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Farm Machinery
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PWM on sprayer
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<blockquote data-quote="Brisel" data-source="post: 7239419" data-attributes="member: 166"><p>I slightly wish we'd specced PWM on our last new 36m sprayer. Curving headlands are hard to dose correctly and that's how weeds seem to get into the field as you need full rate herbicide for control for some. We could be breeding resistance into them with under dosing and overdosing kicks the hell out of the crop. </p><p></p><p>Most of the cost is down to the additional hardware required to modulate the flow. That has to talk to rate controllers etc too. </p><p></p><p>I can't see any reason that dribble bars wouldn't work with PWM, though it's a bit crude where you've got some low pressure piping between the metering unit and the bar nozzles. It's air induction nozzles that don't work with PWM as it disrupts the air flow into the mixing part of the nozzle body.</p></blockquote><p></p>
[QUOTE="Brisel, post: 7239419, member: 166"] I slightly wish we'd specced PWM on our last new 36m sprayer. Curving headlands are hard to dose correctly and that's how weeds seem to get into the field as you need full rate herbicide for control for some. We could be breeding resistance into them with under dosing and overdosing kicks the hell out of the crop. Most of the cost is down to the additional hardware required to modulate the flow. That has to talk to rate controllers etc too. I can't see any reason that dribble bars wouldn't work with PWM, though it's a bit crude where you've got some low pressure piping between the metering unit and the bar nozzles. It's air induction nozzles that don't work with PWM as it disrupts the air flow into the mixing part of the nozzle body. [/QUOTE]
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PWM on sprayer
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