NDLTD Global ETD Search
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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 1 to 3 of 3 (0.085 seconds)

Spelling suggestions: "subject:"mean lead beetle"" "subject:"jean lead beetle""

1

Population Dynamics for Key Pests in Organic Soybean Fields in Ohio and Suceptibility Differences Between Organic and Conventional Soybean

May, Colleen Elizabeth 08 September 2008 (has links)
No description available.
Entomology
bean leaf beetle
soybean aphid
mexican bean beetle
organic
2

DEVELOPMENT OF A DEGREE DAY MODEL AND ECONOMIC THRESHOLDS FOR CEROTOMA TRIFURCATA (COLEOPTERA: CHRYSOMELIDAE) IN ONTARIO

McCreary, Cara M. 06 September 2013 (has links)
Bean leaf beetle, Cerotoma trifurcata (Forster) (Coleoptera: Chrysomelidae), is an economic pest of soybean in Ontario. Field cage studies were conducted in 2010-2011 to determine voltinism in southern Ontario and the effect of C. trifurcata feeding during soybean reproductive stages on soybean yield and quality. Thermal requirements for C. trifurcata development were determined in a laboratory study. Results of field and laboratory studies support the occurrence of one generation of C. trifurcata in southern Ontario. Pod-feeding increased with both number of beetles and soybean reproductive stage. An increase in defoliation and a reduction in seed quality were observed with increasing number of beetles. Monitoring programs for late-season pod-feeding should begin when degree days approach 500 (base 9.31°C). Economic thresholds for C. trifurcata during soybean reproductive stages range from 0.27 to 2.00 beetles per plant or 8 to 60 beetles per m of row. / Ontario Ministry of Agriculture and Food – University of Guelph Sustainable Production (Plants) Program and Grain Farmers of Ontario through the Farm Innovation Program.
Bean leaf beetle
Cerotoma trifurcata
degree day model
economic injury level
economic threshold
thermal requirements
soybeans
3

The Effect of Mid-season Foliar Fungicide and Insecticide, Applied Alone or in Combination, on Soybean Yield in Ohio

Ng, Sin Joe 30 August 2017 (has links)
No description available.
Agriculture
Agronomy
Entomology
Plant Pathology
Plant Sciences
soybean
fungicide
insecticide
soybean disease
soybean insect pest
frogeye leaf spot
brown spot
bean leaf beetle
model
yield
agronomy
Ohio agriculture

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