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자료유형
학술저널
저자정보
저널정보
한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY Vol.50 No.2
발행연도
2009.4
수록면
79 - 83 (5page)

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Ammonium thiosulfate (ATS) and MaxCel (6-benzyladenine containing product) were tested as bloom and postbloom thinners, respectively, for ‘Hongro’/M.9 apple trees at Jangsu, Korea in 2005 and 2006. ATS at 0.6 or 0.7% a.i. was sprayed at 85% full bloom while MaxCel at 100 ㎎ㆍL?¹ a.i. was sprayed at 10-㎜ fruit diameter. All the trees were hand thinned to a commercial crop load after a physiological fruit drop. In both years, ATS consistently reduced total crop load (30-34% for 0.6% ATS) by increasing both whole flower cluster removal and number of sites with a single fruit. MaxCel only also reduced crop load by about 18%. Combined with ATS, MaxCel further reduced crop load (35-48% with 0.6% ATS). Mean fruit weight was increased by ATS and/or MaxCel in both years, but yield was not affected. Fruit length/diameter ratio was slightly reduced (flattened) by MaxCel. Total soluble solids concentration was increased by only ATS. Neither of the chemical thinners had effect on fruit skin color, firmness, and juice acidity. A significant increase in return bloom by ATS was found in one out of two experiments, but MaxCel had no influence. It was concluded that the combined use of ATS and MaxCel was effective in terms of both crop load reduction and increase in fruit size in ‘Hongro’/M.9 apple trees.

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Abstract
Introduction
Material and Methods
Results
Discussion
Acknowledgements
Literature Cited

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UCI(KEPA) : I410-ECN-0101-2009-525-018296407