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  3. you want to spray metribuzin 75df at a rate of...

Question: you want to spray metribuzin 75df at a rate of...

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You want to spray metribuzin (75DF) at a rate of 0.5 kg ai/ha.

a) how much formulated herbicide will you need for a 40-ha field?

b)If your sprayer is calibrated to deliver 180 L/ha and your tank hold 1,200 liters, how much herbicide will you add to each tank?

c) How many times will you have to fill your tank to spray the 90 ha?

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