Although citrus trees have entered a dormant period in autumn, the management of this period cannot be ignored. Here are a few things to keep in mind about managing citrus trees in late autumn:
1.Fertilize. In the fall, citrus trees need to absorb the right amount of nutrients for winter dormancy and growth the following year. However, the amount of fertilizer should be applied appropriately so that over-fertilization does not lead to root or leaf burning. Generally speaking, 1000-1500 kg of organic fertilizer can be applied per mu of citrus trees, and an appropriate amount of trace element fertilizers can be added at the same time, such as potassium sulfate, superphosphate, etc.
2.Trim. Autumn is the dormant period for citrus trees and a good time for pruning. The main purpose of pruning is to remove pests and diseases, weak branches, and overlapping branches to improve the ventilation and light conditions of the canopy. When pruning, care should be taken to retain the appropriate length of branches to avoid over-pruning and weakening the tree. Pruning is best done between late autumn and early winter.
3.Pest and disease control.
Although citrus trees enter the dormant period in the fall, the control of pests and diseases cannot be ignored. At this time, attention should be paid to removing fallen leaves and weeds in the orchard to reduce the overwintering grounds of pests and diseases. At the same time, measures such as spraying stone sulfur mixture can be taken for pest control. When spraying the drug, it should be done on a day with good weather to ensure that the drug is effective.
4.Protect from the cold and keep warm.
In late autumn and early winter, temperatures gradually decrease, and citrus trees are also susceptible to cold. Therefore, measures should be taken to keep citrus trees warm from the cold before the onset of winter. For example, straw can be laid in the orchard, covered with plastic film, etc., to maintain the temperature and humidity of the soil and avoid frost damage.
In conclusion, late autumn citrus tree management needs to pay attention to fertilization, pruning, pest control, and cold and warmth. Only scientific and rational management can ensure the healthy growth and harvest of citrus trees.