Fertilizer analysis refers to afertilizer’s formulation of the three macronutrients: nitrogen (N), phosphorus (P), and potassium (K). It is commonly referenced as N-P-K. Most bags of fertilizers feature an N-P-K fertilizer analysis of 5-10-5 or 18-9-9.
People also ask
What is a guaranteed analysis of fertilizer?
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.
How do you calculate nutrient content in a bag of fertilizer?
Calculating Nutrient Content. To calculate the pounds of nitrogen in a 50-lb bag of 10-10-10 fertilizer, multiply 50 by 0.10. Do the same for calculating the amounts of phosphate and potash. A 50-lb bag of 10-10-10 contains a total of 15 lbs of nutrients: 5 lbs nitrogen, 5 lbs phosphate and 5 lbs potash.
What is the N-P-K of fertilizer analysis?
Most bags of fertilizers feature an N-P-K fertilizer analysis of 5-10-5 or 18-9-9. Fertilizer analysis is important to gardening because the formula required by plants differs from lawns, perennials, shrubs, trees, and flowers, as well as vegetable and fruit gardens.
What is the ratio of fertilizer?
The ratio of a fertilizer is an important characteristic to understand. The ratio of a fertilizer is the relationship between the N-P2O5 – and K2O content of a fertilizer. The ratio of the fertilizer in the example above is 3-1-2. A fertilizer with a 3-1-2 ratio contains one and a half times as much N as K2O and three times more N than P2O5.