The lichens are common diseases on the leaves of Shatian pomelo. They appear in closed or poorly lit orchards. Generally, a layer of pale yellow powder is formed on the branches and leaves, and the closer to the ground, the more severe the branches and leaves. The Shatian pomelo tree covered with lichens on the branches and leaves, the photosynthesis is blocked, the tree declines, affecting the flowering results, not only the fruit set rate is low, but also the fruit is thin, the flesh is dry, the juice is less, the sugar content is low, the fruit is light, and the coloring is poor. To eliminate the lichens hazard, there are several ways to do this: Eye Nut,Anchor Eye Nuts,T76 Anchor Eye Nuts,Ring Eye Nut J.B Machinery (Ningbo) Co., Ltd. , https://www.jbdrill.com
The tree on the lichens is harmful
First, the leaf surface spray copper preparation. After the lichens appear on the leaves of Shatian pomelo, 1000 times of 46.1% aqueous solution of copper hydroxide or 600 times of 20% thiabend copper aqueous solution and 600 times of 20% quinoline copper aqueous solution are sprayed every 10~15 days. 2~3 times, evenly spray the leaves and leaves covered with the lichens, so that it is better to start dropping the drops of water. The lichens will fall off.
Second, the foliar spray stone sulphur mixture or Bordeaux mixture. In the winter, combined with the clearing garden, spray a 0.8~1 wave of Meteorite mixture or 1:1:100 times Bordeaux mixture inside and outside the canopy. After the spring temperature rises, when the rain washes, the lichens will be washed away by the rain and fall off.
3. Spray grass ash or sulfur suspension. During the growth and development of Shatian pomelo, pay attention to check the branches and leaves near the ground, and find that when the lichens are adsorbed on the branches and leaves, the leaves are sprayed 25~30 times dry and pure grass ash leaching liquid or 500 times 50% sulfur suspending agent aqueous solution. It can inhibit the growth and reproduction of lichens, control the spread, and cause the lichens to fall off quickly.
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