Question

A researcher who is doing an experiment on fertilizer rate wants to apply nitrogen (N) at 50 kg per hectare and phosphorus (P) at 50 kg per hectare. Assume Urea and Di-ammonium Phosphate (DAP) fertilizers are the only nitrogen and phosphorus fertilizers available in store. The experimental plot size of the researcher is 2000 m 2. Calculate the amount of urea and DAP fertilizers that the researcher has to apply to 2000 m 2 experimental plot size. Assume N is 46% in urea and 18% in DAP and P 2O 5 is 46% in DAP fertilizer. The atomic weight of P is 31 and O is 16.

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