Effects of Organic Fertilizer Application and Bagging Treatments on Fruit Quality and Postharvest Preservation Performance of Prunus persica 'apple' Peach

Objective Regarding to the problems of increasing planting scale, backward cultivation management technology and uneven fruit quality of apple peach in Guizhou, the effects of organic fertilizer application and bagging treatment on the improvement of fruit quality of apple peach was discussed, in order to improve the quality and postharvest preservation performance of apple peach fruit.

Method With Prunus persica 'apple' Peach as test material, the effects of organic fertilizer and organic fertilizer combined with bagging on the improvement of fruit quality and postharvest fresh- keeping performance(compared with compound fertilizer treatment, CK)as well as the effect of bagging on pesticide residues were studied.

Result The single fruit weight of organic fertilizer treatment was 232.35(±21.3)g, which was increased by 39.8% compared with CK, but the fruit firmness, vitamin C, total acid and total sugar contents showed no significant differences between the two treatments. Further more, the application of organic fertilizer delayed the softening process of apple peach fruit during storage and prolonged the preservation period of about 1 week. The treatment of organic fertilizer combined with bagging significantly reduced the total acid content by 24%, and increased the reducing sugar content by 10.5% in peach fruit, and also reduced pesticide residues such as chlorpyrifos, cypermethrin and imidacloprid compared with organic fertilizer treatment, while the fruit weight, fruit firmness and total soluble solids content showed no significant differences. Further more, the treatment of organic fertilizer combined with bagging reduced the weight loss rate of apple peach fruit during postharvest cold storage.

Conclusion The application of organic fertilizer combined with bagging had good effect on improving fruit quality, and could effectively improve the postharvest preservation performance of apple peach fruit.