Results 101 to 110 of about 8,813 (234)
ABSTRACT Biological control in high tunnel systems can be optimised by matching predator species to seasonal environmental conditions. We evaluated the predatory efficacy of syrphid flies (Toxomerus marginatus (Say), Eupeodes americanus (Fabricius)) and lacewings (Chrysoperla carnea (Stephens), Chrysoperla rufilabris (Burmeister)) across laboratory ...
Allison Zablah +3 more
wiley +1 more source
Studies on the feeding of Myzus persicae (Sulz.) on radioactive plants
Adult apterae of Myzus persicae (Sulz.), were fed, after a period of fasting, on leaves containing radioactive phosphorus. The weight of sap imbibed by the aphids after varying feeding times was estimated by relating their radioactivity, at the end of ...
Watson, M. A., Nixon, H. L.
core +1 more source
Ovicidal and Insecticidal Activities of Pyriproxyfen Derivatives with an Oxime Ester Group
Based on the structural framework of a pyriproxyfen metabolite, nineteen oxime ester derivatives were synthesized via reaction of the carboxylic acids with 4-(2-(2-pyridinyloxy)ethoxy)benzaldehyde oxime.
Guo-Shao Sun +4 more
doaj +1 more source
Twenty-one clones of the peach-potato aphid, Myzus persicae (Sulzer), carrying various combinations of known mechanisms of insecticide resistance were assessed for their response to the new pyridine azomethine compound, pymetrozine, in leaf-dip bioassays.
Foster, S. P., Denholm, I., Thompson, R.
core +1 more source
Antimetabolic effects of plant proteins on homopteran insect pests [PDF]
Homopteran insect pests can cause severe economical damage to crop plants by both direct physical means and as vectors of plant viral diseases. They are notoriously difficult insects to control by conventional methods, primarily due to their ability to ...
Powell, K.S, Powell, Kevin Steven
core
Spontaneous loss and reselection of resistance in extremely resistant Myzus persicae (Sulzer)
Modification of an immunoassay for detection of esterase-4 (E4), the enzyme conferring insecticide resistance in Myzus persicae, enabled further discrimination of extremely high levels of insecticide resistance (R3) from the very high levels (R2 ...
Ffrench-Constant, R. H. +2 more
core +1 more source
Studies on the transmission of sugar-beet yellows virus by the aphis, Myzus persicae (Sulz.) [PDF]
Previous studies on the relationship between plant viruses and their insect vectors have been carried out which viruses which are easily mechanically transmissible and whose vectors lose their infectivity within a few hours of removal from the source of ...
Watson, M. A.
core +1 more source
The thrips, Frankliniella schultzei, and green peach aphid, Myzus persicae, cause direct damage to plants of economic importance and transmit phytoviruses, causing large economic losses.
Patrícia Fontes Pinheiro +5 more
doaj
One of the factors affecting the effectiveness of predatory coccinellids in an aphid infested crop is the food specificity of the predator. The response towards six species of aphids (Sternorrhyncha: Aphididae) was therefore tested in one of the most ...
Plamen KALUSHKOV, Ivo HODEK
doaj +1 more source
Insecticide sprays were applied to Myzus persicae (Sulzer) populations carrying various combinations of three insecticide resistance mechanisms (esterase-based metabolic resistance and two target site mechanisms, known as MACE and kdr), supported on host
Foster, S. P., Devonshire, A. L.
core +1 more source

