Which medicine is the most effective for killing trees?

The most effective medicine to kill trees:

First, fenoxaprop-p-ethyl+glyphosate.

Fenoxaprop-p-ethyl is a powerful pesticide, which is very effective for some old and difficult-to-remove dead leaves and stems. The killing ability of this pesticide is also top in rural areas, and glyphosate can kill some old stems and roots. The combination of these two pesticides can kill some trees and dead trees in farmland, which is very effective.

Second, irrigate the roots with salt water.

With a certain proportion of salt water, it can be dumped at the roots of trees. Using the principle of salt water dehydration, all the water around the big tree roots can be removed, thus killing the tree roots. In order to prevent the waste of salt, in rural areas, people often dig a deep pit about 1 m from the root, pour a lot of salt into it, and then cover it with mud without adding water, because the added salt water is easy to lose during soaking, which will waste a lot of salt water and fail to achieve the effect, so the method of adding salt is very direct.

The third kind, burning roots.

Trees are afraid of fire, which is a natural law. We can use this feature to dig a hole around the tree, pour in quicklime, and then pour in a certain proportion of water. When lime meets water, it releases a lot of heat, which is enough to burn the root tissue of trees, and its roots will continue to absorb nutrients and water, thus hindering its growth and eventually the trees will die.

Fourth, sulfuric acid and hydrochloric acid.

The acid released by sulfuric acid and hydrochloric acid can effectively destroy the pH value of the roots of big trees, and high concentration sulfuric acid can directly burn the branches of the roots of big trees, making them unable to continue to grow, so the big trees will wither until they slowly fall down.

Fifth, cyclic azinone.

Cyclozinone is a systemic selective herbicide, which has low toxicity to people and animals and is safe to use. It has strong killing effect on most woody plants. When herbicides are used to kill big trees, the topsoil at the root of the tree roots can be dug up to expose a part of the root system, and then each tree with a diameter of 10cm is sprayed with 8- 10 ml of 25% water solvent. Under normal circumstances, trees will slowly die after half a month.