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변칙주간형을 개심형과 Y자형으로 갱신한 ‘부유’ 감나무의 수체 반응
최성태(Seong-Tae Choi),김학규(Hag-Kyu Kim),김성철(Sung-Chul Kim),최태민(Tae-Min Choi),강성모(Seong-Mo Kang),박윤문(Youn-Moon Park) 한국원예학회 2006 원예과학기술지 Vol.24 No.3
‘Fuyu’ persimmon trees had been grown for eight years in a modified-leader (ML) form with five scaffolds. In spring of 2003, they were heavily pruned for tree form renovation to an open-center (OC) having three scaffolds or a Y form having two. Tree growth and the fruit production were then monitored for three years. Tree forms significantly affected neither the growth of trunk, tree height, and terminal shoots nor pruning weight. However, renovating from an ML to an OC or a Y significantly decreased the number of shoots per tree. The renovating to Y form tended to stimulate more water sprouts but with an inconsistent year-to-year variation. Per-tree yield and yield efficiency were higher in ML and OC trees, respectively. Fruit set, fruit color, and soluble solids of fruits were not consistently changed during the three years depending on tree forms, while average fruit weight tended to be higher in OC trees. Data suggested that tree density be considered together when renovated to OC or Y form, and that the renovated trees be cared for tree vigor and fruiting.