New Nitrogen and Potassium Calculator for Almond Growers To Improve Nutrient Efficiency

As input costs continue to rise and regulatory pressure around nutrient management intensifies, almond growers are looking for tools that help them apply fertilizers more precisely — without sacrificing yield or tree health. A new Nitrogen and Potassium Calculator, developed through a partnership between the Almond Board of California and UC Davis’ Fruit and Nut Center, is designed to do exactly that.

The calculator helps growers estimate how much nitrogen and potassium to apply, and when to apply it, based on orchard-specific information and expected yield. The goal is straightforward: improve nutrient use efficiency, reduce unnecessary applications, and limit money spent on product the crop doesn’t need. CLICK HERE to check out the calculator.

The calculator reflects more than a decade of almond production research and builds on guidance already familiar to many growers, including the Almond Board’s Nitrogen Management Guide. “We have been working on this topic for about 20 years,” says Sebastian Saa, Associate Director of Agricultural Research at the Almond Board of California. “This calculator reflects the latest of our thinking and includes potassium calculations, which we had not done before.”

Rather than requiring users to answer every possible question up front, the calculator uses a stepwise process. Growers can enter basic information, such as orchard age and expected yield, to generate a preseason nutrient plan. As the season progresses and more data becomes available, the same plan can be revisited and refined.

Yield plays a central role in the calculation, but the tool also accounts for nutrient contributions from other sources, such as irrigation water or organic amendments, helping growers avoid double-counting nutrients they already have. “How much to apply doesn’t only depend on yield,” Saa adds. “If you use soil amendments, some of those amendments contain nitrogen and thus reduce the need for fertilizer. All this is included in the calculator.”

For more, continue reading at almonds.org.