What to do about low fruit set in apricot trees? Reasonable fertilization is key
"Yunda Quanshuguo" is a new special growth promoter that balances the shift from vegetative growth to reproductive growth in fruit trees and fruit vegetables (such as tomatoes, eggplants, cucurbits, etc.). Its main features are: ① No phytotoxicity symptoms, leaving no residue of any kind in the fruit, achieving pollution-free status and making it a green, trusted product. ② Fast flower promotion, able to quickly...
1 Base fertilizer, such as decomposed chicken manure, barnyard manure, compost, fish pond mud, decomposed human urine and feces and other farmyard manures, can supply the organic matter and trace elements necessary for the growth and development of apricot trees over a long period. It is the basic fertilizer and also the foundation for apricot trees to flower and bear fruit. Base fertilizer is generally applied once before winter when the soil has not yet frozen, in combination with orchard plowing, using strip trenches or radial holes; the application depth is generally 40 cm to 60 cm; for large trees with excessive fruit set, weak trees, and trees with poor flower bud quality, apply an additional 0.3 kg to 0.5 kg of phosphorus and potassium fertilizer per tree.2 Topdressing is meant to make up for insufficient base fertilizer and can be divided into pre-bloom fertilizer, post-bloom fertilizer, and flower bud differentiation fertilizer. Pre-bloom fertilizer is generally applied in spring after the soil thaws and before flower buds sprout, with 0.2 kg to 0.5 kg of urea applied per tree; young and vigorous trees are not fertilized, and after fertilization, irrigate thoroughly in a timely manner. This topdressing can promote uniform flowering, reduce flower and fruit drop, and benefit new shoot and root growth. After apricot trees bloom, the tree body has consumed a great deal of nutrients. After flower drop, the young fruit rapidly expands, and new shoots and new leaves also begin vigorous growth, requiring more nutrients, so quick-acting nitrogen fertilizer should be applied in a timely manner, along with a small amount of phosphorus and potassium fertilizer. During fruit expansion or the pit-hardening stage, quick-acting nitrogen fertilizer should be applied along with a small amount of phosphorus and potassium fertilizer to promote flower bud differentiation and lay the foundation for a bumper harvest the following year.