Due to the deep distribution of apple tree roots, and herbicides are generally absorbed by soil particles on the soil surface of 5-10 cm, in general, the use of herbicides can be appropriately larger than the amount of pesticides used in crop fields to improve the efficacy. Extend the residual period.
There are many types of herbicides suitable for weeding in apple orchards, mainly including:
1. Stem and leaf treatment agents such as glyphosate and glufosinate ammonium. These herbicides should be sprayed on the stems and leaves of the weeds during the vigorous growth period (when the height of the grass is 10-20 cm), ********* , Weeding thoroughly, but only effective for weeds that have emerged, there is no residual effect period, and new grasses will soon appear during the rainy season.
2. Trifluralin, atrazine, promethazine, simazine, acetochlor, oxadiazon, pendimethalin, oxyfluorfen and other soil treatment agents, these herbicides should be used in weeds Ground sealing treatment is carried out before the excavation, and the residual effect period is generally about 60 days. The soil moisture has a greater influence on the effect of the soil treatment agent.
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