Organic nutrient management ... Amendment with KH 2 PO 4 affected brushite (labile phosphorus) most, while the effect of turkey litter compost amendment was on the octacalcium pool. A soil phosphorus ...

Soil fertility is the ability of ... farming systems that incorporate integrated nutrient management. Use of nitrogen-15 lends understanding of the dynamics and interactions between various pools in ...

Before planting, make sure the soil is well-supplied with air, water and nutrients. Aeration must be the first consideration, because plants can’t use nutrients if roots have no air. Poor ...

Photograph by Jim Richardson, National Geographic 5. Soil is alive. Chemical fertilizers, which replace three or four nutrients, are simply not enough to replace the complex system that is soil.