Stable cultivation technique of fully ripened fruits on citrus [Citrus] 'Shiranuhi'
2008
Furukawa, T.(Kumamoto-ken. Agricultural Research Center, Koshi (Japan)) | Mihara, T. | Okuda, Y.
When we do ripened cultivation of Citrus 'Shiranuhi', it become to foster alternate bearing for causing easily decline of tree vigor, and it become to increase trouble of pericarp for being weakened pericarp after full coloring. Then, we examined partial harvest method which lessened decline of tree vigor in ripened cultivation, and examined covering materials, plant growth regulator, and etc which lessened damage of pericarp. In consequence, about the harvest method with less tree vigor declines, partial harvest method which harvest at 30 percent ratio in March is as same as annual yield of conventional method (whole harvest in January), and is also improved fruit quality. About plant growth regulator, when we splayed 1 ppm dilute solution of Gibberellin at 50-60 percent ratio coloring time before covering bag, water rot were mitigated. About mitigation means of pericarp trouble using covering material, water rot and stem break (kappensyou) were mitigated by covering fruit with a double bag and putting parafilm around peduncle of fruit(closing part of bag).
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