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Second: Since there are 43,560 sq ft in an acre, multiply the amount of fertilizer needed per 1000 sq ft by 43,560, then divide by 1000. (4.7 lb fertilizer x 43,560 sq ft) ÷ 1000 = 205 lb of a 16-8-8 fertilizer will be needed per acre.

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.

Grass Needs N Nitrogen fertilizer should be considered for a grass dominant pasture. Research indicates that the first 30 to 50 pounds per acre of nitrogen are used most efficiently and that split applications of this amount generally maximize yield.

Apply no more than 150 pounds to 200 pounds total of N during the growing season. For dryland bermudagrass hay production, a single N application of 200 pounds N per acre in early May appears to be adequate.

A good guideline is to apply 50 pounds of nitrogen per acre at the onset of the spring growing season and then restrict subsequent applications to 30 pounds per acre to match forage growth. The majority of nitrogen should be applied in the spring and the fall.

per acre = 13.6 acres per ton. 2,000 lb./ton ÷ 238 lb. per acre = 8.4 acres per ton. Calculate the fertilizer cost per acre.

Second: Since there are 43,560 sq ft in an acre, multiply the amount of fertilizer needed per 1000 sq ft by 43,560, then divide by 1000. (4.7 lb fertilizer x 43,560 sq ft) ÷ 1000 = 205 lb of a 16-8-8 fertilizer will be needed per acre.

A 50 lb bag of fertilizer will typically cover 5,000 to 10,000 square feet. Re-application should not occur any sooner than every 4 weeks.