Fertility Management

Developing testing protocols to assure the quality of fertilizer materials for organic agriculture

The organic industry is on track for a six-fold increase in the next five years, having grown from $6.1 billion in sales in 2000 to $29.2 billion in sales in 2011 (4.2% of total food sales in the U.S that year). Consumer demand continues to drive steady growth of this sector, which is indicated by average growth of 8% per year since 2002.

Measuring Active Carbon to Predict Seasonal Nitrate Mineralization on Organic Farms

Increasing organic matter in soils is one way to build soil heath. Cover cropping, compost, and manure additions increase soil organic matter and improve the soil’s ability to hold and supply nutrients, water, and air to plants and animals. Soil organic matter provides a bank of nutrients, including nitrogen, that are made available to plants through a process called mineralization.

Organic Seed Production Guides Help Fill Knowledge Gap


Production guides for organic carrot, lettuce and beet seed

Coordinator: Micaela Colley, Organic Seed Alliance, Port Townsend, Washington
Stakeholders: U.S. organic vegetable producers interested in producing organic vegetable seed


Subscribe to Fertility Management