Classification of Herbicides on the Basis of Residual Effect

Classification of Herbicides on the Basis of Residual Effect

a Short Persistant Herbicides:

Residual effect remains in the soil upto a week.
E.  g Paraquat, diaquat, Amitrole, DSMA, DNBP.

b. Medium Persistant Herbicides:

Residual effect remains in the soil for upto 2 to 6 weeks.

c. Very Long Persistant Herbicides:

Residual effect remains in the soil for few months even years. E. g Prometon, Fenuron, Fenac, Silvex, Boron.

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