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Sprayer calculation question
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<blockquote data-quote="Brute 23" data-source="post: 1684988" data-attributes="member: 6291"><p>Can some one double check my math here?</p><p></p><p>I bought one of those little sprayers you pull behind a mower that has a wand and a boom with 2 nozzles, 6ft of coverage, 2.2gpm pump. I need to be able to spray a long road and some other gravel areas with some form of glyphosate. For now using Eraser Max. It says 7.4 oz per 1-10g of water, maz rate, per 1000 sq ft.</p><p></p><p>I found a formula on line that says</p><p></p><p>GAL/1000 sq ft = (136 x GPM (per nozzle))/ MPH x W (inch))</p><p></p><p>If I put in 5mph, 36 in, and assume 1.1gpm per nozzle, I'm getting 0.82 gal/ 1000 sq ft/ per nozzle? Does that sound right? That would get me real close to 2 gal with 2 nozzles correct?</p><p></p><p>With that low of a rate I guess I should mix the 7.4 oz to 1g, not the 10 gallons?</p><p></p><p>Also if yall have any suggestions for a roundup type product or application to get good results I'm game. Thought about adding a little surf to it. These are areas we dont want grass for years to come.</p><p></p><p>Thanks</p></blockquote><p></p>
[QUOTE="Brute 23, post: 1684988, member: 6291"] Can some one double check my math here? I bought one of those little sprayers you pull behind a mower that has a wand and a boom with 2 nozzles, 6ft of coverage, 2.2gpm pump. I need to be able to spray a long road and some other gravel areas with some form of glyphosate. For now using Eraser Max. It says 7.4 oz per 1-10g of water, maz rate, per 1000 sq ft. I found a formula on line that says GAL/1000 sq ft = (136 x GPM (per nozzle))/ MPH x W (inch)) If I put in 5mph, 36 in, and assume 1.1gpm per nozzle, I'm getting 0.82 gal/ 1000 sq ft/ per nozzle? Does that sound right? That would get me real close to 2 gal with 2 nozzles correct? With that low of a rate I guess I should mix the 7.4 oz to 1g, not the 10 gallons? Also if yall have any suggestions for a roundup type product or application to get good results I'm game. Thought about adding a little surf to it. These are areas we dont want grass for years to come. Thanks [/QUOTE]
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