HORTICULTURE SCIENCE
FUNDAMENTALS OF HORTICULTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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15 percent nitrogen, 5 percent phosphate (P2O5) and 10 percent potash (K2O)
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15 percent nitrogen, 5 percent phosphorus and 10 percent potassium
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15 percent nitrogen, 5 percent potash (K2O)and 10 percent phosphate (P2O5)
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15 percent phosphorus, 5percent potash (k2O) and 10 percent nitrogen
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Detailed explanation-1: -The guaranteed analysis (or fertilizer grade) is a listing of nutrients contained in the bag, by weight. The first number of the analysis lists % N, the second number represents % P2O5 (phosphate), and the third number % K2O (potash). The guaranteed analysis of the fertilizer in the above example is: 18-6-12.
Detailed explanation-2: -The fertilizer ratio indicates the proportion of nitrogen, phosphate, and potash in the fertilizer product, and is determined by dividing each of the three numbers in the fertilizer grade (listed on the container) by the lowest number in the grade.
Detailed explanation-3: -Fertilizer grade is an expression referring to the legal guarantee of the available plant nutrients expressed as a percentage by weight in a fertilizer, e.g. a 12-32-16 grade of NPK complex fertilizer indicates the presence of 12 % nitrogen (N), 32 % phosphorous (P2O5) and 16 % potash (K2O).