What makes Stratego YLD the best fungicide choice for early season sprays on corn?
Stratego YLD has two active ingredients; each has a broad spectrum of activity on a broad range of fungal pathogens. Additionally, each chemistry has redistribution properties that are key to better protection of a plant that is rapidly expanding.
Virtually all fungicide molecules are active on the plant surfaces that come in contact with the spray solution. If there is systemic movement, the molecules move into the leaves and are carried with water flow through the xylem vessels to the edges and tips of the leaves. However, there is essentially no downward movement. Corn leaves expand from the leaf base, so new tissue coming out of the whorl is left unprotected by most products.
The unique strobilurin chemistry in Stratego YLD quickly binds to the waxy surfaces of the corn plant. This chemistry also has a vapor phase that allows for short distance movement to neighboring surfaces. As new leaf tissue forms, the strobilurin in the vapor phase can move to the expanding tissue and bind to new surfaces.
The triazole chemistry in Stratego YLD, prothioconazole, is the newest triazole on the market and also has unique redistribution properties. As with other typical triazole molecules, some prothioconazole enters the plant, attacks existing fungal infections and moves in the xylem to the edges of the intercepting leaf. What differentiates prothioconazole is how its molecules on the leaf surface are redistributed. While adhering to the leaf, it can move downward with surface moisture on the leaf. The surface moisture, such as dew, serves as a vehicle for prothioconazole redistribution. The orientation of young corn leaves further serves as a funnel, carrying prothioconazole deeper into the whorl where new tissue is emerging. Prothioconazole can enter the new leaves and be transported upward in the xylem to expand the protection of the plant.
This combination of active ingredients provides unsurpassed protection of young, quickly developing corn plants.