Plan D
A good choice but not the very best
The cultivation of Japanese oats after the spring barley crop in 2009 resulted in such a decrease in infestation that potato yield loss in 2010 remained restricted. Sugar beet is a poor host for P. penetrans which makes it more suitable as preceding crop for potatoes than maize. The infestation that remained after the cultivation of maize and perennialy ryegrass as green manure crop has been reduced considerably by the sugar beet crop but not to such an extent that there will be no yield loss in the potato crop in 2013. This could have been restricted by row application of granules
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