11. It causes plant diseases such as corn ear rot and wheat head blight. 12. Cover crops prevent winter erosion and suppress weed growth and soil-borne plant diseases . 13. Viroids, which cause some plant diseases , are naked snippets of RNA. 14. It fi; ghts against practically all insect species and plant diseases . 15. Rain delayed the winter wheat harvest in June, fostering plant diseases and depressing yields. 16. Application of digestate has been shown to inhibit plant diseases and induction of resistance. 17. Fungi cause the majority of plant diseases , which in turn cause serious economic losses. 18. The whitefly has also been shown to transmit almost 60 other viral plant diseases . 19. Calcium nitrate is also used to control certain plant diseases . 20. Many of the species are plant diseases of major economic importance, causing significant damage.
