Soil improvement and plant growth on the newly-reclaimed sloping land, 1; effects of vinyl mulching and zeolite application on silage corn
1989
Hur, B.K. | Jo, I.S. | Um, K.T. (Rural Development Administration, Suwon (Korea R.). Agricultural Sciences Inst.)
A field experiment was carried out to evaluate the effects of zeolite application and vinyl mulching on the changes in soil physico-chemical properties and yield of silage corn on the newly-reclaimed sloping land. Corn (Suwon 19) was cultivated under 4 application levels of zeolite, 0, 500, 1,000 and 1,500Kg/10a, with and without vinyl mulching, and various soil physico-chemical properties and corn growth were investigated. Soil physical properties, such as cation exchange capacity and water stable aggregates, were increased, but soil hardness was decreased by zeolite application. The porosity and temperature of soil were increased greatly by vinyl mulching. The differences between daily maximum and minimum soil temperature were large in beginning stages of crop growth, but those were decreased to 2deg C after mid-August. Zeolite application enhanced the plant growth and increased yields by 3-37 % compared to control, also vinyl mulching brought to increase the corn yields by 17-23 %. Water stable aggregates was correlated with soil hardness, and silage yields were highly correlated with porosity, air phase and water stable aggregates
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