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Fungus gnats are a common pest among houseplants.These small flies tend to go unnoticed at first, slowly building their populations by laying eggs on the soil of our container plants.
In houseplants, the presence of sciarids may indicate overwatering; they may be feeding on roots that have been immersed in water too long and are thus rotting, or the gnats may be attracted to fungus growing in saturated topsoil. Consequently, allowing the top two inches of soil [12] to dry may reduce their numbers. [13]
Epidemics occur quickly due to the fast-growing nature of the fungus. After the new strain was discovered and began to destroy spinach fields, testing began in the 1980s with fungicides to control the disease. Research showed that metalaxyl was effective, reducing yield loss from 43% to 1% in treated fields. [153]
It is known to infect 408 plant species. As a nonspecific plant pathogen, [2] diverse host range and ability to infect plants at any stage of growth makes white mold a serious disease. The fungus can survive on infected tissues, in the soil, and on living plants. It affects young seedlings, mature plants, and fruit in the field or in storage.
Most of these are determinate plants that will grow to a certain size. Checking plant labels should provide information on type of tomato, growth type, and ultimate size of the plant.
The endophytic fungi grow in the intercellular spaces of the plants, parallel to the leaves and stems, as elongated and thinly-dispersed branched hyphae. [9] The fungal hyphae penetrates the host plant's embryo and grows along the seeds to infect the new plants that will grow from the seeds, which is a process of transmission that is known as ...
Freezing temperatures make it difficult for plants to get water -- resulting in wilting and death-- while frost damages roots and bitter winds and salt damage make it almost impossible for plants ...
This fungus is mainly of outdoor origin, although it may be from growth on fruits or flowers brought in from outdoors. Some houseplants can be infected by this fungus, such as cyclamen, poinsettia, chrysanthemum, and gerbera. [4] Other species of Botrytis may be present, such as B. peoniae on peonies, B. squamosa on onion, and B. tulipae on tulips.
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