ISHS Acta Horticulturae 620: XXVI International Horticultural Congress: Asian Plants with Unique Horticultural Potential: Genetic Resources, Cultural Practices, and Utilization
EFFECT OF RAINFALL INTERCEPTION ON SOIL MOISTURE, TREE SAP FLOW, AND FRUIT QUALITY IN PEACH (PRUNUS PERSICA) |
| Authors: | D.G. Choi, D.C. Choi, D.H. You, H.G. Kim, J. Ryu, S.D. Oh |
| Keywords: | mulching, polyethylene film, rainfall, pit splitting, cell size |
| Abstract:
Effect of soil covering with black polyethylene film for rainfall interception (RI) on soil moisture, tree sap flow, and fruit quality in ‘Okubo’ peach were investigated to find out the factor decreasing fruit quality, when it rained at fruit mature season. Cell size of fruit was rapidly increased until the late of May, nearly stopped at the early of June, and regrew from the late of June in the natural condition. Change of soil water was less and slower in the treatment of RI than that in the control. The RI retarded the soil water increasing, whereas soil water in the control plot fluctuated with rainfall amount change. Soil water content in RI plot showed 80% lower at small raining and 40% lower at heavy raining than that in the control plot. Amount of tree sap flow during raining was high in all treatments. Tree sap flow kept high during the stable soil water period without rain, whereas it did lower during the unstable soil water period after rain. Pit splitting rate was 20% in control tree and 10% in the RI. Fruit hardness and sugar content were higher in RI treatment than that in the control. Therefore, taste of fruits in the RI treatment was better than that of the control. | |
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