# positions[].organizations[].parent[].label
College of Agriculture and Life Sciences

# overview
Dr. Knutson develops educational materials and programs on integrated pest management (IPM) of insect pests of cotton, wheat, sorghum, pecans, corn and other crops and supports county extension agents with educational programs in IPM. He serves as statewide coordinator for biological control programs for Extension entomology faculty; develops cooperative programs on biological control and educational materials.

# hrJobTitle
Retired Professor and Extension Specialist

# keywords[]
Evaluation Of Integrated Pest Management

# educationAndTraining[].organization.label
Texas A&M University - (College Station, Texas, United States)

# publications[].label
Evaluation of Winter Barley Lines for Resistance to the Hessian Fly, 2017

# publications[].label
Establishment and biological success of Diorhabda elongata elongata on invasive Tamarix in Texas

# publications[].label
Development of Binomial Sequential Sampling Plans for Sugarcane Aphid (Hemiptera: Aphididae) in Commercial Grain Sorghum.

# publications[].label
Minutes of the 2014 Annual Meeting of the Society of Southwestern Entomologists

# publications[].label
Tolerance to feeding damage by cotton fleahopper (Hemiptera: Miridae) among genotypes representing adapted germplasm pools of United States upland cotton.

# publications[].label
Evaluation of Two-Leaf Sampling Units to Estimate Sugarcane Aphid (Hemiptera: Aphididae) Economic Thresholds in Commercial Grain Sorghum.

# publications[].label
Effects of pheromone dose, lure age, and trap design on capture of male pecan nut casebearer (Lepidoptera : Pyralidae) in pheromone-baited traps

# publications[].label
A degree-day model initiated by pheromone trap captures for managing pecan nut casebearer (Lepidoptera: Pyralidae) in pecans.

# publications[].label
Pecan nut casebearer (Lepidoptera: Pyralidae) sex pheromone used to monitor phenology and estimate effective range of traps

# publications[].label
Release of Trichogramma pretiosum in cotton with a novel ground sprayer

# publications[].label
Beginning success of biological control of saltcedars ( Tamarix spp.) in the southwestern USA.

# publications[].label
Interaction of parasitoids and resistant cultivars of wheat on Hessian fly, Mayetiola destructor say (Cecidomyiidae).

# publications[].label
Species Composition, Damage Potential, and Insecticide Susceptibility of Stink Bugs in Cotton in the Lower Gulf Coast Region of Texas

# publications[].label
Ants as Predators of Diorhabda elongate (Chrysomelidae), A Biological Control Agent of Saltcedar (Tamarix spp.), in Texas

# publications[].label
Defoliation by introduced Diorhabda elongata leaf beetles (Coleoptera : Chrysomelidae) reduces carbohydrate reserves and regrowth of Tamarix (Tamaricaceae)

# publications[].label
Minutes of the 2010 Annual Meeting of the Society of Southwestern Entomologists

# publications[].label
Field Evaluation of Diorhabda elongata and D. carinata (Coleoptera: Chrysomelidae) for Biological Control of Saltcedars (Tamarix spp.) in Northwest Texas

# publications[].label
Biology and Management of the Pecan Nut Casebearer (Lepidoptera: Pyralidae)

# publications[].label
Biological control of Salvinia molesta: Population dynamics of Cyrtobagous salviniae in Lake B. A. Steinhagen

# publications[].label
Molecular markers for species identification of Hessian fly males caught on sticky pheromone traps.

# publications[].label
Effect of the red imported fire ant on cotton aphid population density and predation of bollworm and beet armyworm eggs.

# publications[].label
Release of Platygaster hiemalis Forbes (Platygasteridae) in Texas for biological control of the Hessian fly, a Mayetiola destructor Say (Cecidomyiidae).

# publications[].label
Virulence and biotype analyses of Hessian fly (Diptera: Cecidomyiidae) populations from Texas, Louisiana, and Oklahoma.

# publications[].label
Taking the university to the people : The changing role of extension entomology

# publications[].label
Impact of red imported fire ant on foliar herbivores and natural enemies

# publications[].label
Dispersal of Boll Weevils (Coleoptera: Curculionidae) from Cotton Modules Before Ginning

# publications[].label
Integrating Models of Atmospheric Dispersion and Crop-Pest Dynamics: Linking Detection of Local Aphid Infestations to Forecasts of Region-Wide Invasion of Cereal Crops

# publications[].label
LIFE-TABLES AND POPULATION-DYNAMICS OF THE SOUTHWESTERN CORN-BORER (LEPIDOPTERA, PYRALIDAE) IN TEXAS CORN

# publications[].label
TEMPERATURE-DEPENDENT MODEL FOR PREDICTING EMERGENCE OF ADULT SOUTHWESTERN CORN-BORER (LEPIDOPTERA, PYRALIDAE) IN TEXAS

# publications[].label
Establishment, Hybridization, Dispersal, Impact, and Decline of Diorhabda spp. (Coleoptera: Chrysomelidae) Released for Biological Control of Tamarisk in Texas and New Mexico.

# publications[].label
Native ant responses to Solenopsis invicta buren reduction using broadcast baits.

# publications[].label
Efficacy of Selected Insecticides for Control of Fall Armyworm in Bermudagrass Hay, 2014

# publications[].label
Sampling predatory insects and spiders with the beat bucket method in Texas and Arizona

# publications[].label
Cotton Square Morphology Offers New Insights into Host Plant Resistance to Cotton Fleahopper (Hemiptera: Miridae) in Upland Cotton.

# publications[].label
Investigation of red imported fire ant, Solenopsis invicta, damage to peanut, Arachis hypogaea

# publications[].label
Density changes of two earwigs, Labidura riparia (Pallas) and Euborellia annulipes (Lucas) following fire ant reduction in Mumford, Texas

# publications[].label
Dispersal of boll weevils (Coleoptera: Curculionidae) from cotton modules before ginning.

# publications[].label
Resistance to Cotton Fleahopper Feeding in Primitive and Converted Race Stocks of Cotton, Gossypium hirsutum

# publications[].label
Recruitment of Natural Enemies of the Invasive Sugarcane Aphid Vary Spatially and Temporally in Sorghum Fields in the Southern Great Plains of the USA

# publications[].label
TRAP COMPARISONS AND BEHAVIORAL OBSERVATIONS FOR THE MALE SOUTHWESTERN CORN-BORER (LEPIDOPTERA, PYRALIDAE)

# publications[].label
Potential for Transport of Boll Weevils (Coleoptera: Curculionidae) to the Cotton Gin within Cotton Modules

# publications[].label
Minutes of the 2013 Annual Meeting of the Society of Southwestern Entomologists

# publications[].label
Evaluation of Barley (Hordeum vulgare) and Wheat (Triticum aestivum) for Resistance to Hessian Fly, Mayetiola destructor, in a Controlled Environment

# publications[].label
DIRECT EVALUATION OF NATURAL ENEMIES OF THE SOUTHWESTERN CORN-BORER (LEPIDOPTERA, PYRALIDAE) IN TEXAS CORN

# publications[].label
Biology of Diorhabda elongata deserticola (Coleoptera : Chrysomelidae), an Asian leaf beetle for biological control of saltcedars (Tamarix spp.) in the United States

# publications[].label
Detection of the spatiotemporal patterns of beetle-induced tamarisk (Tamarix spp.) defoliation along the Lower Rio Grande using Landsat TM images

# publications[].label
Evaluation of Sampling Methods and Development of Sample Plans for Estimating Predator Densities in Cotton

# publications[].label
Effects of malathion ULV applied for boll weevil eradication on survival and foraging activity of the red imported fire ant, Solenopsis invicta Buren, in Texas (USA) cotton

# publications[].label
Repeated Cold Exposure Effects on Mortality and Feeding Activity of the Salvinia Weevil, Cyrtobagous salviniae (Coleoptera: Curculionidae).

# publications[].label
Economic injury levels for sorghum midge, Stenodiplosis sorghicola and corn earworm, Helicoverpa zea, feeding on panicles of sorghum, Sorghum bicolor.

# publications[].label
Augmentation of green lacewing, Chrysoperla rufilabris, in cotton in Texas.

# publications[].label
Leiophron uniformis (Gahan) (Braconidae), a Parasitoid of the Cotton Fleahopper1 on Wild Hosts in Texas

# publications[].label
Evaluations of trap designs and a pheromone formulation used for monitoring pecan weevil, Curculio caryae

# publications[].label
Impact of area-wide malathion on predatory arthropods and secondary pests in cotton during boll weevil eradication in Texas

# publications[].label
Potential for transport of boll weevils (Coleoptera: Curculionidae) to the cotton gin within cotton modules.

# publications[].label
Evaluation of sampling methods and development of sample plans for estimating predator densities in cotton.

# publications[].label
Application of Pheromone Traps for Managing Hessian Fly (Diptera: Cecidomyiidae) in the Southern Great Plains.

# publications[].label
PREDATORS AND PARASITES OF THE SOUTHWESTERN CORN-BORER (LEPIDOPTERA, PYRALIDAE) IN TEXAS CORN

# publications[].label
Economic impact of pecan integrated pest management implementation in Texas

# publications[].label
Hessian Fly (Diptera: Cecidomyiidae) Biology and Management in Wheat

# publications[].label
Mating Disruption of Pecan Nut Casebearer, Acrobasis nuxvorella Neuzig1, in Pecans

# publications[].label
DISTRIBUTION AND SAMPLING OF SOUTHWESTERN CORN-BORER (LEPIDOPTERA, PYRALIDAE) IN PREHARVEST CORN

# publications[].label
Pecan nut casebearer pheromone monitoring and degree-day model validation across the pecan belt

# publications[].label
SEASONAL OCCURRENCE OF BEAUVERIA-BASSIANA IN THE SOUTHWESTERN CORN-BORER (LEPIDOPTERA, PYRALIDAE) IN THE TEXAS HIGH-PLAINS

# publications[].label
Virulence analysis of Hessian fly populations from Texas, Oklahoma, and Kansas.

# publications[].label
Economic Injury Level for Bermudagrass Stem Maggot (Diptera: Muscidae) in Bermudagrass Forage Production in Texas.

# publications[].label
Biological control of giant salvinia (Salvinia molesta) in a temperate region: cold tolerance and low temperature oviposition of Cyrtobagous salviniae

# publications[].label
Resistance to Seed Feeding by Southern Green Stink Bug, Nezara viridula (Linnaeus), in Soybean, Glycine max (L) Merrill

# publications[].label
Evaluating Pilose, a Cultigen of Gossypium hirsutum, as a Source of Resistance to Cotton Fleahopper (Hemiptera: Miridae).

# publications[].label
Early-season thrips (Thysanoptera:Thripidae) control and soybean yield in North Texas

# publications[].label
The beat bucket: A rapid, reliable method for sampling predatory insects and spiders in cotton

# publications[].label
Effect of red imported fire ant, Solenopsis invicta, on abundance of corn earworm, Helicoverpa zea, on maize in texas

# publications[].label
Salt Cedar Areawide Pest Management in the Western USA

# schools[]
College of Agriculture and Life Sciences

# inTheNews[].label
Researchers: Barley is ideal for cool-season cattle grazing

# etdChairOf[].label
Diaz Galarraga, Rodrigo Rogelio (2004-09). Impact of the red imported fire ant upon cotton arthropods. Master's Thesis.

# etdChairOf[].label
Mekala, Diwakar Karthik (2004-11). Screening upland cotton for resistance to cotton fleahopper (Heteroptera: Miridae). Master's Thesis.

# etdChairOf[].label
Hopkins, Bradley Wayne (2006-04). Species composition and seasonal abundance of stink bugs in cotton in the Lower Texas Gulf Coast and the virulence of Euschistus species to cotton. Master's Thesis.

# etdChairOf[].label
Butler, James Joseph (2004-11). Predicting boll weevil eradication induced pest outbreaks in Texas cotton. Master's Thesis.

# etdChairOf[].label
Hudgeons, Jeremy L. (2009-05). The establishment, biological success and host impact of Diorhabda elongata, imported biological control agents of invasive Tamarix in the United States. Master's Thesis.

# etdChairOf[].label
Tracy, James L. (2018-10). Random Subset Feature Selection for Ecological Niche Modeling of Wildfire Activity and the Monarch Butterfly. Doctoral Dissertation.