California Agriculture
California Agriculture
California Agriculture
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California Agriculture

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Research articles

Surveys of 12 California crops for phytoseiid predatory mites show changes compared to earlier studies
by Elizabeth E. Grafton-Cardwell, Walter Bentley, Mary Bianchi, Frances E. Cave, Rachel Elkins, Larry Godfrey, Ping Gu, David Haviland, David Headrick, Mark Hoddle, James McMurtry, Maria Murrietta, Nicholas Mills, Yuling Ouyang, Carolyn Pickel, Stephanie Rill, Menelaos C. Stavrinides, Lucia G. Varela
| Full text HTML  | PDF  
In phytoseiid samples from 25 counties from 2000 to 2018, the western predatory mite, long recognized as an important biological control agent, was found in relatively low numbers.
Phytoseiid mites are key predators in agricultural crops. However, not all species regulate pest populations below economic thresholds, and therefore knowledge of which species are associated with particular crops aids pest control recommendations. Surveys of 12 crops across six geographical regions of California demonstrated that phytoseiid species varied by crop and geographical location, with subtropical crops exhibiting the lowest species diversity and grape the greatest. The western predatory mite, Galendromus occidentalis, long cited as a dominant species in California crops, was not found to be the major species in most situations. Euseius stipulatus, a species introduced in the 1970s, was found in the surveyed crops in many areas of the state and appears to be displacing E. hibisci along the south coast.

News and opinion

RESEARCH HIGHLIGHTS
Research highlights
by Lucien Crowder
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Recent articles from the Agricultural Experiment Station campuses and UC ANR's county offices, institutes and research and extension centers.

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Volume 0, Number 0

Research articles

Surveys of 12 California crops for phytoseiid predatory mites show changes compared to earlier studies
by Elizabeth E. Grafton-Cardwell, Walter Bentley, Mary Bianchi, Frances E. Cave, Rachel Elkins, Larry Godfrey, Ping Gu, David Haviland, David Headrick, Mark Hoddle, James McMurtry, Maria Murrietta, Nicholas Mills, Yuling Ouyang, Carolyn Pickel, Stephanie Rill, Menelaos C. Stavrinides, Lucia G. Varela
| Full text HTML  | PDF  
In phytoseiid samples from 25 counties from 2000 to 2018, the western predatory mite, long recognized as an important biological control agent, was found in relatively low numbers.
Phytoseiid mites are key predators in agricultural crops. However, not all species regulate pest populations below economic thresholds, and therefore knowledge of which species are associated with particular crops aids pest control recommendations. Surveys of 12 crops across six geographical regions of California demonstrated that phytoseiid species varied by crop and geographical location, with subtropical crops exhibiting the lowest species diversity and grape the greatest. The western predatory mite, Galendromus occidentalis, long cited as a dominant species in California crops, was not found to be the major species in most situations. Euseius stipulatus, a species introduced in the 1970s, was found in the surveyed crops in many areas of the state and appears to be displacing E. hibisci along the south coast.

News and opinion

RESEARCH HIGHLIGHTS
Research highlights
by Lucien Crowder
Full text HTML  | PDF  

Recent articles from the Agricultural Experiment Station campuses and UC ANR's county offices, institutes and research and extension centers.


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