USDA Soil Texture Triangle: How to Classify Soil The USDA soil texture triangle classifies soil from the percentages of sand, silt, and clay. In this guide, you’ll learn how the triangle works, how to plot a soil sample, how the 12 USDA texture classes differ, and when a laboratory test is preferable to a field…

Organic vs Chemical Fertilizer: Cost & Yield Compared Last Updated: August 15, 2026 | Next Review: February 2027 A ton of urea puts 920 pounds of nitrogen in the ground for less than half what the same amount of nitrogen costs from compost or manure. That’s the number that pulls most growers toward chemical fertilizer…