FOLIAR UPTAKE OF SYSTEMIC COMPOUNDS - PRI NCIPLES AND OPTIMIZATION

Many factors may limit the foliar uptake of organic compounds. A short survey is given of the factors governing the foliar uptake of organic compounds as limited by rates of cuticular penetration. Passive trans port across a lipid membrane like the cuticle is the product of permea bility and driving force. Both terms can be manipulated selectin of ad juvants. Examples appropriate types and amounts are presented which de monstrate how properties of active ingredients, adjuvants and external factors influence penetration rates across bitter orange, pear and St ephanotis leaf cuticles.