Effect of removing P.E film-mulch at budding stage of tobacco on the change of moisture and mineral content in plow layer soil and nutrient uptake
1986
Hong, S.D. | Lee, Y.H. (Korea Ginseng and Tobacco Research Inst., Suwon (Korea R.). Experiment Station) | Kim, J.J. | Yuk, C.S. (Chungbuk National Univ., Chongju (Korea R.))
This experiment was carried out to investigate the environmental changes of rhizosphere, behavior of nutrient components in soil, and nutrients uptake and growth response of the tobacco plant in the condition that mulch as polyethylene film, had been removed on the ridge at the 50th day after transplanting in comparison with continuous mulching condition. After rainfall, soil moisture content in the plow layer was greatly increased without mulch in comparison with that of the plot with mulch. As a result, leaf water potential of tobacco plant without mulch was hig1370her than that with mulch. Available nutrients such as NH4-N, NO3-N, and total salts in the plow layer of the plot without mulch tended to be increased, and especially accumulated on the surface layer owing to the redistribution of soil water by rainfall during the latter growth stage after removing m
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