Factors such as environmental conditions,application equipment,chemical propertiesof the active ingredients,cost,availability and cost of additives,safety considerations dictate the forms in which herbicides arr formulated.Herbicides are formulated in form of salts,water soluble concentrates,wettable powders,flowables,emulsifiable concentrates,granules and pellets
HERBICIDE CONCENTRATION
This is simply the amount of active ingredient of an herbicide in a given quantity of the herbicide.it is expressed in grams per litre .for wettable powders,it is expressed as %WP
The concentration of the active ingredients in a given type of herbicide is easily discernible from the information label on the herbicide container.