Studies on feasibility of sustainable quality seed potato production technology and development of supply chain for the benefit of small and marginal potato growers of Karnataka

Shahid Ali, B.B. Kumar, C.M. Kalleshwara Swamy, M.S. Kadian, B.V. Ramakrishna

Abstract


Management of aphid vectors in potato is important for the production of quality seed potato. Aphids are the major vectors of many potato viruses which transmit viral diseases limiting the seed potato production. To explore the area with aphid free/low population a weekly aphid observation was made in major potato growing areas of Chikkaballapur and Chickmagalur districts during rabiand kharif seasons to assess the build-up trends on the standing crop using aphid-leaf count and catches of yellow water pan and yellow sticky traps. Aphid population was below threshold level in the areas surveyed, however in Chickmagalur aphid build-up was erratic due to heavy rain fall followed by dry spells. Harvested potato in Chikkaballapur was treated and stored in cold storage for three months. During June, 50 per cent of the seed stock was transported to Chickmagalur area for planting in kharif season and remaining seed was used for planting in Chikkaballapur area during rabi season. In Chickmagalur, the harvested and treated seed was stored in low cost country potato store for three months and 50 per cent seed from warehouse was transported to Chikkaballapur for rabi planting and remaining seed was planted in Chickmagalur area during November thereby saving nearly 40 per cent of seed cost. Thus, the feasibility supply chain has been established making the local potato growers self-sustainable in quality seed potato production resulting in 30-40 percent seed requirement met locally produced quality seed and non-traditional areas will be brought under potato cultivation. The breeder seed was multiplied under low cost insect proof net houses during rabi season in Chikkaballapur area, harvested seed was stored in cold storage thereafter distributed among the local potato growers for planting during kharif season in Chickmagalur area.


Keywords


Management, aphids, sticky traps, water pan, abiotic.

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