Certainly, here is an article on control of flower/fruit dropping in apples:
Apple trees are known for their prolific flowering and fruiting abilities, but sometimes these fruits can be prone to dropping before they are fully ripe. This can be frustrating for orchard owners who rely on these fruits for income, or for home gardeners who want to enjoy a bountiful harvest. But fear not, there are several methods for controlling the amount of flower and fruit drop in apple trees.
One common reason for excessive fruit drop is poor weather conditions during the flowering stage. Excessive rain or wind can dislodge young flowers and cause them to fall off prematurely. In order to protect the flowers and encourage them to set fruit, it is important to try to plant apple trees in a location that is sheltered from strong winds. Mulching around the base of the tree can also help to maintain soil moisture and reduce soil compaction, which can help improve the tree’s absorption of nutrients.
Another factor that can contribute to fruit drop is an imbalance of nutrients in the soil. During the flowering and fruiting stages, apple trees require high amounts of nutrients such as phosphorus, potassium, and magnesium. If these nutrients are not replenished adequately, the tree may drop some of its fruits. To prevent this from happening, it is important to maintain a regular feeding schedule. Applying a balanced fertilizer to the tree in the late winter or early spring can help ensure that the tree has the nutrients it needs to produce a healthy crop of apples.
Pest control is also an important factor in controlling apple flower and fruit drop. Pests such as aphids, mites, and spider mites can damage the flowers and young fruits, causing them to drop off prematurely. It is important to regularly inspect the tree for signs of pest infestation, and to take appropriate measures to control them if necessary. This may include using insecticidal soap or other safe and effective methods.
Finally, pruning can also be an effective way to control apple flower and fruit drop. During the winter dormant season, it is important to remove any dead or diseased limbs, as well as any branches that are growing too close together or crossing each other. This can help improve air circulation and light penetration, which can improve the overall health of the tree and reduce the risk of flower and fruit drop.
In conclusion, controlling flower and fruit drop in apple trees is a multifaceted process that involves proper planting, regular feeding, pest control, and pruning. By following these guidelines, apple growers can maximize their yields and enjoy a plentiful harvest of delicious, healthy apples.