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This tiny insect causes damage to plants through feeding and transmitting plant diseases. The silverleaf whitefly feeds on its host plants by piercing the phloem or lower leaf surfaces with its mouth and removing nutrients. Affected areas of the plant may develop chlorotic spots, whither, or drop leaves.
Pyrethrins have shorter environmental persistence than synthetic pyrethroids because their chemical structure is more susceptible to the presence of UV light and changes in pH. [ citation needed ] The use of pyrethrin in products such as natural insecticides and pet shampoo, for its ability to kill fleas, increases the likelihood of toxicity in ...
The light organ of P. pyralis is composed of two layers: a layer of refractile cells on the dorsal side and a photic layer with light-producing cells on the ventral side. [28] The light organ (specifically the photogenic layer) is supplied with numerous tracheal branches, which are thought to provide the required oxygen for light production. [28]
May attract cats. Chamomile: repels flying insects [4] Chives: repels carrot fly, Japanese beetle, [2] and aphids [3] Chrysanthemums: repel roaches, ants, the Japanese beetle, ticks, silverfish, lice, fleas, bedbugs, and root-knot nematodes [2] Citronella grass: repels insects, may deter cats [5] Clovers: repel aphids and wireworms [3] Common ...
Light traps are widely used to survey nocturnal moths. Total species richness and abundance of trapped moths may be influenced by several factors such as night temperature, humidity and lamp type. [3] Grasshoppers and some beetles are attracted to lights at a long range but are repelled by it at short range. Farrow's light trap has a large base ...
They are active against types of insect pests, (e.g. lepidoptera coleoptera, diptera) in agriculture, [7] [1] as well as being used against termites and animal health pests such as fleas. [8] BPUs have low mammalian toxicity (diflubenzuron is approved by the WHO for treatment of drinking water as a mosquito larvicide) [ 5 ] but they are highly ...
In this case, they use luminol and hydrogen peroxide. The iron from the blood acts as a catalyst and reacts with the luminol and hydrogen peroxide to produce blue light for about 30 seconds. Because only a small amount of iron is required for chemiluminescence, trace amounts of blood are sufficient.
In push-pull agricultural pest management, napier grass or signal grass (Brachiaria brizantha) are used as trap crops to attract stemboring moths such as Chilo partellus. Trap crops can be planted around the circumference of the field to be protected, which is assumed to act as a barrier for entry by pests, or they can be interspersed among the ...
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