경상북도 지방의 기상환경 변화에 따른 상주둥시 감나무의 과실특성 및 수확량

Abstract

Division of Special-purpose Trees, Korea Forest Research Institute, Suwon 16631, Korea(Received September 11, 2015; Revised October 29, 2015; Accepted December 3, 2015)ABSTRACTThis study was conducted to analyze the relationship between climate factors and fruit characteristicsof ‘Sangjudungsi’ persimmon (Diospyros kaki THUNB) has been mainly cultivated in Sangju ofKorea. We has been surveyed the yield and fruit characteristics such as fruit weight and soluble solidsof ‘Sangjudungsi’ persimmon from 2010 to 2015 for five years. Also, as major meteorological factor,mean air temperature, cumulative temperature and days, the data of sunshine duration, diurnalrange, and rainfall were collected from Sangju Regional Meteorological Administration. As result ofthat, the annual variation of fruit weight was affected by sunshine duration for April and Octoberrelated starting point of fruit weight increase. The content of soluble solids was affected by sunshineduration for April and October similarly with fruit weight and was negatively correlated with thenumber of days with precipitation in the year. These results indicate the characteristics related to fruitquality like the above were affected by the sunshine duration and precipitation which is critical factorfor the intensity of radiation during rapid growth period (April and October). Fruit number and yieldper tree was commonly affected by mean air temperature of April and cumulative temperature daysof October. These results also indicate that temperature for period of rapid growth stage ofpersimmon may have an important role in the fruit number and yield per tree.Key words: Climate factor, Diospyros kaki THUNB, Fruit weight, Soluble solids, Yield