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Aulacaspis yasumatsui, or cycad aulacaspis scale (CAS), is a scale insect species in the genus Aulacaspis that feeds on cycad species such as Cycas revoluta [1] or Dioon purpusii (Purpus' cycad). Other common names include the cycad scale, the sago palm scale, [2] and the Asian cycad scale. [3] This is a serious pest of cycads which can kill ...
The scale's activities can result in stress for the plant, causing reduced growth and giving it a greater susceptibility to plant diseases. [12] Mutualistic Formica fusca ants tending a herd of mealybugs. Scale insects in the genus Cryptostigma live inside the nests of neotropical ant species. [13]
Notable early examples of live plant harbored pests—such as beech scale, chestnut blight, and white pine blister rust—led to the Plant Quarantine Act of 1912 and regulations from the US Department of Agriculture in 1919. Despite these and subsequent regulations, insects and pathogens have continued to be introduced through live plants.
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Black rot on orchids is caused by Pythium and Phytophthora species. [1] Black rot targets a variety of orchids but Cattleya orchids are especially susceptible. [1] Pythium ultimum and Phytophthora cactorum are known to cause black rot in orchids. [1] Pythium ultimum is a pathogen that causes damping-off and root rot on plants. [2]
The large spikes of flowers are very impressive, and the large strappy leaves are interesting even when the plant isn’t blooming. Boat orchids prefer humidity around 50% and bright, indirect light.
Note also the fuzzy white scale insect in the center. Durians are an agricultural product affected by many plant pathogens and pests . Most of the information here concerns Durio zibethinus , the major commercial species, but a dozen species in the genus Durio are edible durians, and several of those are also grown commercially and these ...
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related to: scale infestation on orchids leaves treatment plant problems near me today