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Waynette from Greenville, Tx writes

How long do I need to apply before rainfall for Atrazine to be fully effective?

Rainfall imminant and spraying with Atrazine


Per the product label for Southern Ag Atrazine Weed Killer for St. Augustine Grass: Rain or water within 2 or 3 days of application may decrease the effectiveness on emerged weeds. However, for the control of weeds from seeds, rainfall or watering is necessary within 7 to 10 days after treatment

Answer last updated on: 03/07/2016

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