Results 151 to 160 of about 166,154 (202)

Fluorescent insect growth regulators (FIGR's): A new tool for insect physiologists

Journal of Insect Physiology, 1976
Abstract A compound was synthesized that fluoresces in the visible spectrum and has the properties of an insect juvenile hormone. When it was assayed against Aedes aegypti larvae, it produced larval-pupal and pupal-adult intermediates; when injected into allatectomized adult females, it restored normal egg development.
R T, Mayer, A C, Bridges, J, Cocke, R, Meola, J K, Olson   +4 more
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Insect hormones and growth regulators

Pesticide Science, 1983
AbstractThe endocrine system that controls development and reproduction in insects has many unique features that could provide targets for insecticides with novel modes of action. Such insecticides, which act by disrupting the growth and development, are often called insect growth regulators.
openaire   +1 more source

Bioavailability of insect growth regulator residues in citrus

Ecotoxicology, 2009
The aim of this study was to increase the knowledge in the field of bioavailability of pollutants in agricultural food samples. Bioavailability of flufenoxuron, lufenuron, pyriproxyfen and fenoxycarb was studied in a common commodity as mandarin in vitro.
P, Payá, J, Oliva, P, Zafrilla, M A, Cámara, A, Barba   +4 more
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Alfalfa Weevil, Insect Growth Regulators, 1976

Insecticide and Acaricide Tests, 1981
Abstract Sprays were applied May 12 to two-year-old ‘Narragansett’ alfalfa at the West Virginia University Reedsville Experiment Farm. Treatments were replicated four times in a completely randomized design, using 12 x 18 m plots with 6 m alleys between rows for tractor access. Sprays were applied by a John Bean tractor-mounted hydraulic
L. Claire Stuart, Linda Butler
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Garden Fleahopper, Insect Growth Regulators, 1975*

Insecticide and Acaricide Tests, 1981
Abstract Sprays were applied to three-year-old ‘Narragansett’ alfalfa at the West Virginia University Reedsville Experiment Farm on July 10 with a John Bean tractor-mounted hydraulic sprayer with a 6 m boom, tank capacity 189 liters, pressure 2.1 kg/cm2 and calibrated to deliver 243 liters/lia at a tractor speed of 5.6 to 6.4 km/h ...
L. Claire Stuart, Linda Butler
openaire   +1 more source

Insect Growth Regulators with Juvenile Hormone Activity

Annual Review of Entomology, 1975
The term insect growth regulator (IGR) was designed to describe a new class of bio-rational compounds. Through greater selectivity of action these compounds appear to fit the requirements for third generation pesticides, such as the absence of undesirable effects on man, wildlife, and the environment and compatibility with modern insect pest management
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Modeling insect growth regulators for pest management

Journal of Mathematical Biology
Insect growth regulators (IGRs) have been developed as effective control measures against harmful insect pests to disrupt their normal development. This study is to propose a mathematical model to evaluate the cost-effectiveness of IGRs for pest management.
Lou, Y, Wu, R
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Pear, Insect Growth Regulator Psylla Test, 1985

Insecticide and Acaricide Tests, 1986
Abstract Treatments consisted of 0.14 acre blocks replicated 4 times. On 26 Jul 3785 ml/acre of MIT AC 1.5 EC was applied to a psylla population which had developed pyrethroid tolerance to reduce the population prior to randomization of this experiment. Materials were applied by airblast sprayer on 2 Aug, 16 Aug and 29 Aug in 78 gal/acre.
Angus J. Howitt, Alan R. Hays
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Residual Activity of Insect Growth Regulators, 1989

Insecticide and Acaricide Tests, 1990
Abstract On 19 Jun, treatments were applied to four small (5 ft) ‘Red Yorking’ apple trees maintained outside via a handgun to drip. Beginning on the day of application, and once a week for 4 wk afterward, 4 leaves from each of the treatment’s 2 trees were randomly sampled with 2 leaf disks (17.9 mm diam) cut from each leaf. Each pair of
Bruce A. Barrett, Larry A. Hull
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Pear, Insect Growth Regulator Tests, 1987

Insecticide and Acaricide Tests, 1988
Abstract Mature pear trees were sprayed with handguns operating at 600 psi to evaluate pesticides for control of pear pests. Plots consisted of 5 single-tree replicates in randomized block design. Treatments were applied 3 times, 29 Apr (petal fall), 29 May, and 20 Jul.
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