![]() Selected trade names and manufacturers of special purpose adjuvants. The liquid that is sprayed over the top of a crop, weeds, or insect pest often will contain both formulation and spray adjuvants. Broadly defined, "an adjuvant is an ingredient that aids or modifies the action of the principal active ingredient." The use of adjuvants with agricultural chemicals generally falls into two categories: (1) formulation adjuvants are present in the container when purchased by the dealer or grower and (2) spray adjuvants are added along with the formulated product to a carrier such as water. should consider percent active ingredient as well as cost.Īdjuvants are commonly used in agriculture to improve the performance of pesticides.should be primarily based on herbicide label. ![]() application rate varies depending on product.generally is used in combination with surfactants or crop oil concentrates.ammonium sulfate can reduce problems with hard water.improves the effectiveness of weak acid-type herbicides (e.g., Accent, Classic, Pursuit, Basagran, etc.).can increase herbicide activity on certain weed species such as velvetleaf and certain grasses.Vegetable oil concentrates serve the same function as crop oil concentrates but are derived from vegetable-based oil. is applied at 1 to 3 pt/acre or 1% volume/volume.commonly is used with post-grass herbicides and atrazine.increases herbicide penetration and reduces surface tension.contains petroleum-based oils plus some nonionic surfactant.is applied at ½ to 2 pt/acre or 0.25% volume/volume.includes nonionic, anionic, cationic, and organosilicones.primarily reduces the surface tension between the spray droplet and the leaf surface.include surfactants, crop oil concentrates, nitrogen fertilizers, spreader-stickers, wetting agents, and penetrants.can alter the physical characteristics of the spray solution.can increase herbicide activity, herbicide absorption into plant tissue, and rainfastness can also decrease photodegradation of the herbicide.commonly are used to enhance postemergence herbicide performance.include compatibility agents, buffering agents, antifoam agents, and drift control agents.may alter the physical characteristics of the spray solution.widen the range of conditions under which a given herbicide formulation is useful.Spray adjuvants are generally grouped into two broad categories-activator adjuvants and special purpose adjuvants. An adjuvant is any substance in a herbicide formulation or added to the spray tank to improve herbicidal activity or application characteristics.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |