Farm & Garden Calc

Hargreaves reference evapotranspiration (mm/day) from max and min temperature, latitude and day of year.

Livestock feed needed per day and for a period from head count, body weight, dry-matter intake, feed moisture and waste.

Fertilizer product rate and total needed to hit a target N, P2O5 or K2O rate, and all nutrients it supplies.

Growing degree days from daily max and min temperatures: modified corn 86/50 F method or the simple standard average.

Irrigation run time and water volume to apply a depth over an area at a pump or system flow rate and efficiency.

ILLUSTRATIVE lime rate estimate to raise soil pH, by texture, product strength and depth. Not a lab recommendation.

N-P-K analysis of a dry fertilizer blend from components given as analysis:weight, plus elemental P and K.

Plants and seeds needed for an area from row and in-row spacing (grid or triangular), with germination allowance.

Grazing carrying capacity in animal unit months from acres, forage yield, use percent and days, with an optional herd check.

Convert crop yield between bushels per acre and kg per hectare for corn (56 lb), wheat and soybeans (60 lb).