Effect of Cultivation of Rotation Crops on Soil Physico-chemical Properties and Yield of Watermelon in Greenhouse

다국어 초록 (Multilingual Abstract)

Most of the plastic vinyl house areas are filled with many fertilizer materials for the year-round cultivation of crops. The sequence cultivation of specific crops is deficient in essential elements, salt accumulation, excess, and deficiency of nutrients. The objective of this study was to investigate soil properties and watermelon productivity in plastic film houses according to the short-term crop rotation in the continuous watermelon-cultivated soils. The short-term rotation crops selected were watermelon, pumpkin, sesame, spinach, radish and soybean. The results are as follows. In the following crop rotation of soybean and sesame, the volume density decreased, the porosity increased, and the ratio of the solid phase in the soil was lowered. After the experiment pH and exchangeable Mg increased in all treatments irrespective of the crop rotation, and EC and available phosphorus decreased with sesame, spinach, radish, and soybean rotation. Soil organic matter (SOM) increased in soybean and sesame rotation treatments and decreased in watermelon, pumpkin, spinach, and radish rotation treatments. Among the growth characteristics of watermelon, stem diameter, plant length, and fresh weight showed good growth in spinach, radish, and soybean rotation treatments, and watermelon continuous cropping and pumpkin rotation treatment generally showed poor growth. The yields of watermelon were increased by 7 - 8% to 45,620 and 46,030 ㎏ ㏊<SUP>-1</SUP>, respectively, in radish and soybean rotation treatments, compared with 42,730 ㎏ ㏊<SUP>-1</SUP> of watermelon continuous cropping treatment. These results suggest that the addition of short-term rotational crops such as radish and soybean crops could improve the physico-chemical properties of the soil and improve watermelon productivity.

목차 (Table of Contents)

• ABSTRACT
• Introduction
• Materials and Methods
• Results and Discussion
• Conclusions
• References