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…
brassicae) has grey-brown to black forewings, with a kidney-shaped white-rimmed marking in the middle. The hindwings are light brown with a rather…
predominantly brown-gold with two conspicuous droplet-shaped white marks on the forewing that sometimes overlap each other. The hindwings are brown.…
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…
the tomato pinworm The eggs are whitish in colour to start with, then turn brown or orange as they develop and can be found on the underside of the…
occur, which later turn brown and may merge. The leaves wilt and curl upwards, often starting at one side of the plant. They turn brown but don’t fall…
first yellow and then turn brown. On the underside of the leave fluffy growth appears which is first white and later turns grey-brown. This is…
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,…
dark yellow or brown.The colour of the adults often depends on the crop in which they occur (e.g. on cucumbers they are often yellow-brown, on…
Mycosphaerella cucumis in cucumber causes brown lesions on the foot and higher up on the stem. On the lesions, golden-brown gummy drops occur, hence…
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