1. There was no significant in average leaf area in a given number of leaves. However, total leaf area per vine was significantly different from group to group. An increased number of leaves brought about anincreased total leaf area.
2. Shoots without clusters were remarkable younger in 20 and 25 number of leaves per shoot and control than the shoot with clusters in the same group, the greatest length shows in the shoot without clusters with 25 leaves, and control within group having the same number of leaves per shoot but different number of clusters, the length of shoots was almost the same.
3. Shoots having no clusters with 25 leaves, 20 leaves, and control demonstrated an increase in the weight of shoots over those shoots having no clusters with 15, 10, and 5 leaves.
A difference of 5 leaves had no appreciable effect on the weight of shoots. 54.82 per cent of weight of shoot was reduced when one cluster was allowed to remain on the shoot, and 48.81 per cent, two clusters as compared with the weight of shoot having no clusters.
4. The ratio of weight of shoot to length of shoot was 0.65, 0.42, and 0.38 in the treatment of mo lusters, on cluster, and two clusters per shoot regardless of number of leaves respectively.
5. Ratio of weight of shoots to leaf area per shoot was 0.028 in the shoots having no clusters regardless of number of leaves, 0.017 in the one cluster, and 0.014 in the two clusters respectively. The ratio of length of shoots to leaf area per shoot was 0.041-0.31 regardless of treatments.
6. Total yield of grapes per vine was 8.4 to 7.2 ㎏ in groups having two clusters per shoot and 4.2㎏ in groups having one cluster per shoot regardless of number of leaves to a shoot. In general there was a strikingly significant difference in weight between one and two clusters to a shoot.
7. A higher content of anthocyanin was found in shoots having 15 leaves with one clusters, shoots having 20 leaves with one and two clusters, and shoots having 25 leaves with one and two clusters, and a slightly lower content in shoots having 15 leaves with two clusters and shoots having 10 leaves with two clusters and an even lower content in shoots having 5 leaves with one and two clusters, and 10 leaves with two clusters.
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