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Browsing by Author "Cloyd, Raymond A."

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Determination of silicon concentration in some horticultural plants

Hogendorp, Brian K.; Cloyd, Raymond A.; Swiader, John M. (2012)

Although silicon is not an essential element, it is taken up by plants but is rarely quantified. Therefore, this study quantified the silicon concentration in 10 commonly grown horticultural plants including meadow sage ...
Effect of sugar-based compounds in enhancing the efficacy of insecticides against the western flower thrips

Cloyd, Raymond A.; Gillespie, Joshua D. (2012)

It has been proposed by greenhouse producers that adding sugar to a stomach poison insecticide enhances the efficacy of the insecticide in controlling western flower thrips (Frankliniella occidentalis). As such, a series ...
Efficacy of pesticide mixtures against the western flower thrips (Thysanoptera: Thripidae) under laboratory and greenhouse conditions

Willmott, Amy L.; Cloyd, Raymond A.; Zhu, Kun Yan (2013)

Western flower thrips, Frankliniella occidentalis Pergande is a commonly encountered and economically important insect pest of greenhouses. Greenhouse producers typically apply pesticides as mixtures to mitigate western ...
Interactions of light intensity, insecticide concentration, and time on the efficacy of systemic insecticides in suppressing populations of the sweetpotato whitefly (Hemiptera: Aleyrodidae) and the citrus mealybug (Hemiptera: Pseudococcidae)

Cloyd, Raymond A.; Williams, Kimberly A.; Byrne, Frank J.; Kemp, Kenneth E. (2012)

The impact of light intensity on the uptake and persistence of the systemic neonicotinoid insecticides, imidacloprid and dinotefuran, were evaluated in poinsettia (Euphorbia pulcherrima Willd.) and yellow sage (Lantana ...
Life history parameters of the rove beetle Atheta coriaria and efficacy against the fungus gnat Bradysia sp. nr. coprophila

Echegaray, Erik; Cloyd, Raymond A. (2011)

Fungus gnats (Bradysia spp.) are major pests of greenhouse production systems in the USA. A number of biological control agents have been successfully used in dealing with fungus gnats, including the rove beetle Atheta ...
Plant architecture and prey distribution influence foraging behavior of the predatory mite Phytoseiulus persimilis (Acari: Phytoseiidae)

Gontijo, Lessando M.; Nechols, James R.; Margolies, David C.; Cloyd, Raymond A. (2012)

The arrangement, number, and size of plant parts may influence predator foraging behavior, either directly, by altering the rate or pattern of predator movement, or, indirectly, by affecting the distribution and abundance ...
Tips on Operating a Profitable Greenhouse Business

Cloyd, Raymond A.; Faust, James E.; Konjoian, Peter; Uva, Wen-fei L.; Williams, Kimberly A. (O.F.A. Services, Inc., 2005)

Chapters include Six Levels of Greenhouse Cost Accounting; Using Spreadsheets as Cost Analysis Tools; Overhead or Fixed Costs; Square Foot Weeks: Applying Overhead Costs to the Greenhouse Production Area; Variable Costs: ...

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