## Best answer

Calculating Fertilizer Rates from Nutrient Recommendations Soil test recommendations are given in lb/ac or kg/ha of nutrients. To determine the fertilizer rate for a particular nutrient,multiply the rate of the desired nutrient by 100 and divide by the percentage of the nutrient in the fertilizer.

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### How to calculate soil fertilizer rates?

Soil Fertility Guide Calculating Fertilizer Rates from Nutrient Recommendations Soil test recommendations are given in lb/ac or kg/ha of nutrients. To determine the fertilizer rate for a particular nutrient, multiply the rate of the desired nutrient by 100 and divide by the percentage of the nutrient in the fertilizer.

### What is the rate of fertiliser application for a particular situation?

The rate of fertiliser application for a particular situation should be based on the rate of nutrient required by the plants. fertiliser rate (kg/ha) = required nutrient rate (kg/ha) (% of the nutrient in the fertiliser 100) For example, suppose we have a product containing 46% nitrogen and the desired nitrogen application is 50 kg N/ha.

### How to calculate the phosphorus application rate?

Calculating the phosphorus application rate: For liquid fertilizers, the weight of the fertilizer must be accounted for, because the fertilizer nutrient content is given as percentage by weight. For example, Urea Ammonium Nitrate (UAN), a liquid fertilizer with a grade of 30-0-0 contains 30% nitrogen by weight.

### How to calculate fertiliser rate (kg/ha)?

fertiliser rate (kg/ha) = required nutrient rate (kg/ha) (% of the nutrient in the fertiliser 100) For example, suppose we have a product containing 46% nitrogen and the desired nitrogen application is 50 kg N/ha. fertiliser rate (kg/ha) = 50 kg N/ha (46% N 100) = 50 kg N/ha 0.46 N = 109 kg product/ha