[Objective] The purpose of the study was to enhance the yield and quality of American pluot. [Method] Through the alteration experiment with varietal substitution by high grafting for 4 years, the non-polluted and high yield cultivation technologies of American pluot with different grafting methods in different stages were studied. [Result] Survival rates of all kinds of grafting methods were over 98% in early spring.The period before and after autumn begins was suitable season for bud grafting. If the bud was grafted in early summer the crown width in the year was smaller than that by other grafting methods. [Conclusion] The optimum period for varietal substitution by high grafting of American pluot was the first ten days of March in early spring and the average yield of bud grafting with xylem was higher and that of chop grafting and cortex inserted grafting was next.
American pluotVarietal substitution by high graftingNon-polluted cultivation technologiesHigh yield cultivation technologies
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