Physical signs your soil needs nitrogen include chlorosis ... or 65 pounds horse manure. The best time to add manure is in the fall. Biosolids are organic materials that have been recycled ...

Researchers looking into effective ways of adding phosphorus (P) to increase soil fertility have saved organic farmers a lot of time and money. In a recent paper in the Canadian Journal of Soil ...

Growing a green manure in winter prevents soil from having nutrients washed away by rain or snow, and some varieties have a fibrous root system that helps to give the soil structure. Clover is a ...

To apply compost or aged manure to your sandy soil, add around 3 to 4 inches of the organic matter over the top of your existing soil and then work it in as much as you can with a tiller.