EFFECTS OF ROOTSTOCK AND THINNING ON YIELD, FRUIT-QUALITY AND ELEMENTAL COMPOSITION OF REDSPUR DELICIOUS APPLE

被引:13
作者
FALLAHI, E
SIMONS, BR
机构
[1] Department of Plant. Extension Center, Parma Research and Extension Center, University of Idaho, Parma, Idaho 83660
关键词
D O I
10.1080/00103629309368825
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Influence of two rootstocks and five levels of hand thinning (fruit spacing) on yield, fruit quality at harvest and after storage, and leaf and fruit elemental composition of 'Redspur Delicious' apple (Malus domestica Borkh.) were studied. Trees on M.7 rootstock had a higher yield with heavier and firmer fruit at harvest than those on M.26. Trees on M.7 had significantly lower leaf and fruit N which resulted in a darker fruit color than those on M.26 rootstock. Fruit from trees on M.26 had a higher soluble solids concentration (SSC) at harvest than those on M.7. Leaf and fruit potassium (K) increased but fruit calcium (Ca) decreased with an increase in fruit spacing. Thinning fruit to 10 cm or 18 cm spacing, depending on market demand for fruit size, is recommended for improvement of fruit quality. Fruit weight and quality was improved with 18 cm fruit spacing without a significant decrease in yield, while thinning fruit further than 18 cm apart reduced yield without a significant change in the fruit weight or quality.
引用
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页码:589 / 601
页数:13
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