Northeast Region Certified Crop Adviser (NRCCA) Study Resources

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In This Section

• Introduction
• PO 25 Plant nutrient sources
• PO 26 Form and analysis of nitrogen sources
• PO 27 Form and analysis of phosphorous sources
• PO 28 Form and analysis of potassium sources
• PO 29 Form and analysis of calcium or magnesium sources
• PO 30 Commercial fertlizer terms
• PO 31 Nutrient terms
• PO 32 Calculating fertilizer application rates
• PO 33 Calculating manure application rates
• PO 34 Fertlizer placement methods
• PO 35 Certifiable organic nutrient sources
• Summary

Competency Area 4: Nutrient Sources, Analyses, Application Methods

PO 35. Recognize certifiable organic nutrient sources.

There are numerous organic fertilization products available.  For complete references and information, the appropriate certification agency should be contacted.  For a list of some organic certified soil amendments, see the following:

• http://omri.org/OMRI_datatable.php
• http://www.baystateorganic.org/locateproducts.html
• http://www.baystateorganic.org/docs/Baystate%20List%20of%20local%20products%20May%202009.doc
• http://attra.ncat.org/organic.html