Frequently Asked Questions about "Going Organic"
Why do legume inoculants have to be approved for organic systems?
Legume inoculant contains Rhizobia
bacteria which build colonies on legume roots. These bacteria are
responisble for fixing nitrogen from the atmosphere through a symbiotic
relationship with the plant. Different species of bacteria are specific
to certain groups of legumes. Although Rhizobia can persist in the soil
for many years, inoculation is recommended for new legume plantings
because this low cost input will usually boost nitrogen fixation and
crop yields.
The problem is that some Rhizobia have
been genetically altered in attempts to improve nitrogen fixation.
Furthermore, some inoculants contain peat-based carriers which have
been irradiated and others have been grown on nutrient substrates which
may contain GMOs. Regrettably, much of this information is considered
proprietory and manufacturers may choose not to disclose it. Certifiers
have no choice but to permit only those products with full disclosure
of contents.
Organic growers must be especially
careful when buying legume inoculants and obtain written confirmation
from the manufacturer or their certifier that a particular inoculant is
acceptable. They should not rely on verbal assurances from suppliers.
Some pre-inoculated legume seed may also contain prohibited substances.
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