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45 results on '"Horak, Michael J."'

3. Capitalizing on Sustainable Equipment Trends: How electric, battery and solar-powered equipment supports the environment, demonstrates innovation and attracts new customers

Author

Horak, Michael J.

Subjects
Electrical machinery -- Innovations -- Environmental aspects -- Forecasts and trends, Solar energy -- Innovations -- Environmental aspects -- Forecasts and trends, Electrical equipment and supplies -- Innovations -- Environmental aspects -- Forecasts and trends, Market trend/market analysis, Agricultural industry, Business, Metals, metalworking and machinery industries
Abstract

Everywhere you look, sustainable landscaping equipment is gaining traction at a rapid rate. Traditional gas-powered companies are introducing new lines of electric products, and battery-propelled companies are expanding their existing [...]

Published
2022

6. Characterization of roundup ready flex cotton, 'MON 88913', for use in ecological risk assessment: evaluation of seed germination, vegetative and reproductive growth, and ecological interactions

Author

Horak, Michael J., Rosenbaum, Eric W., Woodrum, Carrie L., Martens, Amy B., Mery, Ramon F., Cothren, J. Tom, Burns, J. Austin, Nickson, Thomas E., Pester, Todd A., Jiang, Changjian, Hart, Jesse L., and Sammons, Bernard

Subjects
Genetically modified crops -- Research, Genetically modified crops -- Environmental aspects, Genetic variation -- Research, Agricultural industry, Business
Abstract

Biological and ecological data collected on a genetically modified crop and an appropriate control are useful for assessing potential ecological risk. Specific characteristics studied are selected on the basis of relevance to potential ecological effects, are well known, and are accepted by plant breeders. In these studies, germination, vegetative and reproductive growth, or ecological characteristics of Roundup Ready Flex cotton, MON 88913 were compared with a negative control, MON 88913(-). Statistically significant differences, when detected, were considered in the context of the genetic variation known to occur in cotton and their potential impact on plant pest (weed) potential (ecological risk). Experimental results revealed no effects of the genetic modification that would result in increased pest potential or ecological risk of MON 88913 compared with MON 88913(-).

Published
2007

7. Front Cover: Cover Image, Volume 74, Issue 10

Author

Busi, Roberto, primary, Goggin, Danica E, additional, Heap, Ian M, additional, Horak, Michael J, additional, Jugulam, Mithila, additional, Masters, Robert A, additional, Napier, Richard M, additional, Riar, Dilpreet S, additional, Satchivi, Norbert M, additional, Torra, Joel, additional, Westra, Phillip, additional, and Wright, Terry R, additional

Published
2018
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8. Weed resistance to synthetic auxin herbicides

Author

Busi, Roberto, primary, Goggin, Danica E, additional, Heap, Ian M, additional, Horak, Michael J, additional, Jugulam, Mithila, additional, Masters, Robert A, additional, Napier, Richard M, additional, Riar, Dilpreet S, additional, Satchivi, Norbert M, additional, Torra, Joel, additional, Westra, Phillip, additional, and Wright, Terry R, additional

Published
2018
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9. Characterization of Natural and Simulated Herbivory on Wild Soybean (Glycine soja Seib. et Zucc.) for Use in Ecological Risk Assessment of Insect Protected Soybean

Author

Goto, Hidetoshi, primary, Shimada, Hiroshi, additional, Horak, Michael J., additional, Ahmad, Aqeel, additional, Baltazar, Baltazar M., additional, Perez, Tim, additional, McPherson, Marc A., additional, Stojšin, Duška, additional, Shimono, Ayako, additional, and Ohsawa, Ryo, additional

Published
2016
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10. Pollen-Mediated Gene Flow in Maize: Implications for Isolation Requirements and Coexistence in Mexico, the Center of Origin of Maize

Author

Baltazar, Baltazar M., primary, Castro Espinoza, Luciano, additional, Espinoza Banda, Armando, additional, de la Fuente Martínez, Juan Manuel, additional, Garzón Tiznado, José Antonio, additional, González García, Juvencio, additional, Gutiérrez, Marco Antonio, additional, Guzmán Rodríguez, José Luis, additional, Heredia Díaz, Oscar, additional, Horak, Michael J., additional, Madueño Martínez, Jesús Ignacio, additional, Schapaugh, Adam W., additional, Stojšin, Duška, additional, Uribe Montes, Hugo Raúl, additional, and Zavala García, Francisco, additional

Published
2015
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39. Sex Pheromone of the Noctuid Moth, Tyta luctuosa (Lepidoptera: Noctuidae), a Candidate Biological Control Agent of Field Bindweed.

Author

Wan-Hong Cao, Charlton, Ralph E., Nechols, James R., and Horak, Michael J.

Subjects
PHEROMONES, NOCTUIDAE, BINDWEEDS, BIOLOGICAL weed control
Abstract

Laboratory studies were conducted to identify the sex pheromone of Tyta luctuosa (Denis and Schiffermuller), a Eurasian noctuid moth that has been imported and released to aid in control of field bindweed, Convolvulus arvensis L. Using gas chromatography-mass spectrometry, together with electroantennogram and windtunnel bioassays of male moths, two compounds, (Z)9-tetradecenal and (Z)-11-hexadecenal, were identified as the major pheromone components. Wholegland extracts contained these components, as well as two other major compounds, (Z)-9-tetradecanol and (Z)-11-hexadecanol. However, the two alcohols were not detected in airborne emissions of calling females. Ratios of Z9-14:ALD to Z11-16:ALD were markedly different for whole-gland extracts and airborne emissions (1:3 and 2:1, respectively). Also, although the total amount of the two compounds varied nearly eight-fold among individuals (22-167 ng, mean 75 ± 56 ng [SD]) in gland extracts, the Z9-14:ALD/Z11-16:ALD ratio was relatively constant (0.3 ± 0.15). On average, calling females released 94 ng of Z9-14:ALD and 45 ng Z11-16:ALD per hour, with a mean ratio of 2.2. In wind tunnel tests, 69% of males exhibited complete upwind flights and touched the stimulus source in response to a synthetic pheromone blend that mimicked the female-produced Z9-14:ALD/Z11-16:ALD airborne concentration and ratio, as compared with 82% and 50% in response to calling females and pheromone gland extracts, respectively. Tyta luctuosa adults are vagile, and both adults and larvae are cryptie in the field-factors that make recoveries of released insects unlikely. Therefore, our data will contribute to the development of a pheromone-based monitoring tool to help assess colonization and establishment of this potentially useful weed biological control agent. [ABSTRACT FROM AUTHOR]

Published
2003
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40. Photoperiodic Regulation of Seasonal Diapause Induction in the Field Bindweed Moth, Tyta luctuosa(Lepidoptera: Noctuidae)

Author

Miller, Neil W, Nechols, James R, Horak, Michael J, and Loughin, Thomas M

Abstract

Field and laboratory experiments were conducted to determine the influence of photoperiod on diapause induction in an Italian population of the moth Tyta luctuosa(Denis and Schiffermuller), which has been released as a potential biological control agent of field bindweed in North America. In the laboratory, the percentage of pupae that entered diapause at 25°C was related inversely to photoperiod. Most, and possibly all, instars were sensitive to photoperiod. Sensitivity increased as a function of both the larval stage of development and the duration of exposure to diapause-inducing short day lengths. Soil-inhabiting, late fifth instars and pupae did not respond to photoperiod. All insects underwent diapause when reared in the laboratory at 13.5:10.5 (L:D) h. The critical photoperiod (50% diapause) was estimated to be between L:D 15:9 and 15.5:8.5 h. About 20% of T. luctuosaentered diapause under the longest day length (16:8 [L:D] h), indicating a strong tendency for diapause in this population. When T. luctuosawas field-reared under natural day lengths and temperatures, a variable but generally high percentage underwent diapause from spring to late summer. Under the shorter day lengths of August and early September, most of the insects entered diapause and the variation was lower. A variable diapause response may represent an adaptation to periods of unpredictable bindweed quality during summers in southern Europe. Our findings have immediate utility for developing mass-rearing and release strategies for T. luctuosa.In addition, they will allow better predictions of its phenology and population dynamics if this species becomes established in North America.

Published
2000
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