Question

A student was to apply a compound fertilizer 5:20:10 at the rate of 200 kg per hectare on her Agriculture project plot measuring 3 by 4 meters.

1. What do the figures 5 and 20 in the compound fertilizer above stand? 
2. Calculate the amount of fertilizer she would require for the plot

Answer 1

1.  
   1. 5- Ratio of Nitrogen
   2. 20- Ratio of P₂O₅ 
2. 1 ha =200kg 
   The plot thus requires; 12×200       = 0.24kg of the compound fertilizer
                                                10000