Potato aphid

with a dark longitudinal stripe running along the dorsal surface. In green individuals, this stripe is dark green, while in pink specimens it is dark red

Root rot of carrot

the entire surface of the carrot. These spots gradually change into larger dark brown to black lesions of various shapes. The lesions can merge and eventually [...] oridium infection can cause loss of seedlings. The subsurface parts turn dark brown to black, while the cotyledons remain green. During humid spells the [...] temperatures ranging from -3°C to 25°C, with an optimum around 18°C. Lesions are dark brown to black, moist, mostly circular spots 0.5 -1.2 cm diameter that extend

Black root rot of cucurbits

particles. Damage symptoms Phomopsis sclerotioides causes grey-black spots with a dark demarcation line on cucumber roots. The lesions are slightly sunken and are [...] the lesions are light-brown. The lesions can be enclosed by pseudostromata: dark coloured tissue that looks like black stripes. The disease is usually restricted

Apple collar rot

discolouration of the roots. On the foot, dark brown lesions with sharp borders occur. Above the graft and on leaves, dark brown, irregular lesions occur. In

Black rot of carrots

Black rot of carrots ( Alternaria radicina ) causes death of seedlings and dark brown lesions with a yellow halo on leaves, growing into crown rot. Infection [...] spots on leaves, petals and stems. These spots can be distinguished by the dark and brown concentric rings that are caused by sporulation. Species may differ

Pomegranate wilt complex

drooping and drying of leaves and branches. The entire tree dies in few months. Dark greyish brown to black colouration of wood below bark and vascular discoloured

Grape powdery mildew

and discoloured. The powdery pustules subsequently become grey and finally dark coloured. Shredding of flowers and poor fruit set due to floral infections

Sweet pepper

colours ranging from vanilla/white and yellow to orange, green and red and even dark purple and brown. The sweet pepper is a very rich source of vitamin C and

Corn earworm

corn earworm The eggs of corn earworm are a milky-white colour, which turn dark grey before hatching, and have a ribbed spherical shape. The larvae hatch [...] The adults have a brown-coloured body, with a wingspan of 35 to 40 mm and a dark stripe on the side edge of the forewings and hindwings; they live for around

Tomato leafminer

cocoons. Pupae have a greenish coloration at first, and then turn chestnut and dark brown shortly before adult emergence. Adult moths of the tomato leaf miner [...] Tuta absoluta ) are grey-brown with filiform antennae, alternating light or dark segments and recurved labial palps, that are well developed. Black spots