Is there a U.S. version of phytosanitary requirement

Wed, 20 Jan 2010 02:23:51 PST
I found a page on the website introduced by Rodger Whitlock.…

And if I have not realized errorly, not only  the tropical and subtropical crops  ,the soybean, wheat, corn, potato, and some crops which also grow commercially and wildly in temperate area are also the host of Radopholus similis. And there are still some crops which not the host of it.

Best Regards

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