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The larvae of fungus gnats live in the soil where they feed on fungi and organic matter, but they also eat plant roots. The larvae are thin maggots, with a shiny black head and long, whitish-to ...
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The adults can live up to 10 days and lay up to 200-300 eggs [8] at a time in the moist top layer of the soil. These eggs will typically hatch within 4 days and progress through the cycle. The pupa stage also consists of about 4 days, then adult gnats emerge and begin the whole process again. [9]
Many areas in the Salinas and Pajaro Valleys are unable to grow lettuce due to the high levels of Verticillium dahliae in the soil. [13] Potatoes grown in Verticillium infested soils may have a reduced yield between 30–50% compared to potatoes grown in "clean" soil. Verticillium wilt has also caused a shift in peppermint cultivation from the ...
Removing blighted trees to control the disease was first attempted when the blight was discovered, but this proved to be an ineffective solution. Scientists then set out to introduce a hyperparasitic hypovirus into the chestnut blight fungus. The trees infected with virus-treated fungus responded immediately and began to heal over their cankers.
Rhizoctonia solani root rot on corn roots, magnified 0.63X. Damping off can be prevented or controlled in several different ways. Sowing seeds in a sterilized growing medium can be effective, although fungal spores may still be introduced to the medium, either on the seeds themselves or after sowing (in water or on the wind).