What specific effective products work well for preserving flowers and fruit set?
Specific effective products for preserving flowers and fruit set include brassinolide, sodium naphthaleneacetate, gibberellin, cytokinin, sodium nitrophenolate, zineb, thiram, and others, but gibberellin and cytokinin are used more often now, and it is generally recommended to use them together with boron-calcium foliar fertilizer after 2/3 of the flowers have faded, for better results. Of course, from the perspective of enhancing crop stress resistance, timely fertilization and pest and disease prevention can also preserve flowers and fruit set.
In addition to the above, the following methods can also preserve flowers and fruit set:
1. Make good use of nutrient elements for fruit trees and apply fertilizer element fertilizers properly. A full supply of fertilizer is a necessary condition for fruit tree growth, flowering, and fruiting, and phosphorus, potassium, calcium, boron, zinc, and other nutrient elements are closely related to flowering, fruiting, coloring, and fruit enlargement. Phosphorus is the energy element for cell division, potassium is the quality element that improves stress resistance and quality, calcium is the main component of the cell wall and a key element for enhancing fruit resistance, and boron and zinc can be said to be the reproductive elements of fruit trees, ensuring the normal growth and development of reproductive organs.
In addition to the routine use of nitrogen, phosphorus, and potassium fertilizers, it is essential to use elemental foliar fertilizer containing enzyme power. Enzyme-power foliar fertilizer can activate and promote the absorption of nitrogen, phosphorus, potassium, boron, calcium, zinc, molybdenum, and other elements by fruit trees. In particular, enzyme-power foliar fertilizer that itself contains boron, calcium, and molybdenum elements further strengthens the plant's flower and fruit preservation and the nutritional needs of fruit trees in the later stage. When used well, this plays a very good role in preserving flowers and fruit set in fruit trees.
2. Manage pests and diseases well, pay attention to combining prevention and control, give priority to prevention, and use pesticides reasonably.
3. Pay attention to controlling the vegetative growth of fruit trees, such as preventing excessive growth of branches, regulating the contradiction between vegetative growth and flowering and fruiting, and urging fruit trees to go all out to ensure normal reproductive growth.
4. If due to climate changes, such as frost or late spring cold, the flower bud differentiation of fruit trees is poor or flower and fruit drop after flowering is serious, then some regulators can be used for regulation. Generally speaking, gibberellin, cytokinin, and others are used more often to preserve fruit, and it is generally recommended to preserve fruit after 2/3 of the flowers have faded. When using fruit-preserving products, it is recommended to use them together with boron-calcium foliar fertilizer for better results, because foliar fertilizer supplementing both calcium and boron can better absorb and transform boron and calcium elements. For some varieties that are difficult to preserve fruit, it can also be used once more after half a month. It should be noted that the dosage of regulators must be controlled and they must not be used too much or too frequently.
The above is the relevant introduction to specific effective products for preserving flowers and fruit set. We hope it is helpful to everyone.