The concept of this book as described by the author is solely the content of the book raise on the computing fertilizer quantity of single compound and fertilizer mixure for various crops grown or to be grown in per unit area. In addition of the formula based calculations, the list of graded fertilizer and dosages of manure and fertilizer of various crops with mode of application are very useful in the cultivation practices of farming communities / farmers. Hope that our right from the farming communities to the departmental employees and institutional students may be benefited with the utilization of this content. This will be very useful for the fertilizer dealers and agents in specifying the quantity of fertilizer against a particular crops to be cultivated by the farmers. The area under various crops are taken as per the following conversion table : 1 Hectare = 2.5 Acre = 7.5 Bigha 1 Acre = 0.4 Hectare = 3 Bigha 1 Bigha = 0.333 Acre = 0.133 Hectare In this connection it would be wise to mention that the area expressed in bigha in the chart of single fertilizer dosage of various crops are describing the conversion table of 1 hectare = 7.5 bigha.