posted 21 Aug 2012 10:51 by Gregory Reynolds   [ updated 21 Aug 2012 11:07 ]

 

The cranberry field trip was quite interesting in spite of it being scorching hot and humid outside. In addition to learning about production practices, we saw several diseases, including a severe dodder infestation, Phytophthora root rot, funky flower, and fairy ring. Fairy ring is caused by a new Helicobasidium species which, along with being a plant parasite, acts as a mycoparasite and grows on rust as an alternate host. Management of the disease may be achieved through treating weeds with fungicides, which is the first time I have ever heard of using chemical control on weeds for anything other than killing them. Very unique system.

Dodder (Cuscuta gronovii)                                        Fairy ring (Novel Helicobasdium spp.)                    Weeds filling in areas killed by Phytophthora root rot