Circular


Book Description










Compendium of Potato Diseases


Book Description

Disease in the absence of infectious pathogens. Genetic abnormalities. Adverse environment. Nutrient imbalance. Disease in the presence of infectious pathogens. Fungi. Viruses. Mycoplasmas. Insect toxins. Nematodes. Aphids. Seed potato certification.







Bulletin


Book Description




Federal Register


Book Description