Comparative residual toxicities of pesticides to the predator Agistemus industani (Acari: Stigmaeidae) on citrus in Florida

Carl C. Childers, Raul Villanueva, Hugo Aguilar, Ryan Chewning, John P. Michaud

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Residual toxicities of registered and selected experimental pesticides used on citrus against Agistemus industani Gonzalez (Acari: Stigmaeidae) were compared. Pesticides considered highly toxic to A. industani were: abamectin 0.15 EC at 731 ml/ha + FC 435-66 petroleum oil at 46.81/ha, pyridaben 75 WP at 469 g/ha, ethion 4 EC at 7.01 l/ha + FC 435-66 petroleum oil at 46.8 1/ha, propargite 6.55 EC at 3.51 l/ha, chlorfenapyr 2 SC at 1.46 l/ha applied alone or in combination with FC 435-66 petroleum oil at 46.8 l/ha, sulphur 80 DF at 16.81 kg/ha, dicofol 4 EC at 7.01 l/ha, fenbutatin oxide 50 WP at 2.24 kg/ha, benomyl 50 WP at 2.24 kg/ha, benomyl 50 WP at 1.68 kg/ha + ferbam 76 GF at 5.60 kg/ha, ferbam 76 GF at 11.21 kg/ha, neem oil 90 EC at 46.8 l/ha, and copper hydroxide DF (40% metallic copper) at 4.48 kg metallic copper/ha +FC 435-66 petroleum oil at 46.8 l/ha. Pesticides that were moderately to slightly toxic included: copper sulphate 98% at 4.48 kg metallic copper/ha + FC 435-66 petroleum oil at 46.8 l/ha, fenbuconazole 2 F at 280 ml/ha + FC 435-66 petroleum oil at 46.8 l/ha, FC 435-66 petroleum oil applied alone at 46.8 l/ha or 23.4 l/ha, and diflubenzuron 25 WP at 1.40 kg/ha. Pesticides that were non-toxic included: fenbuconazole 2 F at 585 ml/ha, malathion 57 EC at 5.85 l/ha, FC 435-66 petroleum oil at 46.8 l/ha, carbaryl 80 S at 3.36 kg/ha, chlorpyrifos 4 EC at 4.68 l/ha, and formetanate 92 SP at 1.12 kg/ha. Understanding the toxic effects of field weathered pesticides against key predacious mite species is important for effective IPM. The results of this study provide a comparison of direct and indirect toxic effects of various pesticides to A. industani under field conditions.

Original languageEnglish
Pages (from-to)461-474
Number of pages14
JournalExperimental and Applied Acarology
Volume25
Issue number6
DOIs
StatePublished - 2001

Bibliographical note

Funding Information:
The authors thank H. N. Nigg for his review comments to improve this manuscript. This research was supported by the Florida Agricultural Experiment Station, and approved for publication as Journal Series No. R–08156.

Keywords

  • Acaricides
  • Fungicides
  • Insecticides
  • Integrated pest and disease management
  • Non-target arthropods
  • Toxicity

ASJC Scopus subject areas

  • Ecology
  • Insect Science

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