Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
권호 표지

Comparison of Fruit Quality and Vegetative Growth in 'Kyoho' Grape by Crop Load and Thinning

수량 및 과방중 조절에 따른 '거봉' 포도의 품질 및 생육 비교

Shim, Sung-Bo;Kwon, Yong-Hee;Hong, Yoon-Pyo;Park, Hee-Seung
심성보;권용희;홍윤표;박희승

  • Published : 2007.12.31
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Abstract

To find out proper crop load in ‘Kyoho’ grapevine, crop load was adjusted as heavy (about 2,500 ㎏ㆍ10 a⁻¹) and light (about 1,800 ㎏ㆍ10 a⁻¹) degrees, and cluster thinning was achieved by three degrees, light (about 700 g/cluster), medium (about 500 g/cluster), and strong (350 g/cluster). At 90 days after full bloom (DAFB), clusters with over than 8 coloring degree, which was measured by the color chart developed by National Horticultural Research Institute, RDA, Korea, were harvested. Then, the rest was harvested at 108 DAFB. All berry clusters produced larger berries in the vines with light crop load. The berry cluster with strong berry thinning did not show any difference in soluble solids content regardless of the difference in crop load. However, the berry clusters with medium and light berry thinning had higher soluble solids in the vines with light crop load. There were no differences in titratable acidity according to treatments. Heavy cropping delayed berry ripening with more frequent berry cracking. Light cropping showed more even berry ripening with higher fruit quality.

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References

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