introduction
"Vampire" - Celestial Bull, often we also call it Bullhorn. Friends in the countryside should have played when they were young. After catching it, we often tied it to its feet with a rope. The Tianniu family, a family of arthropods of the insect family Coleoptera, is a plant borer pest, which can be affected by forests, fruits, mulberries, tea, cotton, hemp, wood, etc. Many farmers have found that the trunk is drilled and there are wood chips. This precisely reflects the characteristics of the Tianniu: the moth nature, the latent nature, the longer the mothing time, the more serious the harm.
Once a strong and thick green tree, the leaves suddenly began to turn yellow, and many people thought that it was a root or a root knot nematode that there was a problem with the roots. So in this case, we should also check whether the trunk has powdered wood chips and whether the bark has dried up.
The harm of Tianniu cannot be ignored, and the harm is still quite large. Tianniu larvae mainly eat citrus trunks and roots, hindering the transmission of nutrients and water in the tree, and the damage to the tree will cause the yield of adult hanging fruit trees, and in severe cases, it will fall off large areas of leaves, fruit shedding, plant yellowing, and withering. After adult insects are feathered, some need to supplement nutrition, they will eat pollen, young branches, young leaves, bark, sap or fruit, etc., and the growth of trees will deteriorate and the use value of wood will become lower.
Early prevention:
When clearing the garden in winter, we should remove weeds from the ground to reduce the source of insects. Sprinkle a circle of quicklime powder around the tree tray, paint the trunk white, or use quicklime + sulfur powder, the effect is better. Because May and June is the high incidence period of tianniu, we can use chlorpyrifos and mix water with 1000 times the liquid to pour around the canopy. Or spraying with 3% thiaceroline suspension agent can also play a good role in prevention and control.
Manual capture:
If we find that the trunk has powdered wood chips, we can directly cut the bark with a knife, find the pupae, and hook it with wire. Or use a black whirlwind to spray at the worm hole, and then directly step on the larvae after treatment, "turning into spring mud to protect the flowers" as fertilizer, simple and rude. (It is understood that the larvae protein is very rich, collected in some places, fried and eaten directly)
Post-hazard wound management:
Because the trunk wounds that have been harmed by the Tianniu are easily infected by germs, it will lead to diseases such as glue and foot rot. So after we finish dealing with Tianniu, we should treat the wound in time, we can use carbendazim or bacillus 800 to 1500 times liquid to apply to the wound, and then wrap it with film or black electrical tape. That's it.
Since the whole tree is relatively weak after being harmed by the Tianniu, we should supplement the quick-acting fertilizer in time to let the tree resume growth as soon as possible. Or foliar spray with shimanin + peptide amino acids to increase the immunity and disease resistance of the tree.
summary
For the harm of tianniu, we must first prevent it in advance, and we can smear the trunk with quicklime. Secondly, it is also necessary to be able to manually grasp and medicate prevention. In the trees that have been endangered, after we get rid of the tianniu, we should supplement the tree in time and strive to raise the tree well, so that our orchard can achieve high yield and high quality fruit and meet the market demand.