NJL Soil Management Attra National Organic Program Regulations

A Publication of ATTRA, the National Sustainable Agriculture Information Service 1-800-346-9140 www.attra.ncat.org By Barbara C. Bellows NCAT Agriculture Specialist NCAT 2005 Section 205.203(b) Section 205.203(c) and (d) 9 Monitoring Practices for Section 205.203 ATTRA is the national sustainable agriculture information service operated by the National Center for Appropriate Technology, through a grant from the Rural Business-Cooperative Service, U.S. Department of Agriculture. These...

References

Liebman, Matt, and Elizabeth Dyck. 1993. Crop rotation and intercropping strategies for weed management. Ecological Applications. Vol. 3, No. 1. p. 92-122. Abstract at www.sarep. ucdavis.edu NEWSLTR v5n4 sa-13.htm 2. Staff. SAN. 1998. Managing Cover Crops Profit ably. Second Edition. Handbook Series Book 3. Sustainable Agriculture Network SAN . Belts-ville, MD. 3. Ferguson, Charles, and Bala Rathinasabapathi. 2003. Allopathy How plants suppress other plants. HS944. University of Florida IFAS...

Monitoring nutrient mineralization

As mentioned above, you can use standard soil and nutrient mineralization tests to monitor soil nutrient availability. However, organic nutrient management relies not only on nutrients available at the time of soil sampling but also on the nutrients released through mineralization during the growing season. Unfortunately, there is no easy or inexpensive test that assesses when, which, or how many nutrients are released from crop residues or mineralizing organic matter. Instead, you will need to...

Improve biological properties of soil

Biological Properties Soil

Improving soil physical and chemical properties is important for both conventional and organic production, but improving biological properties is particularly important for organic production. Producers describe soil biological health in terms of earthy smell, soil crumbliness, and greasy feel. Soil scientists measure soil biological health in terms of microbial biomass, microbial communities, and rate of organic matter decomposition. Organic production relies on nutrients released through the...

Monitoring soil nutrient levels

A good nutrient management plan involves on-going monitoring of soil nutrients. You can request a standard soil test through your Cooperative Extension Service. These tests provide an assessment of plant-available nutrients, as well as soil acidity or alkalinity pH , nutrient holding capacity CEC, or cation exchange capacity , and trace sub stances such as sodium Na and boron B that may be present at toxic levels. Organic producers and inspectors should use these tests to Determine levels of...

Management of crop nutrients and soil fertility

Organic soil fertility management is based on feeding the soil a rich, complex diet of plant residues, animal manures, and compost. In contrast, conventional agriculture simplifies crop nutrient and soil fertility management by feeding the plant soluble nutrients. Thus, crop nutrition in conventional agriculture can be managed with three pieces of information 1 the amounts of nutrients used by the crop during the growing season, 2 the amount of plant-available nutrients in the soil, and 3 the...