Long-term Effects of Pruning Severity, Nodes per Bearing Unit, Training System, and Shoot Positioning on Yield and Quality of ‘Concord’ Grapes
Long-term Effects of Pruning Severity, Nodes per Bearing Unit, Training System, and Shoot Positioning on Yield and Quality of ‘Concord’ Grapes
复制标题
修剪强度、每个结果单元的节点、训练系统和芽定位对‘Concord’葡萄产量和品质的长期影响
DOI：
10.21273/jashs.109.5.676
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发表时间：
1984
影响因子：
1.9
通讯作者：
C. Sims
中科院分区：
文献类型：
--
作者：
J. R. Morris;D. Cawthon;C. Sims
“协和”葡萄（葡萄属Labrusca L.）在本研究的第6年和最后一年，随着修剪强度的降低，产量增加，此时30 + 10、50 + 10和70 + 10修剪处理之间趋于均衡。到去年，修剪到70 + 10水平的葡萄藤生产出质量不可接受的水果。当3节距拍摄定位，他们的生产力相当于芽6和9节的手杖，表明需要暴露在阳光下。结果单元的长度对果实品质属性影响很小或没有影响。在一般情况下，拍摄定位增加产量，节点生产力，可溶性固形物的百分比，并在整个研究中降低藤蔓的大小。日内瓦双帘（GDC）训练的葡萄比双边警戒线（BC）训练的葡萄产生更多的果实。水果从GDC训练的葡萄树有一个减少的可溶性固形物的百分比在2的最后3年，并往往有一个低pH值。生产力最高的葡萄树生产的水果质量可接受的6年平均值是GDC训练，50 + 10修剪到6节点轴承单位，和拍摄定位。
Yields on ‘Concord’ grape (Vitis labrusca L.) increased as pruning severity was decreased until the 6th and last year of this study, at which time the yields tended to equalize between the 30 + 10, 50 + 10, and 70 + 10 pruning treatments. By the last year, vines pruned to the 70 + 10 level produced fruit of unacceptable quality. When the 3-node spurs were shoot-positioned, their productivity was comparable to buds on the 6- and 9-node canes, indicating the need for exposure to sunlight. The length of the bearing unit has little or no effect on fruit quality attributes. In general, shoot positioning increased yield, node productivity, the percentage of soluble solids, and lowered vine size throughout the study. Geneva Double Curtain (GDC) trained vines produced more fruit than the bilateral cordon (BC) trained vines. Fruit from GDC trained vines had a reduced percentage of soluble solids in 2 of the last 3 years, and tended to have a low pH. The most productive vines producing fruit of acceptable quality for the 6-year mean were the GDC trained, 50 + 10 pruned to 6-node bearing units, and shoot positioned.