Blight of pepper

Phytophthora capsici Blight of pepper General Phytophthora capsici is an oomycete plant pathogen that causes blight and fruit rot of peppers and other important commercial crops. Life cycle and appear

Pea blight, leaf and pod spot

Ascochyta pisi Pea blight, leaf and pod spot General Ascochyta pisi is a fungal plant pathogen that causes A scochyta blight on pea (leaf blight or pea blight) and lesions of stems, leaves, and pods (

Bacterial spot

Xanthomonas vesicatoria Bacterial spot General Xanthomonas vesicatoria is a bacterium that causes bacterial leaf spot on peppers and tomatoes. Life cycle and appearance of Bacterial spot Xanthomonas v

Apple collar rot

Phytophthora cactorum Apple collar rot General Phytophthora cactorum is a plant pathogen that causes root rot, rhizome rot of strawberry, apple rot, apple collar rot and crown rot. It has an extremely

Verticillium wilt

Verticillium spp. Verticillium wilt General Verticillium species are non-specific plant pathogens. Many species are saprophytes, V erticillium albo-atrum and Verticillium dahlia e are the most importa

Pierce's disease of grapevine

Xylella fastidiosa Pierce's disease of grapevine General Xylella fastidiosa is a gram-negative bacterium which is limited to xylem tissue. It has many hosts, many of which show minor or no symptoms. M

Black leg of seedlings

Pythium ultimum Black leg of seedlings General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress, caused

Cottony soft rot

Sclerotinia sclerotiorum Cottony soft rot General Sclerotinia sclerotiorum, also known as cottony soft root, is a plant pathogenic fungus. It has a very wide range of host plants. Life cycle and appea

Early blight

Alternaria solani Early blight General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary infection

Angular leaf spot

Xanthomonas fragariae Angular leaf spot General Xanthomonas fragariae is a leaf spot disease found in strawberry. Life cycle and appearance of Angular leaf spot Xanthomonas fragariae overwinters in pl