Hee-Seung Park

Estimation of Soil CO 2 Efflux from an Apple Orchard

This study was conducted to quantify the soil respiratory emission (SR) in an apple orchard and to determine its relationship with key environmental factors such as air temperature, soil temperature and soil moisture content. Experiment was made over the period from 23 April 2007 to 31 March 2008 in `Fuji` apple orchard of National Institute of Horticultural and Herbal Science in Suwon, Gyeonggi-do, Korea. The SR was measured by using the automatic opening/closing chamber system based on a closed method. Diurnal variations in SR showed an increase around 0700 hours with increasing soil temperature, its peak between 1400 and 1500 hours, and then a gradual decrease thereafter. Daily variations in SR depended largely on soil and air temperatures over the year, ranging from 0.8 to 13.7 g . During the rainy spell in summer (JulyAutumn) with higher temperature and more precipitation, the SR was lower than that in the spring (MayJune) with moderate temperature. The SR showed a significant exponential relationship with soil temperature (

Morphological Development and Chemical Composition of Epicuticular Wax Crystals in ‘Campbell Early’ Grape

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