The Strategy of Integrated Mite Management

2011 ◽  
pp. 47-82 ◽  
Keyword(s):  
Integrated Mite Management

COMPETITIVE DISPLACEMENT OF PANONYCHUS ULMI (ACARINA: TETRANYCHIDAE) BY ACULUS SCHLECHTENDALI (ACARINA: ERIOPHYIDAE) IN APPLE ORCHARDS

1977 ◽  
Vol 109 (8) ◽  
pp. 1025-1034 ◽  
Author(s):  
B. A. Croft ◽  
S. A. Hoying
Keyword(s):  
Field Experiments ◽  
Management Program ◽  
Panonychus Ulmi ◽  
Competitive Displacement ◽  
Economic Threshold ◽  
Apple Leaves ◽  
Mite Feeding ◽  
Integrated Mite Management ◽  
Low Levels ◽  
Aculus Schlechtendali

AbstractEvidence for competitive deplacement of Panonychus ulmi (ERM) from apple trees via Aculus schlechtendali (ARM) by what is thought to be a foliage conditioning mechanism is presented. Previous feeding of ARMs at high and moderate density levels near or below the economic threshold for this phytophagous mite on apple reduced the build-up of the ERM in 3 years of field experiments on Red Delicious trees and during a single season on McIntosh apple foliage. Comparative tests measuring oviposition rates of the ERM on excised apple leaves which had sustained high and low levels of previous rust mite feeding gave results similar to field experiments. The applied aspect of how this interspecific relationship can be managed in the context of an integrated mite management program for apples is discussed.

Lethal time of insecticides on the predator mite Neoseiulus fallacis (Acari: Phytoseiidae) following topical exposure

2016 ◽  
Vol 148 (3) ◽  
pp. 353-360 ◽  
Author(s):  
Raja Z. Raja Jamil ◽  
Christine Vandervoort ◽  
Larry J. Gut ◽  
Mark E. Whalon ◽  
John C. Wise
Keyword(s):  
United States Of America ◽  
Lethal Effect ◽  
Panonychus Ulmi ◽  
Neoseiulus Fallacis ◽  
Spray Tower ◽  
Lethal Time ◽  
Integrated Mite Management ◽  
Predator Mite ◽  
Reduced Risk ◽  
Toxicity Effects

AbstractNeoseiulus fallacis (Garman) (Acari: Phytoseiidae) is an efficient predator of the European red mite (ERM) (Panonychus ulmi (Koch); Acari: Tetranychidae) in Michigan, United States of America apple orchards and an important part of integrated pest management. Four reduced-risk insecticides (acetamiprid, spinetoram, chlorantraniliprole, and novaluron) and two conventional insecticides (esfenvalerate and carbaryl) were tested against N. fallacis for topical toxicity effects. Bioassays using a Potter spray tower were conducted to measure the topical toxicity of compounds when applied at field rate concentrations to N. fallacis. Lethal time was measured for adult N. fallacis at 4, 24, 48, 72, and 96 hours after treatment. Carbaryl and esfenvalerate showed the highest levels of toxicity to adult N. fallacis with shortest lethal time values (LT50) whereas the reduced risk insecticides novaluron, acetamiprid, spinetoram, and chlorantraniliprole were nontoxic. This study provides important information to apple growers regarding direct lethal effect of insecticides on predator mites and its implications to integrated mite management.

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