Effects of early planting and polyethylene mulch on soil for early maturing soybean in Kyonggi area
1987
Song, S.H. | Kim, S.K. | Park, K.Y. | Kim, B.H. | Lee, D.W. (Kyonggi Provincial Rural Development Administration, Hwasong (Korea R.))
This study was carried out to investigate the effects of early planting and polyethylene film (P.E.) mulch on early maturing soybean of Korean native cultivar Kyonggi No.114 in the Kyonggi area. It was planted four times at the ten days interval from April 1 to April 30 in 1985 and 1986. The average soil temperature was 1-5 deg C higher under the polyethylene film mulch condition than the conventional cultural practice condition. Soil moisture content also was higher under P.E mulch condition. Days to emergence w1639as shortened 5-16 days and days to flowering was shortened 3-5 days. The fresh pod yield was increased 12% more at the planting date of April 1 and April 10. Income was increased 70 and 83% more at the plating date of April 1 and April 10 under the polyethylene film mulch condit
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