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Effect of defoliants on numbers of sucking pests and predators in cotton fields

Zashchita Rastenii Moskva ( 11): 32-33

Effect of defoliants on numbers of sucking pests and predators in cotton fields

Investigations in the Samarkand region of Uzbekistan showed that Gemetrel or Khaet (both of unstated composition) applied when 2-3 bolls on average had opened per cotton plant (optimum dose 8-10 litre and kg/ha, resp.), was less toxic both to pests (aphids and cicadellids) and to predators (e.g. chrysopids and coleopterans) than was magnesium chlorate used as a standard.

Accession: 002811599

Related references

E.N.wawy, A.S.; Abd el Rahman, I.; Ashry, M.A.; Hosny, A.; Belal, A., 1983: Effect of mixtures of a foliar fertilizer and each of several insecticides on sucking pests and their predators in cotton fields. The foliar fertilizer Complesal applied on cotton in Egypt reduced the numbers of both pests and predators. Combined with chlorpyrifos at 480 g/litre and applied at 1 litre/feddan it increased its effectiveness against Bemisia tabaci (Gennadius) a...

Iuzbash'-Ian, O.B.baev, T., 1980: Defoliants, sucking pests and predators. Khlopkovodstvo (7) 26-27

Ebaid, G.H.; Mansour, E.S., 2006: Relative population abundances of sap-sucking pests and associated predators in relation to non-chemical treatments in cotton fields in Egypt. Mixture of some chelated microelements (powder of; Zinc 12%, Mn 12%, Fe 12%, Cu 12% and 6% liquid Boron), Plant Growth Regulator (GGR<sub>6</sub>) and detergent (liquid soap) were used in field trials to study their effect on occurrenc...

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Sechser, B.; Ayoub, S.; Monuir, N., 2003: Selectivity of emamectin benzoate to predators of sucking pests on cotton. The predator fauna was monitored following the application of emamectin benzoate in a test on Egyptian cotton over a period of 23 days by a combined drop cloth/DVac method in 2000. The carbamates thiodicarb and methomyl were included in the study...

E.N.wawy, A.S.; Ashri, M.A.; Salama, A., 1980: The effect of different pyrethroids, several O. P. compounds and certain mixtures on the sucking pests in cotton fields in Kafr El-Sheikh Governorate (A. R. Egypt). In these further tests in 1978-79 of new insecticides, especially the synthetic pyrethroids, against cotton pests of Kafr-El-sheikh in Egypt [see RAE/A 68, 3816], particular attention was paid to the effects of Dowco 417 [cyano(6-phenoxy-2-pyridin...

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