The marketable yield of each crop was recorded. Input costs, man hours used in the experiment for each crop, and the farm gate price of produce were recorded for monoculture and mixture. Cost and return analysis were performed. LER and potato equivalent yield(PEY) were computed .

Source of Information: Bangladesh Agron. J. 1990, 3(1 & 2): 39-43

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It appears from the results of this study that potato grown as inter- or relay crop are more productive and profitable than rnonoculture of potato. The mixture potato + knolkhol/ onion appears to be the most promising one for higher productivity and profit. The profit in this mixture was 1.4 times greater than the monoculture potato. However, preservation of potato is limited by higher cost, power failure, and accessibility of farmers to cold storage. Therefore, inter- and relay cropping of potato may be a more feasible alternative practice for farmers to get more profit from potato than growing it alone or undergoing the trouble of preservation. This approach may also provide better utilization of land and additional vegetables.

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