stems show long, dark brown streaks. The vascular tissue in the tubers becomes grey-brown and the tuber eyes also turn grey-brown. This disease can be…
night. The forewings are grey-brown suffused with a dark brown or black. The head and thorax are brown and the abdomen grey-brown. The forewings have…
They are at first a shiny yellowish white, with their colour changing to brown just before the larvae emerge. The cotton bollworm (Helicoverpa…
they are more elongated. The lesions are light brown, sunken and surrounded by a dark brown to red-brown border. The first infection is often on the…
leaf to turn brown and curl up. A typical indication of an attack of broad mite ( Polyphagotarsonemus latus ), is the appearance of dark brown edges…
Alternaria solani causes small green to dark brown spots to occur on leaves. Those spots then turn into dark brown angular lesions with a yellow halo…
of up to 1 mm. The body is pale with a clearly visible brown dorsal shield, brown legs, and brown mouthparts. The females are larger than the males,…
they become brown and brittle. Badly affected tomato leaves and stems lose their trichomes (leaf hairs). Affected stems turn a rusty brown colour, and…
pale white with a brown oval dorsal shield and brown legs. The larvae are white. Protonymphs and deutonymph are pale white with a brown shield, more…
Within a few days, the spots become a few centimetres in size and turn brown with light grey centres. These spots enlarge further and the tissue…
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