• Beet armyworm

  only at 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 [...] caterpillars . Their colour gradually changes to yellow, green, brown or even black. The colour and pattern of the caterpillars is highly variable and depends [...] band running the length of the body on either side, above which there is a black dot on each segment. The young caterpillars live in groups and spin loose

• Impatiens thrips

  of thrips is relatively large. Both males and females are dark brown to black in colour with orange pigmentation between the segments, and the dark wings [...] surrounding tissue to die. The resulting silver-grey patches on leaves and the black dots of their excreta indicate their presence in the crop. The vigour of

• Cotton bollworm

  older caterpillar is extremely variable, and may be green, straw yellow, black, or pinkish / reddish brown. Full grown larvae are 30 to 40 mm long. The [...] The grey-green males are smaller. The forewings are edged with a line of black spots, and the hindwings in both sexes are cream with a dark brown band around

• Carrot

  vegetable and comes in a variety of colours, ranging from the regular orange to black and purple, but also red, yellow and white. The carrots which are produced

• Soybean

  5-11 mm in diameter. Soybean seeds vary greatly in size and the hull can be black or brown, but also blue, yellow or green. When planting soybean plants, there

• Aphids

  end. Color: Aphids can be a variety of colors, including green, yellow, black, brown, pink, or red, depending on the species and their stage of development [...] called honeydew, which can attract other insects and lead to the growth of a black sooty mold. Aphids life cycle Aphid damage Depending on the species, aphids [...] secreted in the form of honeydew, making the crop and its fruit sticky. Black fungal moulds (such as Cladosporium spp. and Capnodium spp.) grow on this

• Western flower thrips

  colour. They range from almost white through yellowish orange to almost black. Western flower thrips (Frankliniella occidentalis) usually pupate in the [...] surrounding tissue to die. The resulting silver-grey patches on leaves and the black dots of their excreta indicate their presence in the crop. The vigour of

• Anagyrus vladimiri

  mm in length and brown, with distinctive black and white banded antennae. The male is 0.8 mm in length and black in colour. Anagyrus vladimiri is arrhenotokous;

• Bacterial soft rot, bacterial stem rot

  in plants that are infected by other pathogens. The bacteria that causes black leg in potato is a different subspecies. How to prevent Bacterial soft rot

• Two-spotted spider mite

  orange, light yellow or light green to dark green, red, brown, or almost black.