Studies on protecting vegetable crops from gases, 1; effect of ammonia gas on radish, Chinese cabbage, tomato and cucumber
1987
Kim, B.Y. | Cho, J.K. (Rural Development Administration, Suwon (Korea R.). Agricultural Sciences Inst.)
This study was carried out to find out the effects of ammonia gas on the leaf destruction of vegetable crops and nitrogen content in their leaves. Radish, Chinese cabbage, tomato, and cucumber were fumigated with 0.05, 0.1, 0.2 mg/l ammonia gas for 2 hrs under different exposure time, light, and soil water condition at vegetative growth stage. The crop damages measured by percentage of leaf destruction were more severe at the night time fumigation than treatment during the day, at the full sun condition t1517han the shading, and at the higher soil water content. Cucumber plant showed higher resistance to ammonia gas than tomato plant. The chlorophyll content in leaves of each crops were remarkably decreased by increment of ammonia concentration from 0.05 mg/l to 0.2 mg/l, but the N content in them was incre
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