VIABILITY OF A BIOLOGICAL PEST CONTROL AGENT THROUGH HYDRAULIC NOZZLES

2005 ◽  
Vol 48 (1) ◽  
pp. 45-54 ◽  
Author(s):  
J. P. Fife ◽  
H. E. Ozkan ◽  
R. C. Derksen ◽  
P. S. Grewal ◽  
C. R. Krause
Keyword(s):  
Pest Control ◽  
Control Agent ◽  
Biological Pest Control

Evaluation of a contraction flow field on hydrodynamic damage to entomopathogenic nematodes?A biological pest control agent

2004 ◽  
Vol 86 (1) ◽  
pp. 96-107 ◽  
Author(s):  
Jane P. Fife ◽  
Richard C. Derksen ◽  
H. Erdal Ozkan ◽  
Parwinder S. Grewal ◽  
Jeffrey J. Chalmers ◽  
...  
Keyword(s):  
Flow Field ◽  
Pest Control ◽  
Entomopathogenic Nematodes ◽  
Control Agent ◽  
Contraction Flow ◽  
Biological Pest Control

Using CFD Methods to Predict Damage of a Biological Pest Control Agent during Passage through a Hydraulic Nozzle

2003 ◽  
Author(s):  
Jane Patterson Fife ◽  
Richard C. Derksen ◽  
H. Erdal Ozkan ◽  
Parwinder S. Grewal
Keyword(s):  
Pest Control ◽  
Control Agent ◽  
Biological Pest Control

scholarly journals A new threat to bees? Entomopathogenic nematodes used in biological pest control cause rapid mortality inBombus terrestris

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1413 ◽  
Author(s):  
Alexandrea Dutka ◽  
Alison McNulty ◽  
Sally M. Williamson
Keyword(s):  
Pest Control ◽  
Broad Spectrum ◽  
Entomopathogenic Nematodes ◽  
Pesticide Exposure ◽  
Bombus Terrestris ◽  
Control Agent ◽  
Population Declines ◽  
Biological Pest Control ◽  
Bee Colony ◽  
Pollinating Insects

There is currently a great deal of concern about population declines in pollinating insects. Many potential threats have been identified which may adversely affect the behaviour and health of both honey bees and bumble bees: these include pesticide exposure, and parasites and pathogens. Whether biological pest control agents adversely affect bees has been much less well studied: it is generally assumed that biological agents are safer for wildlife than chemical pesticides. The aim of this study was to test whether entomopathogenic nematodes sold as biological pest control products could potentially have adverse effects on the bumble beeBombus terrestris. One product was a broad spectrum pest control agent containing bothHeterorhabditis sp. andSteinernema sp., the other product was specifically for weevil control and contained onlySteinernema kraussei. Both nematode products caused ≥80% mortality within the 96 h test period when bees were exposed to soil containing entomopathogenic nematodes at the recommended field concentration of 50 nematodes per cm2soil. Of particular concern is the fact that nematodes from the broad spectrum product could proliferate in the carcasses of dead bees, and therefore potentially infect a whole bee colony or spread to the wider environment.

scholarly journals Cuticle degrading enzyme production by some isolates of the entomopathogenic fungus, Metarhizium anisopliae (Metsch.)

2014 ◽  
Vol 20 ◽  
pp. 25-32
Author(s):  
N Sapna Bai ◽  
OK Remadevi ◽  
TO Sasidharan ◽  
M Balachander ◽  
Priyadarsanan Dharmarajan
Keyword(s):  
Pest Control ◽  
Entomopathogenic Fungi ◽  
Enzyme Production ◽  
Insect Pest ◽  
Strong Relationship ◽  
Control Agent ◽  
Mechanical Pressure ◽  
Degrading Enzyme ◽  
Insect Pest Control ◽  
Degrading Enzymes

Context: Entomopathogenic fungi have been recognized as viable alternate options to chemicals in insect pest control. Unlike other potential biocontrol agents, fungi do not have to be ingested to infect their hosts but invade directly through the cuticle. Entry into the host involves both enzymic degradation of the cuticle barrier and mechanical pressure. Production of a range of cuticle degrading enzymes is an important event in the interaction of entomopathogenic fungi and host. Enzyme secretion is believed to be a key contributor for the virulence of a fungal isolate. Objectives: The potentiality of nine isolates of M. anisopliae were tested to produce to produce three important cuticle degrading enzymes, viz., chitinase, protease and lipase. Materials and Methods: Nine isolates of M. anisopliae were evaluated for chitinase, protease and lipase enzyme production by determining the enzyme index and activities. Results: Chitinase index of these isolates were ranged from 1.5 to 2.2 and chitinolytic activity from 0.525 to 1.560 U/ml. The isolates showed protease index in the range of 1.2 to 3.3 and the activity ranged from 0.020 to 0.114 U/ml. Lipase index ranged from 1.15 to 7.0 and the enzyme activity ranged from 0.153 to 0.500 U/ml. A strong relationship was observed between virulence of the isolates and cuticle degrading enzyme production as increased enzyme production was observed for virulent isolates. Conclusion: In the present study three isolates as (MIS2, MIS7 and MIS13) demonstrated cuticle degrading enzyme (CDE) that indicate higher virulence based on the bioassay conducted earlier by the authors as strongly substantiating the role of CDEs is considered the virulence of Metarhizium isolates. So, these isolates may be as ecofriendly insect-pest control agent in future. DOI: http://dx.doi.org/10.3329/jbs.v20i0.17648 J. bio-sci. 20: 25-32, 2012

scholarly journals Food web engineering: ecology and evolution to improve biological pest control

2021 ◽  
Author(s):  
Marta Montserrat ◽  
Diego Serrano-Carnero ◽  
Inmaculada Torres-Campos ◽  
Mehdi Bohloolzadeh ◽  
Dolores Ruiz-Lupión ◽  
...  
Keyword(s):  
Food Web ◽  
Pest Control ◽  
Web Engineering ◽  
Biological Pest Control

scholarly journals Unexpected Effects of Local Management and Landscape Composition on Predatory Mites and Their Food Resources in Vineyards

Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 180
Author(s):  
Stefan Möth ◽  
Andreas Walzer ◽  
Markus Redl ◽  
Božana Petrović ◽  
Christoph Hoffmann ◽  
...  
Keyword(s):  
Pest Control ◽  
Predatory Mites ◽  
Mite Species ◽  
Landscape Composition ◽  
Pesticide Use ◽  
Biological Pest Control ◽  
Phytophagous Mites ◽  
Spontaneous Vegetation ◽  
Important Food Source ◽  
Eriophyoid Mite

Viticultural practices and landscape composition are the main drivers influencing biological pest control in vineyards. Predatory mites, mainly phytoseiid (Phytoseiidae) and tydeoid mites (Tydeidae), are important to control phytophagous mites (Tetranychidae and Eriophyidae) on vines. In the absence of arthropod prey, pollen is an important food source for predatory mites. In 32 paired vineyards located in Burgenland/Austria, we examined the effect of landscape composition, management type (organic/integrated), pesticide use, and cover crop diversity of the inter-row on the densities of phytoseiid, tydeoid, and phytophagous mites. In addition, we sampled pollen on vine leaves. Typhlodromus pyri Scheuten was the main phytoseiid mite species and Tydeus goetzi Schruft the main tydeoid species. Interestingly, the area-related acute pesticide toxicity loading was higher in organic than in integrated vineyards. The densities of phytoseiid and tydeoid mites was higher in integrated vineyards and in vineyards with spontaneous vegetation. Their population also profited from an increased viticultural area at the landscape scale. Eriophyoid mite densities were extremely low across all vineyards and spider mites were absent. Biological pest control of phytophagous mites benefits from less intensive pesticide use and spontaneous vegetation cover in vineyard inter-rows, which should be considered in agri-environmental schemes.

Biological Pest Control in Mexico

2013 ◽  
Vol 58 (1) ◽  
pp. 119-140 ◽  
Author(s):  
Trevor Williams ◽  
Hugo C. Arredondo-Bernal ◽  
Luis A. Rodríguez-del-Bosque
Keyword(s):  
Pest Control ◽  
Biological Pest Control
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