What herbicide can be used in tobacco fields without harming the tobacco?

Overgrown weeds, still growing worse, seemingly about to compete with the tobacco in the field, this situation is not unfamiliar to the vast number of tobacco growers, and at this time the quickest and most convenient method is to use tobacco field herbicide to suppress the weeds in the field. So, what herbicides do not harm tobacco?

1. Herbicides that do not harm tobacco

Herbicides that do not harm tobacco include metolachlor, napropamide, quizalofop-p-ethyl, fluazifop-p-butyl, etc. As long as they are used according to the product instructions, they will not cause harm to tobacco. Among them, metolachlor, also called Dual, is best applied before the weeds germinate, because it is mainly absorbed through the young shoots and conducted upward, thereby inhibiting the growth of young shoots and roots, and it has a very good effect on controlling annual grass weeds.

1. Napropamide is a selective pre-emergence soil treatment agent, also suitable for weed control in tobacco fields. After the weed roots and coleoptiles absorb the solution, cell division and protein formation are inhibited, root growth is affected, and the heart leaves curl and die. When applied under dry soil conditions, the control effect is poor, so after application the soil should be mixed or irrigation should be carried out when the soil is dry.

2. In the national pesticide classification standards, quizalofop-p-ethyl is a low-toxicity herbicide, and for tobacco fields it is a very good tobacco field herbicide. It is absorbed through the weed stems and leaves, conducted both upward and downward, accumulates at the tips and intercalary meristems, inhibits fatty acid synthesis in cells, and causes the weeds to die. Quizalofop-p-ethyl acts quickly, its efficacy is relatively stable, and environmental conditions such as rain, temperature and humidity have little effect on it. It has a very good effect on grass weeds in broadleaf crop fields.