Reference

Effects of some insecticide and insect growth regulator treatments on the immature stages of the cabbage whitefly (Aleyrodes proletella L

Effects of some insecticide and insect growth regulator treatments on the immature stages of the cabbage whitefly (Aleyrodes proletella L.). Thompson, A. R.; Goodwin, M. C. (Natl. Veg. Res. Stn., Wellesbourne/Warwick, UK). 42588-37-4 and 919-86-8 are cas registry numbers. These chemicals are also mentioned in this article. Meded. Fac. Landbouwwet., Rijksuniv. Gent, 48(2), 309-15 (English) 1983. CODEN: MFLRA3. ISSN: 0368-9697. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Brussels sprout plants infested with eggs, 3rd- and 4th-instar larvae, or pupae of the cabbage whitefly (A. proletella) from a lab. culture were dipped in aq. prepns. contg. 0.1-100 mg deltamethrin [52918-63-5]/L or 100-2000 mg/L of demeton-S-methyl [919-86-8], pirimiphos-methyl [29232-93-7], kinoprene [42588-37-4], methoprene [40596-69-8], or Ro 13-5223 [72490-01-8]. A wetting agent (Cittowet) was added to all test treatments. Deltamethrin was the most toxic chem. tested, no adult cabbage whitefly being produced on plants treated with 10 mg/L. Treatment of plants with 2000 mg pirimiphos-methyl reduced egg-hatch by 92%; no adults were produced on plants infested with larvae or pupae and treated with this insecticide at 500 mg/L. Although 2000 mg demeton-S-methyl/L reduced egg-hatch by only 44%, the pupation of 3rd- and 4th-instar larvae was reduced by 50% with 500 mg/L; the eclosion of adults was reduced by 90% with 2000 mg demeton-S-methyl/L. Methoprene was the most active insect growth regulator against cabbage whitefly eggs, a concn. of 1000 mg/L completely preventing egg-hatch. However, a similar treatment reduced pupation by only 30% and 2000 mg methoprene/L reduced the eclosion of adults from treated pupae by only 37%. Whereas 2000 mg kinoprene/L was needed to completely prevent adults from emerging on egg-infested plants, a concn. of 1000 mg/L reduced the pupation of treated larvae by 82%; adult eclosion was reduced by 89% by 2000 mg kinoprene/L. Ro 13-5223 reduced egg-hatch by 70% with 2000 mg/L but a similar concn. reduced the pupation of larvae by only 22% and the eclosion of adults by only 2%. .

Chemical control of the attine ant Acromyrmex octospinosus (Reich): effectiveness of new control agents under natural conditions

Chemical control of the attine ant Acromyrmex octospinosus (Reich): effectiveness of new control agents under natural conditions. Febvay, G.; Rahbe, Y.; Kermarrec, A. (Stn. Zool. Lutte Biol., INRA, Pointe a Pitre F-97184, Fr.). Meded. Fac. Landbouwwet., Rijksuniv. Gent, 51(3B), 1187-96 (French) 1986. CODEN: MFLRA3. ISSN: 0368-9697. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Control agents were assessed against A. octospinosus, a leaf-cutting ant damaging vegetable crops in Guadeloupe (West Indies). In lab. tests, avermectin B1a [65195-55-3], AC 217300 [67485-29-4], and Ro 13-5223 [72490-01-8] showed no repellency effects; at some concns. they acted as attractants for the ants. In field investigations, baits contg. avermectin B1a (0.075%) caused 46% nest mortality, compared to 23 and 12% for Ro 13-5223 (0.8%) and AC 217300 (0.8%), resp., and 100% mortality for the Mirex std.