In the senescent tissue, the resting mycelium or the microsclerotia are formed. The spread of the fungus by mycelium growth is limited. Dispersal from…
mycelium cells which are resistant to desiccation) or mycelium. Zoospores are formed from the overwintering structures which infect the host.…
rose aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction…
potato aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. When reproduction is…
Cotton aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses…
but don’t fall off. On stems and shoots light stripes form, which then tear, allowing cankers to form. On tomato leaves, water-soaked lesions occur,…
peach aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. When reproduction is…
Hemiptera Bugs What are bugs? Heteropteran bugs form a group in the order Hemiptera , a highly diverse group of insects, containing both harmful and…
loose silk cocoon is spun and two or three days later a red-brown pupa is formed, which gradually turns a glossy black. The moths are nocturnal,…
from its egg, so that its mines join to form small plates. In various other crops one finds intermediate forms of tunnelling between these ‘plate…
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