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There are six bogey in apple summer tube
June is a critical period for apple tree management during the summer season. The primary goal is to balance vegetative growth with reproductive growth, encourage flower bud formation, and lay a solid foundation for flowering and fruiting in the following year. However, there are several common mistakes that growers should avoid during this time.
One major mistake is over-thinning, which can stimulate excessive regrowth of long and medium shoots, leading to weak branches. Additionally, overly sparse foliage reduces the tree's ability to perform photosynthesis, hindering nutrient accumulation and ultimately affecting flower bud development. The thinning should be based on the projected canopy area, and the leaf-to-fruit ratio should generally be kept around 30% after pruning.
Another common error is improper branch spreading. Pulling branches too aggressively or at incorrect angles can weaken the tree and fail to promote the development of short branches. Instead, techniques like twisting, bending, and supporting should be used to open up the base angle and waist angle, keep branches level, and prevent "bowback" formations.
Twisting the tips of upright shoots without proper planning can also cause issues. If a shoot is more than 25 cm long and has space on its back, it’s best to twist the tip at the semi-lignified part (about 5 cm from the base) and remove the rest to control growth and improve light penetration.
Avoiding blind short cuts or heavy topping is essential, as they can lead to excessive branching, poor air circulation, and reduced fruiting. Instead, consider cutting back two-year-old branches at the junction of spring and summer shoots—this method, known as "re-picking the heart," helps promote the development of short and medium branches along with flower buds.
Girdling should not be done arbitrarily. It must be based on the variety, branching potential, and overall tree health. The girdling width is typically about 1/10 of the trunk diameter, and the wound should be protected with bandaging to ensure healing within 25 to 30 days.
Lastly, after bagging, it's important not to neglect pest and disease control. Choose environmentally friendly, low-residue pesticides for early prevention of pests such as leaf miners, aphids, and mites. Ensure proper intervals between treatments and rotate pesticide types to prevent resistance. Regular monitoring and timely intervention are key to maintaining healthy trees and high-quality fruit production.