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Spring pruning of citrus trees is best done during the bud germination phase. This type of pruning primarily involves short cuts, which help to reduce the decline of the main branches and their side shoots, as well as thin, weak nutrient branches. By doing so, it encourages the growth of new shoots and promotes re-flowering. Additionally, large branches that are severely degraded at the top of the canopy can be selectively thinned out—usually 3 to 4 per tree. It’s also important to remove crossing or overlapping branches, as well as weak fruiting branches and fruit-bearing shoots, to improve air circulation and light penetration within the canopy.
Pruning should always be combined with proper fertilization and pest control measures. After rainfall, applying a quick-release nitrogen fertilizer at key points around the tree can significantly restore its vitality, protect the leaves, and support the accumulation of nutrients for flower bud development. However, it's crucial not to water the tree immediately after harvesting, as this could dilute the nutrient concentration and hinder the formation of flower buds.
In terms of pest control, cockroaches are a common issue. To manage them, you can spray a mixture of pine oil at a concentration of 15 to 20 times, or use 0.5 to 0.8% solution of a specific insecticide, or apply a 200 to 250 times diluted washing powder solution. These methods are effective in preventing infestations and protecting the health of the citrus trees.
Regular monitoring and timely intervention are essential to maintain the overall health and productivity of your citrus orchard. Pruning, fertilizing, and pest management should all be part of a consistent care routine throughout the growing season. With proper attention, your citrus trees will remain vigorous, productive, and resistant to diseases and pests.