How to identify orange yellow dragon disease?

Citrus huanglongbing, also known as "cancer" of citrus, is characterized by its symptoms on new shoots. The typical symptoms are the following:

One is yellow tip. When the sapling begins to develop, several yellow shoots appear on the individual or part of the green canopy. These yellow shoots occur at the top or periphery of the crown. The leaves on the yellow tip stopped turning green before turning green, showing a uniform or almost uniform yellowing of color. This is the type of yellowing that occurs at the sapling stage.

The second is leaf spotted yellowing. After the leaves turned green, they began to yellow from the base of the main vein or the side veins or the edge of the leaves, and gradually spread to form yellow and green mottles. Finally, the whole leaves can be evenly yellowed. The tree vigor of this disease tree has shown a decline.

Huanglongbing can also be identified from the following situations:

1 The leaves of yellowing become smaller and thicker, the texture becomes harder, and the hand feels a leathery texture. The students are more erect on the shoots, and some of the diseased leaves can be seen to have swollen veins and localized corky cracks.

2 The diseased leaves on the diseased tree are easy to fall off in late autumn shoots, and the deciduous branches tend to die. The new shoots from diseased trees tend to be shorter and the crowns are sparse.

8 diseased trees bloom early and more, a large proportion of malformed flowers.

4 The diseased trees are small in size, sour and sour. The deformities are obliquely shoulder-shaped. Some species have a yellowish first edge near the fruit pedicle, called "red nose fruit."

5 There are few new roots in the diseased tree, and old roots are easily rotted.

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    About Company
    Yanchi County Yijian Biotechnol Co.,Ltd
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