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Insect Control: Biological and Synthetic Agents - Index of

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Table 14 Continued<br />

Compound Chemical structure <strong>Biological</strong> effects Uses to control pest species<br />

Bupr<strong>of</strong>ezin Probable chitin synthesis <strong>and</strong><br />

prostagl<strong>and</strong>in inhibitor. Hormone<br />

disturbing effect, leading to suppression<br />

<strong>of</strong> ecdysis. Persistent insecticide <strong>and</strong><br />

acaricide with contact <strong>and</strong> stomach<br />

action; not translocated in the plant.<br />

Inhibits molting <strong>of</strong> nymphs <strong>and</strong> larvae,<br />

leading to death. Also suppresses<br />

oviposition by adults; treated insects lay<br />

sterile eggs<br />

Cyromazine Contact action, interfering with molting <strong>and</strong><br />

pupation. When used on plants, action is<br />

systemic: applied to the leaves, it<br />

exhibits a strong translaminar effect;<br />

applied to the soil, it is taken up by the<br />

roots <strong>and</strong> translocated acropetally<br />

<strong>Insect</strong>icide with persistent larvicidal action against<br />

Homoptera, some Coleoptera, <strong>and</strong> also Acarina.<br />

Effective against Cicadellidae, Deltocephalinae<br />

(leafhoppers), <strong>and</strong> Delphacidae (planthoppers) in rice, at<br />

50–250 g ha 1 ; Cicadellidae (lady beetle) in potatoes;<br />

Aleyrodidae (whitefly) in citrus, cotton, <strong>and</strong> vegetables,<br />

at 0.025–0.075 g ha 1 ; Coccidae, Diaspididae (scale<br />

insects) <strong>and</strong> Pseudococcidae (mealybugs) in citrus <strong>and</strong><br />

top fruit, at 25–50 g hl 1 ; Tarsonemidae in vegetables, at<br />

250–500 g ha 1 . Suitable for IPM programs<br />

<strong>Control</strong> <strong>of</strong> Diptera larvae in chicken manure by feeding to<br />

poultry or treating the breeding sites. Also used to<br />

control flies on animals. Used as a foliar spray to control<br />

leaf miners (Liriomyza spp.) in vegetables (e.g., celery,<br />

melons, tomatoes, lettuce), mushrooms, potatoes, <strong>and</strong><br />

ornamentals, at 75–225 g ha 1 ; also used at<br />

190–450 g ha 1 in drench or drip irrigation<br />

Data compiled from Palli, S.R., Retnakaran, A., 1999. Molecular <strong>and</strong> biochemical aspects <strong>of</strong> chitin synthesis inhibition. In: Jolle` s, P., Muzzarelli, R.A.A. (Eds.), Chitin <strong>and</strong> Chitinases.<br />

Birkha¨user-Verlag, pp. 85–98; Tomlin, C.D.S., Ed., 2000. The Pesticide Manual, 12th edn. British Crop Protection Council Publications; <strong>and</strong> Ishaaya, I., 2001. Biochemical processes related<br />

to insecticide actions: an overview. In: Ishaaya, I. (Ed.), Biochemical Sites <strong>of</strong> <strong>Insect</strong>icide Action <strong>and</strong> Resistance. Springer, pp. 1–16.

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