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Full-Text Articles in Life Sciences

En El Do De La Unión Europea: Registro De Denominaciones De Origen Protegidas, Indicaciones Geográficas Protegidas, Etc., Luis González Vaqué, Cristina Vidreras Pérez Dec 2014

En El Do De La Unión Europea: Registro De Denominaciones De Origen Protegidas, Indicaciones Geográficas Protegidas, Etc., Luis González Vaqué, Cristina Vidreras Pérez

Luis González Vaqué

No abstract provided.


Ultrasonication Of Sugary -2 Corn For Enhanced Enzymatic Hydrolysis, Melissa Tabada Montalbo-Lomboy, Lawrence A. Johnson, Samir Kumar Khanal Dec 2014

Ultrasonication Of Sugary -2 Corn For Enhanced Enzymatic Hydrolysis, Melissa Tabada Montalbo-Lomboy, Lawrence A. Johnson, Samir Kumar Khanal

Lawrence A. Johnson

This study investigates the potential application of high powered ultrasonics as a liquefaction pretreatment of sugary-2 corn slurry. Ground sugary-2 corn ( Zea Mays L. ) slurry was treated with ultrasonics at 20kHz and amplitudes of 192-320 µ m pp (peak-to-peak) for 5, 10, 15, 20 and 40 seconds. After sonication, enzymes (Stargen TM 001) were added to the samples to hydrolyze the starch into fermentable sugars. It was found that the reducing sugar released in the treated samples were 6-fold higher than in the non-treated samples. Scanning electron microscopy images revealed that the sugary starch was partially gelatinized during sonication. This ...


Health Professionals’ Roles In Animal Agriculture, Climate Change, And Human Health, Aysha Z. Akhtar, Michael Greger, Hope Ferdowsian, Erica Frank Dec 2014

Health Professionals’ Roles In Animal Agriculture, Climate Change, And Human Health, Aysha Z. Akhtar, Michael Greger, Hope Ferdowsian, Erica Frank

Michael Greger, MD, FACLM

What we eat is rapidly becoming an issue of global concern. With food shortages, the rise in chronic disease, and global warming, the impact of our dietary choices seems more relevant today than ever. Globally, a transition is taking place toward greater consumption of foods of animal origin, in lieu of plantbased diets. With this transition comes intensification of animal agriculture that in turn is associated with the emergence of zoonotic infectious diseases, environmental degradation, and the epidemics of chronic disease and obesity. Health professionals should be aware of these trends and consider them as they promote healthier and more ...


Combining Pediocin (Alta™ 2341) With Irradiation For Control Of Listeria Monocytogenes, C. H. Chen, Joseph G. Sebranek, James S. Dickson, Aubrey F. Mendonca Nov 2014

Combining Pediocin (Alta™ 2341) With Irradiation For Control Of Listeria Monocytogenes, C. H. Chen, Joseph G. Sebranek, James S. Dickson, Aubrey F. Mendonca

James S. Dickson

Pediocin (ALTA™ 2341) was studied in combination with irradiation treatments for control of Listeria monocytogenes on ready-to-eat (RTE) meat products. Both pediocin and irradiation were effective but the combination was highly effective and synergistic. Therefore, the use of pediocin for RTE meats that are irradiated should permit use of lower irradiation doses and improved product quality because of less irradiation-induced off-odors


The Prevalence Of Food-Borne Pathogenic Organisms In Swine And Pork: A Pilot Survey And Demonstration Project From Production Farm To Dressed Carcasses, James Mckean, George W. Beran, Terry Proescholdt, Peter Davies, Paa Turkson, James Kliebenstein, Lorraine J. Hoffman, James S. Dickson Nov 2014

The Prevalence Of Food-Borne Pathogenic Organisms In Swine And Pork: A Pilot Survey And Demonstration Project From Production Farm To Dressed Carcasses, James Mckean, George W. Beran, Terry Proescholdt, Peter Davies, Paa Turkson, James Kliebenstein, Lorraine J. Hoffman, James S. Dickson

James S. Dickson

This project was unable to demonstrate a protective effect of All in-All out (AIAO) over continuous flow production systems for swine from organisms of food safety interest at the abattoir. It provided valuable information about the ecology of Salmonella spp., Campylobacter spp. and Yersinia enterocolitica on farms and the abattoir. Implanted electronic microchips have been demonstrated as feasible for carcass identification from farm to abattoir cooler. Doubts about predictive values of commonly used detection procedures for on-farm prevalence of these organisms are raised. A new paradigm to explain the nexus of on-farm activities on the microbiologic status of pigs presented ...


Diets Differing In Energy And Fiber Content Affected Adipose Tissue Quality Of Carcasses From Pigs Divergently Selected For Residual Feed Intake, Emily Arkfield, Emily Hamman, Jordy E. Berger, Roger Johnson, Jennifer Young, John F. Patience, Jack C. M. Dekkers, Nicholas K. Gabler, Steven M. Lonergan, Elisabeth J. Huff-Lonergan Nov 2014

Diets Differing In Energy And Fiber Content Affected Adipose Tissue Quality Of Carcasses From Pigs Divergently Selected For Residual Feed Intake, Emily Arkfield, Emily Hamman, Jordy E. Berger, Roger Johnson, Jennifer Young, John F. Patience, Jack C. M. Dekkers, Nicholas K. Gabler, Steven M. Lonergan, Elisabeth J. Huff-Lonergan

Steven M. Lonergan

The goal of this experiment was to determine the impact of high and low energy diets on adipose tissue quality of animals selected for divergent residual feed intake (RFI). Pigs of a low RFI (efficient) line and high RFI (less efficient) line were placed on either a high energy, low fiber (HELF) diet or a low energy, high fiber (LEHF) diet. Line had no impact on adipose tissue color or iodine value. Regardless of line, feeding a diet low in energy resulted in adipose tissue with a darker colored and increased iodine value, when compared to adipose tissue from animals ...


The Impact Of Divergent Selection For Residual Feed Intake On Meat Quality Traits Of Loins From Pigs On High Or Low Energy Diets, Emily Arkfield, Emily Hamman, Jordy E. Berger, Roger Johnson, Jennifer Young, Christine A. Fedler, Kenneth J. Prusa, John F. Patience, Jack C. M. Dekkers, Nicholas K. Gabler, Steven M. Lonergan, Elisabeth J. Huff-Lonergan Nov 2014

The Impact Of Divergent Selection For Residual Feed Intake On Meat Quality Traits Of Loins From Pigs On High Or Low Energy Diets, Emily Arkfield, Emily Hamman, Jordy E. Berger, Roger Johnson, Jennifer Young, Christine A. Fedler, Kenneth J. Prusa, John F. Patience, Jack C. M. Dekkers, Nicholas K. Gabler, Steven M. Lonergan, Elisabeth J. Huff-Lonergan

Steven M. Lonergan

The goal of this experiment was to determine the impact of low and high energy diets on the meat quality of animals selected for divergent residual feed intake (RFI). Low RFI (efficient) and high RFI (less efficient) pigs were fed either a high energy, low fiber (HELF) or low energy, high fiber (LEHF) diet. Diet had little impact on meat quality. Selection for low RFI animals resulted in loins with greater water holding capacity and sensory juiciness. High RFI animals have loins with greater percent lipid, color and marbling scores, and a* values (are more red in color). It is ...


Effect Of Pig Age At Slaughter On Fresh Pork Quality, Corey Wagner, Elisabeth J. Huff-Lonergan, Andrzej A. Sosnicki, Steven M. Lonergan Nov 2014

Effect Of Pig Age At Slaughter On Fresh Pork Quality, Corey Wagner, Elisabeth J. Huff-Lonergan, Andrzej A. Sosnicki, Steven M. Lonergan

Steven M. Lonergan

Differences in pork quality were observed between the three age groups defined by age at 275 pounds. Faster growing pigs had pork loins with higher marbling scores and greater lipid content than slower growing pigs. Loins from faster growing pigs had lower juiciness and tenderness scores than loins from slower growing pigs. Differences in pork quality could not be attributed to lower ultimate pH, but could be due to variations in postmortem proteolysis associated with growth.


Impact Of Mitochondrially Targeted Novel Antioxidant On Pig Feed Efficiency, Mathew R. O'Neil, George A. Kraus, Nicholas K. Gabler, Steven M. Lonergan, Donald C. Beitz Nov 2014

Impact Of Mitochondrially Targeted Novel Antioxidant On Pig Feed Efficiency, Mathew R. O'Neil, George A. Kraus, Nicholas K. Gabler, Steven M. Lonergan, Donald C. Beitz

Steven M. Lonergan

Thirty crossbred barrows were used to evaluate the effects of conventional and mitochondrially targeted antioxidants on body weight, average daily gain, feed efficiency, and lean tissue accretion. The study did not yield statistically significant results for any variable measured. However, for each variable measured, the ranking of responses for treatments matched what was predicted by the hypothesis. Our results suggest that use of mitochondrially targeted antioxidants show promise in improving feed efficiency


Impact Of Liquid Swine Manure Application And Cover Crops On Groundwater Quality, Carl H. Pederson, Matthew J. Helmers, Rameshwar S. Kanwar, Antonio P. Mallarino Nov 2014

Impact Of Liquid Swine Manure Application And Cover Crops On Groundwater Quality, Carl H. Pederson, Matthew J. Helmers, Rameshwar S. Kanwar, Antonio P. Mallarino

Matthew J. Helmers

The primary objective of this project was to determine the impact of appropriate rates of swine manure applications to corn and soybeans based on nitrogen and phosphorus requirements of crops, soil phosphorus accumulation, and the potential of nitrate and phosphorus leaching to groundwater. Another purpose of this long-term experimental study was to develop and recommend appropriate manure and nutrient management practices to producers to minimize water contamination potential and enhance the use of swine manure as fertilizer. A third component of this study was to determine the potential effects of rye as a cover crop to reduce nitrate loss to ...


Simultaneous Saccharification And Fermentation Of Ultrasonically Treated Corn Slurry, Melissa Tabada Montalbo-Lomboy, Samir Kumar Khanal, Johannes Van Leeuwen, D. Raj Raman, Larson Dunn Jr., David A. Grewell Nov 2014

Simultaneous Saccharification And Fermentation Of Ultrasonically Treated Corn Slurry, Melissa Tabada Montalbo-Lomboy, Samir Kumar Khanal, Johannes Van Leeuwen, D. Raj Raman, Larson Dunn Jr., David A. Grewell

Johannes van Leeuwen

The potential application of ultrasonics as a pretreatment process to enhance saccharification of starch in corn-to-ethanol plants is evaluated in this paper. Due to energy intensive use of steam in hydro-cooking, ultrasonics poses a promising alternative as a pretreatment method. Two independent ultrasonic experiments were conducted at a frequency of 20 kHz; batch and continuous flow treatment. Corn slurry was obtained from a nearby ethanol plant and sonicated in batch mode at amplitude of 144µmpeak-to-peak (p-p) for 90 s using a catenoidal horn with a 10 mm diameter face. In the continuous flow treatment, corn slurry was pumped through a ...


Flax: Food And Fiber, Madeleine K. Charney Oct 2014

Flax: Food And Fiber, Madeleine K. Charney

Madeleine K. Charney

Highlights the versatile and nutritious flax plant, now cultivated worldwide.


Ranch-Level Economic Impacts Of Altering Grazing Policies On Federal Land To Protect The Greater Sage-Grouse, John A. Tanaka, Neil R. Rimbey, L. Allen Torell Oct 2014

Ranch-Level Economic Impacts Of Altering Grazing Policies On Federal Land To Protect The Greater Sage-Grouse, John A. Tanaka, Neil R. Rimbey, L. Allen Torell

John A Tanaka

No abstract provided.


Performance And Prospects Of Rag Genes For Management Of Soybean Aphid, Louis S. Hesler, Mariana Victoria Chiozza, Matthew E. O'Neal, Gustavo C. Macintosh, Kelley J. Tilmon, Desmi I. Chandrasena, Nicholas A. Tinsley, Silvia Cianzio, Alejandro C. Costamagna, Eileen M. Cullen, Christina D. Difonzo, Bruce Potter, David W. Ragsdale, Kevin L. Steffey, Kenneth J. Koehler Oct 2014

Performance And Prospects Of Rag Genes For Management Of Soybean Aphid, Louis S. Hesler, Mariana Victoria Chiozza, Matthew E. O'Neal, Gustavo C. Macintosh, Kelley J. Tilmon, Desmi I. Chandrasena, Nicholas A. Tinsley, Silvia Cianzio, Alejandro C. Costamagna, Eileen M. Cullen, Christina D. Difonzo, Bruce Potter, David W. Ragsdale, Kevin L. Steffey, Kenneth J. Koehler

Matthew E. O'Neal

The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), is an invasive insect pest of soybean [Glycine max (L.) Merr. (Fabaceae)] in North America, and it has led to extensive insecticide use in northern soybean-growing regions there. Host plant resistance is one potential alternative strategy for managing soybean aphid. Several Rag genes that show antibiosis and antixenosis to soybean aphid have been recently identified in soybean, and field-testing and commercial release of resistant soybean lines have followed. In this article, we review results of field tests with soybean lines containing Rag genes in North America, then present results from a coordinated ...


Population Structure And Genetic Diversity Of The Boll Weevil (Coleoptera: Curculionidae) On Gossypium In North America, Adam P. Kuester, Robert W. Jones, Thomas W. Sappington, Kyung Seok Kim, Norman B. Barr, Richard L. Roehrdanz, John D. Nason Oct 2014

Population Structure And Genetic Diversity Of The Boll Weevil (Coleoptera: Curculionidae) On Gossypium In North America, Adam P. Kuester, Robert W. Jones, Thomas W. Sappington, Kyung Seok Kim, Norman B. Barr, Richard L. Roehrdanz, John D. Nason

Thomas W. Sappington

Although the boll weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), is a devastating pest in the United States and Mexico, its population structure and genetic diversity in Mexico on wild and cultivated cotton hosts (genus Gossypium) is poorly understood. Past studies using morphology, host use, and distribution records suggest that A.grandis grandis comprises three forms with host-associated characteristics: the southeastern form (from domesticated Gossypium hirsutum L., southeastern United States and northeastern Mexico), the thurberia form (from Gossypium thurberi Todaro, Arizona and northwestern Mexico), and the Mexican form (from multiple Gossypium species and other malvaceous plant genera in the remainder ...


Development Of An Alphavirus Replicon Classical Swine Fever Virus Vaccine Candidate, J. Dustin Loy, Mark Mogler, Jill Gander, Kurt I. Kamrud, D.L. Hank Harris Oct 2014

Development Of An Alphavirus Replicon Classical Swine Fever Virus Vaccine Candidate, J. Dustin Loy, Mark Mogler, Jill Gander, Kurt I. Kamrud, D.L. Hank Harris

John Loy

Classical swine fever virus (CSFV) E2 glycoprotein was expressed in an alphavirus based replicon expression system. Vaccinated pigs developed CSFV-specific antibodies. This is the first known use of this technology against CSFV.


Evaluation Of Double Stranded Rna For The Prevention Of Infectious Myonecrosis Virus (Imnv) In Litopenaeus Vannamei, J. Dustin Loy, Lyric C. Bartholomay, D. L. Hank Harris Oct 2014

Evaluation Of Double Stranded Rna For The Prevention Of Infectious Myonecrosis Virus (Imnv) In Litopenaeus Vannamei, J. Dustin Loy, Lyric C. Bartholomay, D. L. Hank Harris

John Loy

Double stranded RNA was synthesized in vitro with sequences corresponding to portions of the IMNV genome and were injected into shrimp prior to challenge with IMNV. This is the first time these methods have been used to prevent IMN in shrimp.


Experimental Transmission Of Necrotizing Hepatopancreatitis Bacteria To Post-Larval Litopeneaus Vannamei, J. Dustin Loy, D. L. Hank Harris Oct 2014

Experimental Transmission Of Necrotizing Hepatopancreatitis Bacteria To Post-Larval Litopeneaus Vannamei, J. Dustin Loy, D. L. Hank Harris

John Loy

Day 15 specific pathogen free Post-Larval Pacific White Shrimp, Litopeneaus vannamei, were infected with Necrotizing Hepatopancreatitis bacteria (NHPB) by per os exposure. This is the first documented report of controlled post larval (PL) infection and mortality with NHPB.


Evaluation Of In Vivo Hemocyte Phagocytosis Of Microsphere Beads In Litopenaeus Vannamei Utilizing Flow Cytometry Following Administration Of Bacterial Lipopolysaccharides, J. Dustin Loy, D. L. Hank Harris Oct 2014

Evaluation Of In Vivo Hemocyte Phagocytosis Of Microsphere Beads In Litopenaeus Vannamei Utilizing Flow Cytometry Following Administration Of Bacterial Lipopolysaccharides, J. Dustin Loy, D. L. Hank Harris

John Loy

Carboxylate modified microspheres were injected into shrimp and phagocytosis of these particles was measured using flow cytometry following treatment with microbial lipopolysaccharides. This is the first time these methods have been used to assess innate immune responses in shrimp


Management Recommendations For Soybean Aphid (Hemiptera: Aphididae) In The United States, Erin W. Hodgson, B. P. Mccornack, K. Tilmon, J. J. Knodel Sep 2014

Management Recommendations For Soybean Aphid (Hemiptera: Aphididae) In The United States, Erin W. Hodgson, B. P. Mccornack, K. Tilmon, J. J. Knodel

Erin W. Hodgson

Soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), is the primary pest of soybean, Glycine max L., in the north central region. After more than a decade of research and extension efforts to manage this pest, several consensus management recommendations have been developed for sustainable and profitable soybean production. A summary of integrated pest management (IPM) tactics for soybean aphid are discussed, including cultural, genetic, economic, and chemical controls. To date, sampling and timely foliar insecticides are routinely recommended to protect yield and delay genetic resistance to insecticides. Host plant resistance is a new tool that can regulate populations and reduce ...


Bean Leaf Beetles Are Moving To Soybean, Erin W. Hodgson Sep 2014

Bean Leaf Beetles Are Moving To Soybean, Erin W. Hodgson

Erin W. Hodgson

In March, I predicted low overwintering mortality of bean leaf beetles based on our mild winter. You may have noticed adults became active in alfalfa starting in April. They are strongly attracted to soybean and will slowly move as plants emerge this month. The adults fly short distances (less than 167 feet on average) and infestations can be highly aggregated. Some research plots around southern and central Iowa have decent numbers feeding on unifoliates.


Insect Activity Update, Erin W. Hodgson Sep 2014

Insect Activity Update, Erin W. Hodgson

Erin W. Hodgson

During the last week of May, I heard about a few insect sightings in Iowa. The first was a report by ISU Extension and Outreach Field Agronomist Brian Lang in northeastern Iowa. He saw a soybean aphid on VC soybean in his small research plot near Decorah on May 28. I wasn’t surprised, given that part of the state is where we usually first see soybean aphid every year. Winged females deposit a few nymphs per day in May and June. You may need a hand lens to see first instars on small plants (Fig. 1A). Often I confirm ...


Ecological Compatibility Of Gm Crops And Biological Control, Jonathan G. Lundgren, Aaron J. Gassmann, Julio Bernal, Jian J. Duan, John Ruberson Sep 2014

Ecological Compatibility Of Gm Crops And Biological Control, Jonathan G. Lundgren, Aaron J. Gassmann, Julio Bernal, Jian J. Duan, John Ruberson

Aaron J. Gassmann

Insect-resistant and herbicide-tolerant genetically modified (GM) crops pervade many modern cropping systems (especially field-cropping systems), and present challenges and opportunities for developing biologically based pest-management programs. Interactions between biological control agents (insect predators, parasitoids, and pathogens) and GM crops exceed simple toxicological relationships, a priority for assessing risk of GM crops to non-target species. To determine the compatibility of biological control and insect-resistant and herbicide-tolerant GM crop traits within integrated pest-management programs, this synthesis prioritizes understanding the bi-trophic and prey/host-mediated ecological pathways through which natural enemies interact within cropland communities, and how GM crops alter the agroecosystems in which ...


Do You Need To Treat For Adult Corn Rootworm This Year?, Erin W. Hodgson, Aaron J. Gassmann Sep 2014

Do You Need To Treat For Adult Corn Rootworm This Year?, Erin W. Hodgson, Aaron J. Gassmann

Aaron J. Gassmann

As reported in an earlier article, corn rootworm egg hatch in 2012 was slightly ahead of a normal year. Adults were first detected in Illinois last week and around Iowa this week. We’ve been getting many questions about when or if it is appropriate to treat the adults. Three factors must be taken into account before a foliar insecticide application is warranted.


Evaluation Of Corn Rootworm Management Practices In Northeast Iowa, Aaron J. Gassmann, Patrick J. Weber Sep 2014

Evaluation Of Corn Rootworm Management Practices In Northeast Iowa, Aaron J. Gassmann, Patrick J. Weber

Aaron J. Gassmann

The purpose of this study was to evaluate the effectiveness of Bt corn and soil insecticides, either alone or in combination, for management of corn rootworm. Evaluation of Bt hybrids included Smartstax, YieldGard VT3, Pioneer Optimum AcreMax1, Agrisure 3000GT, and Herculex XTRA. Soil insecticides evaluated were SmartChoice-SB 5G, Counter-SB 20G, Aztec-SB 4.67G, Lorsban 15G, Capture LFR 1.5FL, Aztec 2.1G, Force 3G, and Force 250CS.


Evaluation Of Smartstax, Herculex Xtra, And Conventional Corn For Control Of Corn Earworm, Aaron J. Gassmann, Patrick J. Weber Sep 2014

Evaluation Of Smartstax, Herculex Xtra, And Conventional Corn For Control Of Corn Earworm, Aaron J. Gassmann, Patrick J. Weber

Aaron J. Gassmann

The purpose of this study was to evaluate Smartstax corn, Herculex XTRA, and a nonBt true isoline for control of corn earworm. Data collected include stand counts, total kernels, and damaged kernels.


Concentrations And Size Distributions Of Airborne Particulate Matter And Bacteria In An Experimental Aviary Laying-Hen Chamber, Weichao Zheng, Yang Zhao, Hongwei Xin, Baoming Li, Richard S. Gates, Yuanhui Zhang, Michelle L. Soupir Sep 2014

Concentrations And Size Distributions Of Airborne Particulate Matter And Bacteria In An Experimental Aviary Laying-Hen Chamber, Weichao Zheng, Yang Zhao, Hongwei Xin, Baoming Li, Richard S. Gates, Yuanhui Zhang, Michelle L. Soupir

Michelle L. Soupir

High levels of airborne particulate matter (PM) and bacteria may exist in animal housing, which can be detrimental to the health of animals and workers. The sizes of these bioaerosols determine their aerial transport behaviors and depositions in the respiratory tracts of animals and humans. However, little is known regarding the size distribution of airborne PM and bacteria in livestock houses, especially in alternative animal housing systems that aim to enhance animal welfare, such as aviary hen-housing systems. The study reported here was therefore conducted to characterize the concentrations and size distributions of airborne bacteria (in count) and PM (both ...


Association Of Antibiotic Resistance In Agricultural Escherichia Coli Isolates With Attachment To Quartz, Ping Liu, Michelle L. Soupir, Martha R. Zwonitzer, Bridgette Huss, Laura R. Jarboe Sep 2014

Association Of Antibiotic Resistance In Agricultural Escherichia Coli Isolates With Attachment To Quartz, Ping Liu, Michelle L. Soupir, Martha R. Zwonitzer, Bridgette Huss, Laura R. Jarboe

Michelle L. Soupir

Surface water can be contaminated by bacteria from various sources, including manure from agricultural facilities. Attachment of these bacteria to soil and organic particles contributes to their transport through the environment, though the mechanism of attachment is unknown. As bacterial attachment to human tissues is known to be correlated with antibiotic resistance, we have investigated here the relationship between bacterial attachment to environmental particles and antibiotic resistance in agricultural isolates. We evaluated 203 Escherichia coliisolates collected from swine facilities for attachment to quartz, resistance to 13 antibiotics, and the presence of genes encoding 13 attachment factors. The genes encoding type ...


Understanding Successful Resistance Management: The European Corn Borer And Bt Corn In The United States, Blair D. Siegfried, Richard L. Hellmich Sep 2014

Understanding Successful Resistance Management: The European Corn Borer And Bt Corn In The United States, Blair D. Siegfried, Richard L. Hellmich

Richard L Hellmich

The European corn borer, Ostrinia nubilalis Hübner (Lepidoptera: Crambidae) has been a major pest of corn and other crops in North America since its accidental introduction nearly a hundred years ago. Wide adoption of transgenic corn hybrids that express toxins from Bacillus thuringiensis, referred to as Bt corn, has suppressed corn borer populations and reduced the pest status of this insect in parts of the Corn Belt. Continued suppression of this pest, however, will depend on managing potential resistance to Bt corn, currently through the high-dose refuge (HDR) strategy. In this review, we describe what has been learned with regard ...


Managing The Risk Of European Com Borer Resistance To Bt Corn, Terrance M. Hurley, Silvia Secchi, Bruce A. Babcock, Richard L. Hellmich Sep 2014

Managing The Risk Of European Com Borer Resistance To Bt Corn, Terrance M. Hurley, Silvia Secchi, Bruce A. Babcock, Richard L. Hellmich

Richard L Hellmich

New pesticidal crops are taking advantage of advances in geneticengineering. For example, corn has been engineered to express Bt proteinsthat are toxic to the European corn borer. These crops are effective pestmanagement tools for United States growers. However, there is concern thatpests will develop resistance to these crops resulting in the increased useof more hazardous pesticides. The purpose of this paper is to develop astochastic dynamic bioeconomic simulation model to help guide regulatorypolicy designed to mitigate the threat of resistance to new pesticidal crops.The model is used to evaluate the insect resistance management guidelinesmandated by the United States Environmental ...