Kyoho is a variety with serious flowering and easy to produce large and small seeds (parthenocarpy). There are many reasons why large and small particles are solid. It is easy to parthenocarpy in rainy days, low temperature (below 20℃) and insufficient light during flowering; Partial application of nitrogen fertilizer and excessive growth (large leaves, dark leaves and strong branches) are also easy to produce parthenocarpy. Climate conditions are difficult to control, mainly by controlling tree potential and reducing fruit size. No nitrogen fertilizer is applied before flowering of Wangshu. If it is produced in greenhouse, the growth can be controlled by controlling water. You can also control vegetative growth and promote results by spraying auxin and chlormequat chloride. When the fruiting branch has 7-8 leaves.

Once parthenocarpy occurs, it should be treated with swelling agent as soon as possible. Treatment method:

(1) large fruit (drupe) For a long time, if there are more than 20 large fruits on a fruit ear, it is necessary to thin out the small fruits to improve the quality of goods.

(2) When there are many small fruits (without stone fruit), the large fruits should be thinned out and treated with gibberellin with low concentration (25ppm), which can promote the fruit growth (up to 6-7 grams) and the commodity value is high.

The treatment period should be treated as soon as possible after the fruit setting can be clearly seen. The general treatment time should be about 10 ~ 20 days after full flowering. After 20 days of treatment, the growth of fruit grains is slow, so it is necessary to treat with 25ppm concentration 1 time.

Look at the photos, it is too late to treat with gibberellin now, and the estimated effect is very poor.