Possible crosstalk between the carotenoid and porphyrin biosynthetic pathways under photooxidative conditions was investigated by using their biosynthetic inhibitors, norflurazon (NF) and oxyfluorfen (OF). High levels of protoporphyrin IX (Proto IX) accumulated in rice plants treated with OF, whereas Proto IX decreased in plants treated with NF. Both NF and OF treatments resulted in greater dec...

Two multiresidue methods were developed to determine pesticides in air collected in California. Pesticides were trapped using XAD-4 resin and extracted with ethyl acetate. Based on an analytical method from the University of California Davis Trace Analytical Laboratory, pesticides were detected by analyzing the extract by gas chromatography-mass spectrometry (GC-MS) to determine chlorothalonil,...

Soil treatments with Metarhizium brunneum EAMa 01/58-Su strain conducted in both Northern and Southern Spain reduced the olive fly (Bactrocera oleae) population density emerging from the soil during spring up to 70% in treated plots compared with controls. A model to determine the influence of rainfall on the conidial wash into different soil types was developed, with most of the conidia retain...

Conservation tillage systems provide optimum conditions to reduce soil erosion and increase surface soil organic matter. This experiment was established with the longterm goal of developing conservation tillage systems that use either chemical inputs to produce vegetables and control pests, or legume cover crops, biological pesticides, and tillage to provide plant nutrition and control pests. T...

Common purslane (Portulaca oleracea L.) can be problematic in thin turf, along sidewalks and drives, and especially during turfgrass establishment. Little published research exists evaluating herbicides that will control purslane and are also labeled for turfgrass. Thus, our objective was to evaluate the efficacy of preemergence (PRE) or postemergence (POST) herbicides labeled for use in turf f...

Several effects on pea (Pisum sativun L. var Onwards) choroplasts of a new diphenylether herbicide, fomesafen (5-12-chloro4-trifluoromethylphenoxyl-N-methanesulfonyl-2-nitrobenzamide) have been compared with those of a herbicide of related structure, nitrofluorfen (2-chloro-1-14-nitrophenoxyj4jtrlfluoromethyllbenzene). Although both compounds produce the same liht-dependent symptoms of desiccat...

Several effects on pea (Pisum sativun L. var Onwards) choroplasts of a new diphenylether herbicide, fomesafen (5-12-chloro4-trifluoromethylphenoxyl-N-methanesulfonyl-2-nitrobenzamide) have been compared with those of a herbicide of related structure, nitrofluorfen (2-chloro-1-14-nitrophenoxyj4jtrlfluoromethyllbenzene). Although both compounds produce the same liht-dependent symptoms of desiccat...