Evaluation of prophylactic sprays on pest abundance, foliar damage and yield in winter wheat

Chen, Guihua; Hinds, Jermaine; Zobel, Emily; Rosario-Lebron, Armando; Hooks, Cerruti R. R.

doi:10.1080/09670874.2015.1028510

Cited by 7 publications

(5 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In small cereals, aphids are important insect-pests often correlated with FHB severity, but the efficacy of insecticide application seems strongly related to pest pressure. While, prophylactic sprays with insecticides will not enhanced wheat yields in absence of high pest pressure [291], in Indian trials the application at heading significantly improved FHB control, but no data were collected on mycotoxin [292]. Further, in Northern Europe the use of insecticides in cereals showed a low effect, although significant, with the infestation by F. graminearum and the consequent mycotoxins [286].…”

Section: Fusarium Disease and Toxins Managementmentioning

confidence: 99%

Fusarium Toxins in Cereals: Occurrence, Legislation, Factors Promoting the Appearance and Their Management

2016

View full text Add to dashboard Cite

Fusarium diseases of small grain cereals and maize cause significant yield losses worldwide. Fusarium infections result in reduced grain yield and contamination with mycotoxins, some of which have a notable impact on human and animal health. Regulations on maximum limits have been established in various countries to protect consumers from the harmful effects of these mycotoxins. Several factors are involved in Fusarium disease and mycotoxin occurrence and among them environmental factors and the agronomic practices have been shown to deeply affect mycotoxin contamination in the field. In the present review particular emphasis will be placed on how environmental conditions and stress factors for the crops can affect Fusarium infection and mycotoxin production, with the aim to provide useful knowledge to develop strategies to prevent mycotoxin accumulation in cereals.Keywords: Fusarium toxins; Fusarium disease; mycotoxin regulation; mycotoxin management Mycotoxigenic Fusarium and Fusarium-Related DiseasesFusarium is one of the most economically important genera of phytopathogenic fungi. Several Fusarium species can infect small grain cereals (wheat, barley and oat) and maize; the predominant species can vary according to crop species involved, geographic region and environmental conditions [1,2]. Fusarium toxins are secondary metabolites produced by toxigenic fungi that naturally contaminate cereals, they represent a source of grave concern in cereals and cereal-based products, resulting in harmful contamination of foods and feedstuffs [3].Fusarium diseases that affect cereal crops are caused by several individual Fusarium or more commonly, co-occurring species. Fusarium spp. can cause indirect losses resulting from seedling blight or reduced seed germination, or direct losses such as seedling foot and stalk rots; however, the most important diseases in cereals due to a severe reduction in yield and quality are head blight of small cereals as wheat, barley and oat, and ear rot of maize [4,5]. The coexistence of different Fusarium spp. in the field is a normal situation and although the number of detectable species can be high [6], only some of them are pathogenic, especially under suitable climatic conditions. The composition of species involved in the Fusarium disease complex is dynamic [7]. The species comprising a Fusarium community associate with each other and this cohabitation is particularly affected by climatic factors such as temperature and moisture. Moreover, evidences indicates that the environmental conditions that favour the infection process can differ from those that affect colonization [8]; therefore, the relationship among Fusarium species may change over time during the infection process.

show abstract

Section: Fusarium Disease and Toxins Managementmentioning

confidence: 99%

Fusarium Toxins in Cereals: Occurrence, Legislation, Factors Promoting the Appearance and Their Management

2016

View full text Add to dashboard Cite

show abstract

“…For instance, an experiment that took place during 2008-2009 revealed that cereal aphid densities were not reduced by treatment with the pyrethroid insecticide lambda-cyhalothrin. However, when the same experiment was repeated during 2010-2011, the same insecticide killed the exposed aphids [253]. This fact could be attributed to the high precipitation levels occurring in 2008-2009 vs. 2010-2011 [253].…”

Section: Effect Of Agricultural Practices and Environmentmentioning

confidence: 97%

“…However, when the same experiment was repeated during 2010-2011, the same insecticide killed the exposed aphids [253]. This fact could be attributed to the high precipitation levels occurring in 2008-2009 vs. 2010-2011 [253]. The efficacy of insecticides may differ among strains of the same aphid species.…”

Section: Effect Of Agricultural Practices and Environmentmentioning

confidence: 99%

Cereal Aphid Parasitoids in Europe (Hymenoptera: Braconidae: Aphidiinae): Taxonomy, Biodiversity, and Ecology

Tomanović

Kavallieratos

et al. 2022

Insects

View full text Add to dashboard Cite

Cereals are very common and widespread crops in Europe. Aphids are a diverse group of herbivorous pests on cereals and one of the most important limiting factors of cereal production. Here, we present an overview of knowledge about the taxonomy, biodiversity, and ecology of cereal aphid parasitoids in Europe, an important group of natural enemies contributing to cereal aphid control. We review the knowledge obtained from the integrative taxonomy of 26 cereal aphid primary parasitoid species, including two allochthonous species (Lysiphlebus testaceipes and Trioxys sunnysidensis) and two recently described species (Lipolexis labialis and Paralipsis brachycaudi). We further review 28 hyperparasitoid species belonging to three hymenopteran superfamilies and four families (Ceraphronoidea: Megaspillidae; Chalcidoidea: Pteromalidae, Encyrtidae; Cynipoidea: Figitidae). We also compile knowledge on the presence of secondary endosymbionts in cereal aphids, as these are expected to influence the community composition and biocontrol efficiency of cereal aphid parasitoids. To study aphid–parasitoid–hyperparasitoid food webs more effectively, we present two kinds of DNA-based approach: (i) diagnostic PCR (mainly multiplex PCR), and (ii) DNA sequence-based methods. Finally, we also review the effects of landscape complexity on the different trophic levels in the food webs of cereal aphids and their associated parasitoids, as well as the impacts of agricultural practices and environmental variation.

show abstract

“…There has been much progress in identifying the impact of pesticides on non-target beneficial organisms, such as through the International Organization for Biological Control (IOBC), who develop standard methods (ranging from laboratory through to field experiments) for testing the side effects of pesticides on natural enemies [ 6 ]. Despite this knowledge, there is still reluctance by the majority of farmers to use alternatives to broad-spectrum pesticides [ 7 , 8 ]. This situation is certainly true in Australia, particularly in the grains industry, which is one of the largest primary industries, with exports worth almost AU$6 billion annually and over 35 million ha planted each year [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

A Framework for Identifying Selective Chemical Applications for IPM in Dryland Agriculture

Umina

Jenkins

McColl³

et al. 2015

Insects

View full text Add to dashboard Cite

Shifts to Integrated Pest Management (IPM) in agriculture are assisted by the identification of chemical applications that provide effective control of pests relative to broad-spectrum pesticides but have fewer negative effects on natural enemy (beneficial) groups that assist in pest control. Here, we outline a framework for identifying such applications and apply this framework to field trials involving the crop establishment phase of Australian dryland cropping systems. Several chemicals, which are not presently available to farmers in Australia, were identified as providing moderate levels of pest control and seedling protection, with the potential to be less harmful to beneficial groups including predatory mites, predatory beetles and ants. This framework highlights the challenges involved in chemically controlling pests while maintaining non-target populations when pest species are present at damaging levels.

show abstract

Evaluation of prophylactic sprays on pest abundance, foliar damage and yield in winter wheat

Cited by 7 publications

References 41 publications

Fusarium Toxins in Cereals: Occurrence, Legislation, Factors Promoting the Appearance and Their Management

Fusarium Toxins in Cereals: Occurrence, Legislation, Factors Promoting the Appearance and Their Management

Cereal Aphid Parasitoids in Europe (Hymenoptera: Braconidae: Aphidiinae): Taxonomy, Biodiversity, and Ecology

A Framework for Identifying Selective Chemical Applications for IPM in Dryland Agriculture

Contact Info

Product

Resources

About