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Urea와 K<sub>2</sub>SO<sub>4</sub> 처리에 의한 복숭아 '미백도'에서 수확 시 과실의 무기성분 농도 및 과피색 변화
문병우,윤익구,문영지,남기웅,이영철,Moon, B.W.,Yoon, I.K.,Moon, Y.J.,Nam, K.W.,Lee, Y.C. 국립한국농수산대학교 교육개발센터 2013 현장농업연구지 = Journal of practical agricultural resear Vol.15 No.1
This study has been conducted to investigate the effect of Urea and K<sub>2</sub>SO<sub>4</sub> treatment at stone hardening stage and 20 days before harvest on soil chemical properties, mineral nutrient concentration and quality of 'Mibaekdo' fruit peach. K concentration after Urea and K<sub>2</sub>SO<sub>4</sub> treatment in soil was increased significantly by Urea 162g+K<sub>2</sub>SO<sub>4</sub> 188g/tree(standard amount) treatment at stone hardening stage, K<sub>2</sub>SO<sub>4</sub> 1.0% tree-spray, Urea 81g+K<sub>2</sub>SO<sub>4</sub> 94g/tree(half amount), Urea 162g+K<sub>2</sub>SO<sub>4</sub> 188g/tree and Urea 324g+K<sub>2</sub>SO<sub>4</sub> 376g/tree(double amount) soil treatment before harvest 20 days compared to control. T-N, K and Ca concentration in leaf was increased significantly by all treatment. but Na concentration in leaf was increased by Urea 0.5% and K<sub>2</sub>SO<sub>4</sub> 1.0% tree-spray treatment before harvest 20 days. T-N concentration in fruit skin was increased significantly by standard amount soil treatment, which decreased by K<sub>2</sub>SO<sub>4</sub> 1.0% tree-spray and half amount soil treatment. T-N, K and Ca concentration in fruit flesh(1~10mm depth flesh from peel) were increased markedly by all treatment excepted Urea 0.5% tree-spray. The leaf weight at harvest was increased markedly by Urea 0.5% tree-spray, standard amount and double amount treatment before harvest 20 days. Fruit weight was increased significantly by standard amount compared to all treatment. Red fruit skin(Hunter a value) progress was effective by K<sub>2</sub>SO<sub>4</sub> tree-spray, half amount and double amount treatment before harvest 20 days. Fruit SSC was increased significantly by Urea 0.5% and K<sub>2</sub>SO<sub>4</sub> tree-spray before harvest 20 days, standard amount treatment at stone hardening stage compared to control.
'캠벨얼리' 포도의 화수(花穗) 생장과 과실품질에 미치는 GA<sub>3</sub>의 영향
이영철,문병우,남기웅,문영지,Lee, Y.C.,Moon, B.W.,Nam, K.W.,Moon, Y.J. 국립한국농수산대학교 교육개발센터 2013 현장농업연구지 = Journal of practical agricultural resear Vol.15 No.1
This study has been conducted to investigate the effect of GA<sub>3</sub> solution dipping treatment after 1 days full bloom on spike growth and fruit quality at harvest of 'Campbell Early' grapevine. The fruit cluster growth(weight, length, width) and fruit stalk(diameter, length) at harvest were increased significantly by GA<sub>3</sub> 10 mg·L<sup>-1</sup> solution dipping treatment compared to control and another concentration. The berry growth (berry No, weight, length, diameter) at harvest showed no difference by treatment GA<sub>3</sub> concentration different. Spike weight was increased by GA<sub>3</sub> 5, 10, 20, mg·L<sup>-1</sup> treatment compared to control, but no difference GA<sub>3</sub> 40 mg·L<sup>-1</sup> treatment. The degree of compact berry, bloom, skin color and SSC at harvest by GA<sub>3</sub> solution dipping treatment were not significantly different from those of control. but increased seedlessness induction by GA<sub>3</sub> 10 mg·L<sup>-1</sup> treatment. The occurrence percent of berry cracking by GA<sub>3</sub> 5, 10, 20, 40 mg·L<sup>-1</sup> treatment significantly decreased. The bitter rot of berry harvest showed no difference by treatment GA<sub>3</sub> concentration different. Total spike length was increased by GA<sub>3</sub> 5, 10 mg·L<sup>-1</sup> treatment compared to control and GA<sub>3</sub> 20, 40 mg·L<sup>-1</sup> treatment. The spike length of 1st from 15th to position increased by GA<sub>3</sub> 10 mg·L<sup>-1</sup> treatment.