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How can I adjust and calibrate seed and fertilizer rates?

April 26, 2017calibrate fertilizer rates seed

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How can I adjust and calibrate seed and fertilizer rates?

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Seed drills of different make are fitted with seed metering devices to increase of decrease the seed rates with in specified limits. First fix the seed metering device at appropriate seed rate delivery notch. Now rotate the drive wheel to separately collect seed and fertilizer in polythene bags to determine the average seed fertilizer amount per unit distance traveled by the drive wheel. Calculate the seed rate using formula given in the suppliers manual and again refine the adjustment if needed.