scholarly journals Influence of Buffalograss Management Practices on Western Chinch Bug and Its Beneficial Arthropods

2007 ◽  
Vol 100 (1) ◽  
pp. 136-147 ◽  
Author(s):  
Jeffrey Carstens ◽  
Tiffany Heng-Moss ◽  
Frederick Baxendale ◽  
Roch Gaussoin ◽  
Kevin Frank ◽  
...  
2021 ◽  
Vol 5 ◽  
Author(s):  
Zhaoke Dong ◽  
Mengjing Xia ◽  
Cheng Li ◽  
Baofeng Mu ◽  
Zhiyong Zhang

Sowing plants that provide food resources in orchards is a potential habitat management practice for enhancing biological control. Flowering plants (providing pollen and nectar) and grasses (providing alternative prey) can benefit natural enemies in orchards; however, little is known about their relative importance. We studied the effect of management practices (flower strips, grass strips, and spontaneous grass) on arthropod predators under organic apple management regimes in apple orchards in Beijing, China. Orchards located at two different sites were assessed for 3 years (2017–2019). The cover crops had a significant impact on the abundance and diversity of arthropod predators. The grass treatment consistently supported significantly greater densities of alternative prey resources for predators, and predators were more abundant in the grass than in the other treatments. The Shannon–Wiener diversity was significantly higher for the cover crop treatment than for the control. Community structure was somewhat similar between the grass and control, but it differed between the flower treatment and grass/control. Weak evidence for an increase in mobile predators (ladybirds and lacewings) in the orchard canopy was found. Ladybirds and lacewings were more abundant in the grass treatment than in the other treatments in 2019 only, while the aphid abundance in the grass treatment was lowest. The fact that grass strips promoted higher predator abundance and stronger aphid suppression in comparison to the flower strips suggests that providing alternative prey for predators has great biocontrol service potential. The selection of cover crops and necessary management for conserving natural enemies in orchards are discussed in this paper.


Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 349
Author(s):  
Giulia Zanettin ◽  
Angela Bullo ◽  
Alberto Pozzebon ◽  
Giovanni Burgio ◽  
Carlo Duso

In this study, the effects of habitat management practices on both pests and beneficial arthropods were evaluated in vineyards of North-eastern Italy through different field experiments: (1) mowing of inter-row spontaneous grasses in conventional and organic vineyards, (2) different timing of mowing of a green manure mixture, and (3) comparing different green manure mixtures. The first experiment followed a split-plot design, while randomized block design was used in the second and third experiment. In each experiment arthropods were sampled using different methods: leaf sampling, beating and sweep net sampling. Non-mowed spontaneous grasses in inter-rows of vineyards favored the abundance of natural enemies (e.g., predatory mites, parasitic wasps and spiders), and sometimes grapevine leafhoppers. Many arthropod species were recorded in higher numbers in organic vineyards. Late mowing of green manure favored beneficial arthropods (e.g., spiders and parasitic wasps), while it did not influence herbivore density. Groundcover management practices, aimed at increasing plant biodiversity in vineyards, could be a useful tool to enhance beneficial arthropod abundance, although the adoption of this practice should be carefully evaluated when pests occur. Semi-natural areas can contribute to create a more pest-stable agro-ecosystem and should be integrated with appropriate ecological infrastructures surrounding vineyards.


1997 ◽  
Vol 32 (4) ◽  
pp. 403-411 ◽  
Author(s):  
S. Kristine Braman ◽  
Ronald D. Oetting ◽  
Wojciech Florkowski

Questionnaires on pesticide use and pest management practices were mailed to landscape maintenance/lawn care firms in the metro-Atlanta area; 25.4% or 350 firms responded. Of these firms, 159 provide pest management services for turfgrass or ornamentals or both. Responding professionals purchased 13,210 kg AI of insecticides, 93,447 kg AI herbicide, and 3,867 kg AI of fungicides during 1993. Total area serviced by these firms was 14,770 ha. The most commonly-purchased insecticides included products containing hydramethylnon, acephate, chlorpyrifos, carbaryl, and horticultural oil. Frequently-purchased herbicides included products that contain pendimethalin, 2,4-D, glyphosate, MCPP, dicamba, oryzalin, benefin, and oxadiazon. Fungicidal products purchased by the most respondents were chlorothalonil, thiophanate-methyl, oxazoladinadione, matalayl, and triadimefon. Insecticides were most frequently applied to ornamentals (65%), while herbicides were the primary pesticide used on turf (93% preemergence, 79% postemergence). Fungicides were more evenly distributed. Prescheduled applications determined timing of application for 32% of respondents, while 46% report that monitoring of pest populations influences treatment decisions. Only 8% of respondents incorporate monitoring of beneficial arthropods into this decision-making process.


HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 692b-692
Author(s):  
Michael W. Smith

Several new management tools and management practices are being developed for pecan. Major insect pests of pecan are pecan nut casebearer, hickory shuckworm, and pecan weevil. Sex pheromone attractants are being developed for each of these pests that improve monitoring. Also, a pecan weevil trap (Tedder's trap) was introduced recently that is more sensitive to weevil emergence than the previous trap. New models that predict critical periods for pecan scab infection are being tested. Certain legume ground covers are being tested to increase beneficial arthropods in the orchard for aphid control, and to supply N. Mulches are being investigated as an alternative to herbicide management for young trees. A mechanical fruit thinning method has been developed that increases fruit quality and reduces alternate bearing as well as stress-related disorders.


Insects ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 215 ◽  
Author(s):  
Joshua E. Arnold ◽  
Monika Egerer ◽  
Kent M. Daane

Urban agriculture is widely practiced throughout the world. Urban agriculture practitioners have diverse motivations and circumstances, but one problem is ubiquitous across all regions: insect pests. Many urban farmers and gardeners either choose to, or are required to forego, the use of chemical controls for pest outbreaks because of costs, overspray in populated areas, public health, and environmental concerns. An alternative form of pest control is conservation biological control (CBC)—a form of ecological pest management—that can reduce the severity of pest outbreaks and crop damage. Urban farmers relying on CBC often assume that diversification practices similar to those used in rural farms may reduce insect pest populations and increase populations of beneficial insects, yet these management practices may be inappropriate for applications in fragmented urban environments. In this review, we assess urban CBC research and provide a synthesis for urban agriculture practitioners. Our findings indicate that local and landscape factors differentially affect insect pests and beneficial arthropods across the reviewed studies, and we identify several on-farm practices that can be implemented to increase biological control in urban agriculture.


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