Goal of the research is to consider main concepts used in probit-analysis method, features its application determine toxicity pesticides, particular insecticides, acaricides and fungicides.
 Methods. To method was used. It consists determining dose a substance necessary achieve certain level mortality test organisms, based on transformation S-shaped «dose-effect» curve into straight line.&...

Reduced sensitivity to quinone outside inhibitor (QoI) fungicides conferred by the presence of the F129L mutation was identified in Alternaria solani isolates collected in Nebraska in 2000 and in isolates collected from the Midwestern states of Minnesota and North Dakota in 2001. Over 4200 isolates of A. solani collected over a 5-year period from 2002 to 2006 from 11 potato-producing states wer...

Abstract Fungicide protection is the current approach for management of boxwood blight caused by Calonectria pseudonaviculata ( Cps ) and C. henricotiae Che ). However, published studies evaluating fungicides under field conditions have been focused on . The objective this study was to evaluate in Northern Germany where both were present. Three trials conducted between 2006 2016. In 2006, plant...

The present study aims at study on combined effect of zinc oxide nanoparticles (ZnO) with common agricultural fungicides. Nanoparticles were synthesized using chemical reduction process and characterized by UV-Visible spectroscopy, X-ray diffraction (XRD), Dynamic Light Scattering (DLS) and Transmission Electron Microscopy (TEM). Synthesized nanoparticles were observed to be in size range of 12...

Chemical fungicides viz. propiconazole, thiram, bayleton, copper-oxy-chloride, benomyl and mancozeb in three different concentrations were screened for their fungicidal efficacy against P. pinnata seed mycoflora viz., Penicillium sp., A. oryzae, A. ustus, A. sydowii, A. fumigatus, A. flavus, A. niger, Rhizopus sp., Fusarium sp., C. gloeosporioides and Absidia sp. in in-vitro conditions by poiso...

The limitations of chemical fungicides for the control of postharvest diseases have recently become more apparent. The utilization of antagonistic microorganisms is a promising alternative to that of fungicides to control postharvest decay. In previous studies, the antagonistic yeast Cryptococcus laurentii has shown excellent effects of biocontrol and great potential for practical application. ...

In a series of screening trials a number of new, non-mercurial fungicides have shown promising results in controlling pineapple disease of sugarcane (Ceratocystis paradoxa). Several of the fungicides tested are as effective as Aretan and Benlate and are now registered for use in sugarcane. Growers now have a choice of effective non-mercurial fungicides for sett dip treatment. Poor germination o...

In the present study, the herbicidal effects of two fungicides with the active ingredients expoxiconazole, fluxapyroxad, pyraclostrobin and fenpropimorph on the two arable weeds Lamium purpureum L. and Chenopodium album L. were investigated. The experiments were conducted in a climate chamber under defined conditions. Sowing pods were prepared and plants at the cotyledon leaf stage were pricked...

While consumers are interested in organic or biorational alternatives to synthetic fungicides for the control of diseases of ornamentals as well as vegetables and tree fruits in residential landscapes, relatively few field trials have been conducted to establish their performance against ornamentals diseases. Weekly applications of Armicarb® 100 (potassium bicarbonate) controlled powdery mildew...

Botrytis gray mold (BGM) caused by Botrytis cinerea Pers. Ex. Fr. is an extremely devastating disease of chickpea (Cicer arietinum L.) and has a regional as well as an international perspective. Unfortunately, nonchemical methods for its control are weak and ineffective. In order to identify an effective control measure, six fungicides with different modes of action were evaluated on a BGM susc...