Yield and Quality Response of Concord Grapes (Vitis labruscaL.) to Mechanized Vine Pruning
Yield and Quality Response of Concord Grapes (Vitis labruscaL.) to Mechanized Vine Pruning
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康科德葡萄（Vitis labruscaL.）的产量和品质对机械化葡萄修剪的影响
DOI：
10.5344/ajev.1981.32.4.280
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发表时间：
1981
影响因子：
1.9
通讯作者：
D. Cawthon
中科院分区：
文献类型：
--
作者：
J. R. Morris;D. Cawthon
产量，葡萄藤的大小，和果汁质量确定从康科德葡萄后，连续6年的手修剪到30+10修剪时间表或机械修剪，然后没有节点调整或节点限制为60或90每藤。在机械修剪后，手动修剪将每棵葡萄树的节点数量限制为60个，保持了葡萄树的大小，生产的果实产量和果汁质量，与平衡修剪到30+10时间表的葡萄树相当。保留90个或更多的节点，每藤机械修剪后，每藤和每节果实产量减少后，第6年，并导致不可接受的客观和感官质量。这些处理导致葡萄的不均匀成熟，导致可溶性固形物低和果汁颜色差的问题。连续使用机械修剪的协和葡萄只可行的相对统一的葡萄园，已拍摄定位，其次是甘蔗的选择和节点的限制。
Yield, vine size, and juice quality were determined from Concord grapes after 6 consecutive years of hand pruning to a 30+10 pruning schedule or mechanical pruning followed by no node adjustment or node limitation to 60 or 90 per vine. Hand pruning to limit the number of nodes per vine to 60 following mechanical pruning maintained vine size, produced fruit yield, and juice quality comparable to vines balanced pruned to a 30+10 schedule. Retaining 90 or more nodes per vine following mechanical pruning reduced per vine and per node fruit yields after the 6th year and resulted in unacceptable objective and sensory quality. These treatments resulted in uneven ripening of the grapes which contributed to the problem of low soluble solids and poor juice color. Continuous use of mechanical pruning of Concord grapevines would only be feasible in relatively uniform vineyards that have been shoot positioned and followed by cane selection and node limitation.