In the summer, with high temperatures, full sunlight, and plenty of rainfall, mulberry trees experience optimal growth conditions. However, proper management is essential during this time, focusing on what is known as the "four defenses." These strategies are crucial for maintaining tree health and productivity.
After the summer harvest, the area between the rows of mulberry trees becomes exposed, creating an ideal environment for weeds to grow rapidly. This can lead to the formation of dense weed cover, which competes with the mulberry trees for nutrients and water. To prevent this, it's important to conduct timely weeding after the harvest, ensuring that weed growth is controlled and does not interfere with the development of the mulberry trees.
Waterlogging is another critical issue following heavy rains. When the soil becomes saturated, the roots of the mulberry tree may shrink or even die off. While new leaves and roots begin to grow above ground, the tree's ability to absorb water and nutrients increases significantly. However, if drainage is poor due to blocked canals, standing water can severely affect root respiration, reduce nutrient uptake, and even cause the tree to suffocate. Therefore, after the summer harvest, it's essential to clear the canals and ensure proper drainage to keep the soil dry and healthy.
The post-harvest period is also a peak season for pests. Insects such as mulberry caterpillars and wild silkworms can damage the leaves, reducing both their quality and yield. This can pose a threat to silkworms that feed on the leaves. Regular monitoring is necessary to detect pest activity early, allowing for prompt intervention. Effective measures include controlling leaf-eating pests and managing other threats like the mulberry horse, ensuring the health of the trees and the safety of the silkworms.
Finally, fertilization plays a key role in restoring the vitality of the mulberry trees after the summer harvest. To promote rapid regrowth, encourage early budding, and increase the number of new leaves, a significant amount of fertilizer must be applied. The first application is typically done at the beginning of July, using around 20 kg of urea and 40 kg of well-rotted manure per acre. A second application can be made at the end of July or the start of August, using about 15 kg of urea per acre. It's important to apply the fertilizer deeply to enhance its effectiveness and ensure the trees receive the necessary nutrients for robust growth.
Yancheng Rongtai Labware Co.,Ltd , https://www.rongtailab.com