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Pontiac IL | I remember back in college when roundup came out, dating how old I am, the rate by air was less than ground. Asked Marshall McGlamery , weed science professor at U of I, why and he said the more water, the more roundup you need. Water tends to neutrilize the roundup and high ph water was worse. I used with 9 gallon with 4 ph water, post and had the best kill ever with lower recommended rates. | |
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18-20 GPA Water
