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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.
Tomato, tobacco, legumes, cucurbits, sweet potatoes and banana are a few of the most susceptible plants, but it also infects other herbaceous plants. [2] F. oxysporum generally produces symptoms such as wilting, chlorosis , necrosis, premature leaf drop, browning of the vascular system, stunting and damping-off.
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Fungus gnats are small, dark, short-lived gnats, of the families Sciaridae, Diadocidiidae, Ditomyiidae, Keroplatidae, Bolitophilidae, and Mycetophilidae (order Diptera); they comprise six of the seven families placed in the superfamily Sciaroidea.
Sooty mold is commonly seen on the leaves of ornamental plants such as azaleas, gardenias, camellias, crepe myrtles, Mangifera and laurels. Karuka is affected by sooty mold caused by Meliola juttingii. [6] Plants located under pecan or hickory trees are particularly susceptible to sooty mold, because honeydew-secreting insects often inhabit ...
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 ...
Since 1925, commercial Cucumis melo (cantaloup and muskmelon) production has been engaged in a biological "arms race" against cucurbit powdery mildew (CPM) caused by the fungus Podosphaera xanthii, with new cultivars of melons being developed for resistance to successively arising races of the fungus, identified simply as race 1, race 2, etc ...
However, in hydroponic systems inside greenhouses, where extensive monocultures of plants are maintained in plant nutrient solution (containing nitrogen, potassium, phosphate, and micronutrients) that is continuously recirculated to the crop, Pythium spp. cause extensive and devastating root rot and is often difficult to prevent or control.