초록

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Abstract ▼ AI-Helper

This study was carried out to examine the effect of polyethylene film color and removing time of the mulching film in yacon (Polymnia sonchiiolia Poepp. & Endl.). The plant height on nonmulching was smaller about 10 cm or larger with 112cm than on other mulches ranged with $134{\sim}139$ ...

This study was carried out to examine the effect of polyethylene film color and removing time of the mulching film in yacon (Polymnia sonchiiolia Poepp. & Endl.). The plant height on nonmulching was smaller about 10 cm or larger with 112cm than on other mulches ranged with $134{\sim}139$ cm at harvesting, and other characters examined were similar to that of plant height. The weight of tuberous root per plant was heavier on mulches ranged with $0.79{\sim}0.91$ kg than on non-mulching with 0.61 kg. Among the kind of mulches, plant height was the tallest with 139 cm in combination and declined in order of transparent, green and black polyethylene films. Yields among colored polyethylene films were the heaviest with 0.91 kg per plant in combination, 0.88 kg in black and 0.84 kg in green. In growth and yield full mulching untill harvesting was more effective than the other removed mulching treatments. It was effected on growth promotion at early growth stage, soil temperature and water preservation.

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