Silwet L-77, an organosilicone surfactant, was applied to several arthropod pests of California table grapes. Eggs of grape mealybug, Pseudococcus maritimus (Ehrhorn), and omnivorous leafroller, Platynota stultana Walsingham, were tolerant to 0.1, 0.25, and 0.5% treatment solutions; however, eggs of Pacific spider mite, Tetranychus pacificus McGregor, were highly susceptible with mortality >99....

Silicon has generally not been considered essential for plant growth, although it is well recognized that many plants, particularly Poaceae, have substantial plant tissue concentrations of this element. Recently, however, the International Plant Nutrition Institute [IPNI] (2015), Georgia, USA has listed it as a "beneficial substance". This reflects that numerous studies have now established tha...

In Spain, water use in agriculture is expected to become limited by resources the future. It pertinent study effect of decreased irrigation on presence pests, plant damage, and arthropod communities a super-intensive olive orchard examined from 2017 2019. Arthropods were studied with visual vacuum sampling methods two treatments (T1—control T2—Regulated Deficit Irrigation (RDI)). Univariate ana...

Abstract Background The entomopathogenic nematodes (EPNs), especially in the 2 families Steinernematidae and Heterorhabditidae, are important biocontrol agents against insect pests. leaf miners (Fam.: Agromyzidae) cosmopolitan There more than 330 Liriomyza spp. including 20 species that have been reported as economically pests of field crops, ornamentals vegetables. house flies serious for huma...

Agricultural production has intensified over the last century both across increasingly homogenized landscapes and at field level. This study analyzes effects of land-use intensity landscape local scales on main insect pests, predators yield grain sorghum as a summer crop in Uruguay. It represents one very few studies focused reduced system other than organic agriculture adds information from an...

Background Pesticide application is the dominant control method for arthropod pests in broad-acre arable systems. In Australia, organophosphate pesticides are often applied either prophylactically, or reactively, including at higher concentrations, to control crop establishment pests such as false wireworms and earth mite species. Organophosphates are reported to be disruptive to beneficial spe...

Autographa californica Multiple Nucleopolyhedrovirus (AcMNPV) is a baculovirus that causes systemic infections in many arthropod pests. The specific molecular processes underlying the biocidal activity of AcMNPV on its insect hosts are largely unknown. We describe transcriptional responses two major pests, Spodoptera frugiperda (fall armyworm) and Trichoplusia ni (cabbage looper), to determine ...

A 6-yr Þeld study assessed the long-term impact of Bt cotton producing the Cry1Ac -endotoxin on 22 taxa of foliar-dwelling arthropod natural enemies inArizona. No chronic, long-term effects of Bt cotton were observed over multiple generations of nontarget taxa. Zero-2 taxa declined signiÞcantly in unsprayed Bt compared with non-Bt cotton each year. In contrast, positive control studies showed t...

Botanical insecticides have long been touted as attractive alternatives to synthetic chemical insecticides for pest management because botanicals reputedly pose little threat to the environment or to human health. The body of scientific literature documenting bioactivity of plant derivatives to arthropod pests continues to expand, yet only a handful of botanicals are currently used in agricultu...