What medication works well for preserving pear tree flowers and fruit?

For preserving pear tree flowers and fruit, you can use naphthaleneacetic acid, sodium naphthaleneacetate, gibberellin, chlormequat chloride, paclobutrazol, and daminozide. According to different varieties and pear trees in different environments, choosing the appropriate ratio of medication is most effective.

What medication to spray for preserving pear tree flowers and fruit

1. Gibberellin: During the flowering or young fruit stage of pear trees, spray flowers or young fruit once with 10~20mg/L gibberellin, which can promote fruit set and increase yield.

2. Naphthaleneacetic acid, sodium naphthaleneacetate: When 80% of the flowers of Anli pear are open, spray a 100mg/L naphthaleneacetic acid solution, which can increase the fruit-setting rate.

3. Chlormequat chloride: Before pear buds sprout and when young leaves of new shoots emerge, spray 500mg/L chlormequat chloride once each time, which can reduce branch growth, increase the number of short branches and leaf clusters, and improve the fruit-setting rate and yield.

4. Paclobutrazol: Spray 450mg/L paclobutrazol 3 weeks after full bloom of pears, which can increase the flower formation rate. Soil application of 5g/tree or spraying 500mg/L + soil application of 5g/tree paclobutrazol has a promoting effect on flower bud formation in young Korla Fragrant pear trees.

5. Daminozide: For most Japanese pear or sand pear varieties, applying daminozide can also achieve good flower-promoting effects. Spraying a mixture of 1500mg/L daminozide and 250mg/L ethephon has an even better flower-promoting effect.