Here's info from U Ariz http://ag.arizona.edu/PLP/plpext/diseases/vegetables/onion/Garlicrust.htm And here's info from U of CA http://www.ipm.ucdavis.edu/PMG/r584101211.html Looks like a 2- to 3-year rotation is your bet bet. |
Here is a link that might be useful: infor from Univ CA