What is the problem with paper walnut oil?

1. Physiological flow glue: mainly occurs on the trunk and main branches. After the rain, the gum turns into a brown-brown hard amber-like rubber block. After being infected by saprophytic bacteria, the diseased part becomes brown and rot, causing the tree to become weaker and weaker. In severe cases, the dead tree is caused, and the rainy season is seriously affected. Young trees are mild. Linyi Fertilizer Network Copyright

2, invasive flow of glue: mainly harmful branches. In the same year, the pathogens infested the shoots, and most of them invaded from the wounds and lateral buds. There were tumor-like protrusions centered on the lenticels. In the same year, there was no glue, which had latent infection characteristics. The next year, the tumor skin cracked and overflowed the glue, and the diseased part was in the late stage. The surface produces a large number of fusiform or round small black spots. There are 2 peak periods in 1 year, 1 time from early May to early June, and 1 time from late August to early September. This is the largest with physiological flow glue. the difference. Linyi Fertilizer Network Copyright

Second, comprehensive prevention measures: Linyi Fertilizer Network Copyright

1. Strengthen cultivation management, enhance tree potential, and improve the disease resistance of peach trees. Apply more organic fertilizer to diseased trees, increase the amount of phosphorus and potassium fertilizer, and control nitrogen fertilizer in the middle and late stages. Reasonable pruning, reasonable load, coordinating the contradiction between growth and results, maintaining a stable tree. Drain the rainy season and reduce the humidity in the peach garden. Timely summer shears to improve ventilation and light transmission conditions while reducing pest and wounds and mechanical wounds. Linyi Fertilizer Network Copyright

2, eliminate the source of overwintering bacteria: in the coldest December to January to carry out Qingyuan disinfection, scrape the flow of hard blocks and the rot layer and wood underneath, concentrate and burn, then spray fungicide + silicone to eliminate the overwintering bacteria Sources, eggs, and at the same time prevent freezing and daily burning. Linyi Fertilizer Network Copyright

3. Spraying at the right time in the growing season: From the end of March to the middle of April, it is a period of conidial spores of invasive gums. It can be combined with other diseases and sprayed with fungicides for prevention. From the beginning of May to the beginning of June, from the beginning of August to the beginning of September, the two peak incidence periods of invasive flow gum disease, on the eve of each peak, spray the fungicide every 7-10 days, even spray 2 3 times, the number of sprays depends on the condition. Linyi Fertilizer Network Copyright

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