Ramon Gonzalo Leon Gonzalez

A survey of weed research priorities: key findings and future directions

Weed Science.

Brassica carinata nutrient accumulation and partitioning across maturity types and latitude

Bashyal, M., Mulvaney, M. J., Crozier, C. R., Iboyi, J. E., Perondi, D., Post, A., … Devkota, P. (2023, February 15). CROP SCIENCE, Vol. 2.

Brassica carinata physiological response to land preparation method and seeding rate

Iboyi, J. E., Mulvaney, M. J., Leon, R. G., Balkcom, K. S., Bashyal, M., Perondi, D., … Small, I. M. (2023, January 12). JOURNAL OF CROP IMPROVEMENT, Vol. 1.

Changes in the herbicide sensitivity and competitive ability of Abutilon theophrasti over 28 years: Implications for hormesis and weed evolution

Ethridge, S. R. R., Chandra, S., Locke, A. M. M., Everman, W. J. J., Jordan, D. L. L., Owen, M. D. K., & Leon, R. G. G. (2023, June 29). PEST MANAGEMENT SCIENCE, Vol. 6.

Confirmation and detection of novel acetolactate synthase- and protoporphyrinogen oxidase–inhibiting herbicide-resistant redroot pigweed (Amaranthus retroflexus) populations in North Carolina

Weed Science.

Confirmation of a five-way herbicide-resistant Amaranthus tuberculatus population in North Carolina

Jones, E. A. L., Andres, R. J., Owen, M. D. K., Dunne, J. C., Contreras, D. J., Cahoon, C. W., … Everman, W. J. (2023, July 22). WEED RESEARCH, Vol. 7.

Confusion and ambiguity concerning the terms "resistance" and "tolerance" in aquatic plant management

Thum, R. A., Sperry, B. P., Chorak, G. M., Leon, R. G., & Ferrell, J. (2023, May 18). WEED SCIENCE, Vol. 5.

Discrimination between protoporphyrinogen oxidase-inhibiting herbicide-resistant and herbicide-susceptible redroot pigweed (Amaranthus retroflexus) with spectral reflectance

Jones, E. A. L., Austin, R., Dunne, J. C., Leon, R. G., & Everman, W. J. (2023, May 2). WEED SCIENCE, Vol. 5.

Double-cropping effects of Brassica carinata and summer crops: I. Effects of summer cropping history on carinata production

INDUSTRIAL CROPS AND PRODUCTS, 194.

Double-cropping effects of Brassica carinata and summer crops: II. Effects of winter cropping history on subsequent summer crop production

INDUSTRIAL CROPS AND PRODUCTS, 197.

Evaluation of electrical and mechanical Palmer amaranth (Amaranthus palmeri) management in cucumber, peanut, and sweetpotato

Moore, L. D. D., Jennings, K. M. M., Monks, D. W. W., Boyette, M. D. D., Leon, R. G. G., Jordan, D. L. L., … Chang, P. (2023, January 22). WEED TECHNOLOGY, Vol. 1.

Influence of burial depth and soil disturbance on the emergence of common weed species in the Iberian Peninsula

Sousa-Ortega, C., Leon, R. G., Lopez-Martinez, N., & Castro-Valdecantos, P. (2023, May 29). WEED SCIENCE, Vol. 5.

Low carrier volume herbicide trials and UAAS support management efforts of giant salvinia (Salvinia molesta): a case study

Howell, A. W., Haug, E. J., Everman, W. J., Leon, R. G., & Richardson, R. J. (2023, May 18). INVASIVE PLANT SCIENCE AND MANAGEMENT, Vol. 5.

PROTAC for agriculture: learning from human medicine to generate new biotechnological weed control solutions

Pest Management Science.

Performance of unoccupied aerial application systems for aquatic weed management: Two novel case studies

Howell, A. W., Leon, R. G., Everman, W. J., Mitasova, H., Nelson, S. A. C., & Richardson, R. J. (2023, May 22). WEED TECHNOLOGY, Vol. 5.

Previous crop and herbicide timing application effects on weed population growth rate

Crop, Forage & Turfgrass Management.

Rapid evolution of competitive ability in giant foxtail (Setaria faberi) over 34 years

WEED SCIENCE, 71(1), 59–68.

Subsurface Lateral Solute Transport in Turfgrass

AGRONOMY-BASEL, 13(3).

Summer crop rotational effects on carinata nitrogen management in the southeastern USA

Bashyal, M., Mulvaney, M. J., Devkota, P., Wilson, C., Iboyi, J. E., Leon, R. G., … Boote, K. J. (2023, June 12). AGRONOMY JOURNAL, Vol. 6.

Views of RNAi approaches for weed management in turfgrass systems

Ethridge, S. R., Grieger, K., Locke, A. M., Everman, W. J., Jordan, D. L., & Leon, R. G. (2023, July 10). WEED SCIENCE, Vol. 7.

Assessing weediness potential of Brassica carinata (A.) Braun in the southeastern United States

INDUSTRIAL CROPS AND PRODUCTS, 188.

Biological effects on Palmer amaranth surviving glufosinate

AGROSYSTEMS GEOSCIENCES & ENVIRONMENT, 5(4).

Control of pervasive row crop weeds with dicamba and glufosinate applied alone, mixed, or sequentially

Jones, E. A. L., Leon, R. G., & Everman, W. J. (2022, October 24). WEED TECHNOLOGY, Vol. 10.

Critical period of grass weed control in ALS-tolerant grain sorghum (Sorghum bicolor) is affected by planting date and environment

FRONTIERS IN AGRONOMY, 4.

Crop physiological considerations for combining variable-density planting to optimize seed costs and weed suppression

Ethridge, S. R. R., Locke, A. M. M., Everman, W. J. J., Jordan, D. L. L., & Leon, R. G. G. (2022, November 11). WEED SCIENCE, Vol. 11.

Effect of cotton herbicide programs on weed population trajectories and frequency of glyphosate-resistant Palmer amaranth (Amaranthus palmeri)

Oreja, F. H., Inman, M. D., Jordan, D. L., Vann, M., Jennings, K. M., & Leon, R. G. (2022, July 29). WEED SCIENCE, Vol. 7.

Eradication of Commelina benghalensis in a long-term experiment using a multistakeholder governance model: a case of regulatory concerns defeating ecological management success

INVASIVE PLANT SCIENCE AND MANAGEMENT, 15(3), 152–159.

Evaluation of imazapic and flumioxazin carryover risk for Carinata (Brassica carinata) establishment

Camacho, M. E., Gannon, T. W., Ahmed, K. A., Mulvaney, M. J., Heitman, J. L., Amoozegar, A., & Leon, R. G. (2022, May 11). WEED SCIENCE, Vol. 5.

Genome-Wide Evolutionary Analysis of Putative Non-Specific Herbicide Resistance Genes and Compilation of Core Promoters between Monocots and Dicots

GENES, 13(7).

In-field assessment of EPSPS amplification on fitness cost in mixed glyphosate-resistant and glyphosate-sensitive populations of Palmer amaranth (Amaranthus palmeri)

Cahoon, C. W., Jordan, D. L., Tranel, P. J., York, A. C., Riggins, C., Seagroves, R., … Leon, R. (2022, October 24). WEED SCIENCE, Vol. 10.

Modeling weed community diversity based on species population density dynamics and herbicide use intensity

EUROPEAN JOURNAL OF AGRONOMY, 138.

New directions in weed management and research using 3D imaging

Dobbs, A. M., Ginn, D., Skovsen, S. K., Bagavathiannan, M. V., Mirsky, S. B., Reberg-Horton, C. S., & Leon, R. G. (2022, October 14). WEED SCIENCE, Vol. 10.

Poultry litter and nitrogen fertilizer effects on productivity and nutritive value of crabgrass

Sosinski, S., Castillo, M. S., Kulesza, S., & Leon, R. (2022, September 7). CROP SCIENCE, Vol. 9.

Response of Maize, Cotton, and Soybean to Increased Crop Density in Heterogeneous Planting Arrangements

AGRONOMY-BASEL, 12(5).

Surveying stakeholder's perception of glufosinate and use in North Carolina

Jones, E. A. L., Cahoon, C. W., Leon, R. G., & Everman, W. J. (2022, May 16). WEED TECHNOLOGY, Vol. 5.

Use of synthetic images for training a deep learning model for weed detection and biomass estimation in cotton

SCIENTIFIC REPORTS, 12(1).

Using weed emergence and phenology models to determine critical control windows for winter-grown carinata (Brassica carinata)

Reinhardt Piskackova, T. A., & Leon, R. G. (2022, June 3). WEED SCIENCE, Vol. 6.

Utilization of image-based spectral reflectance to detect herbicide resistance in glufosinate-resistant and glufosinate-susceptible plants: a proof of concept

Jones, E. A. L., Austin, R., Dunne, J. C., Cahoon, C. W., Jennings, K. M., Leon, R. G., & Everman, W. J. (2022, December 19). WEED SCIENCE, Vol. 12.

A granular fertilizer carrier impregnated with metsulfuron injures centipedegrass when applied at excessive rates

CROP FORAGE & TURFGRASS MANAGEMENT, 7(1).

A population genetics approach for the study of fluridone resistance in hydrilla

AQUATIC INVASIONS, 16(1), 28–42.

Amaranthus palmeri a New Invasive Weed in Spain with Herbicide Resistant Biotypes (vol 10, 993, 2020)

Torra, J., Royo-Esnal, A., Romano, Y., Osuna, M. D., Leon, R. G., & Recasens, J. (2021, July). AGRONOMY-BASEL, Vol. 11.

Biochar affects soil water content but not soybean yield in a sandy southeastern US soil

AGROSYSTEMS GEOSCIENCES & ENVIRONMENT, 4(3).

Brassica carinata biomass, yield, and seed chemical composition response to nitrogen rates and timing on southern Coastal Plain soils in the United States

Bashyal, M., Mulvaney, M. J., Lee, D., Wilson, C., Iboyi, J. E., Leon, R. G., … Boote, K. J. (2021, June 4). GLOBAL CHANGE BIOLOGY BIOENERGY, Vol. 6.

Characterization of carinata tolerance to select herbicides using field dose-response studies

WEED TECHNOLOGY, 35(6), 957–966.

Cover Image

Weed Research, 61(3).

Emergence patterns of winter and summer annual weeds in Ethiopian mustard (Brassica carinata) cropping system

WEED SCIENCE, 69(4), 446–453.

Evaluating shade cloth to simulate Palmer amaranth (Amaranthus palmeri) competition in sweetpotato

WEED SCIENCE, 69(4), 478–484.

Growing winter Brassica carinata as part of a diversified crop rotation for integrated weed management

GCB Bioenergy.

Herbicide systems including linuron for Palmer amaranth (Amaranthus palmeri) control in sweetpotato

WEED TECHNOLOGY, 35(1), 49–56.

Influence of herbicides on germination and quality of Palmer amaranth (Amaranthus palmeri) seed

WEED TECHNOLOGY, 35(5), 786–789.

Nitrogen leaching and Tifway bermudagrass response to simultaneous nutrient and pre-emergence herbicide applications

Maia, L. O. R., Shaddox, T. W., Leon, R. G., & Unruh, J. B. (2021, November 23). JOURNAL OF ENVIRONMENTAL QUALITY, Vol. 11.

Palmer Amaranth (Amaranthus palmeri) Growth and Seed Production When in Competition with Peanut and Other Crops in North Carolina

AGRONOMY-BASEL, 11(9).

Population and quantitative genetic analyses of life-history trait adaptations in Amaranthus palmeri S. Watson

Leon, R. G., & Laat, R. (2021, July 13). WEED RESEARCH, Vol. 7.

Population growth rates of weed species in response to herbicide programme intensity and their impact on weed community

Oreja, F. H., Inman, M. D., Jordan, D. L., & Leon, R. G. (2021, September 19). WEED RESEARCH, Vol. 9.

Safety and efficacy of linuron with or without an adjuvant or S-metolachlor for POST control of Palmer amaranth (Amaranthus palmeri) in sweetpotato

WEED TECHNOLOGY, 35(3), 471–475.

Seed germination responses to soil hydraulic conductivity and polyethylene glycol (PEG) osmotic solutions

PLANT AND SOIL, 462(1-2), 175–188.

Susceptibility of Palmer amaranth accessions in North Carolina to atrazine, dicamba, S-metolachlor, and 2,4-D

Moore, L. D., Jennings, K. M., Monks, D. W., Jordan, D. L., Boyette, M. D., Leon, R. G., … Cahoon, C. W. (2021, November 24). CROP FORAGE & TURFGRASS MANAGEMENT, Vol. 11.

The Impacts of Micronutrient Fertility on the Mineral Uptake and Growth of Brassica carinata

AGRICULTURE-BASEL, 11(3), 221.

The influence of soybean population and POST herbicide application timing on in-season and subsequent-season Palmer amaranth (Amaranthus palmeri) control and economic returns

WEED TECHNOLOGY, 35(1), 106–112.

The role of population and quantitative genetics and modern sequencing technologies to understand evolved herbicide resistance and weed fitness

Pest Management Science.

Tillage system and seeding rate effects on the performance of Brassica carinata

GLOBAL CHANGE BIOLOGY BIOENERGY, 13(4), 600–617.

Tolerance of rhizoma perennial peanut to glyphosate and triclopyr

WEED TECHNOLOGY, 35(4), 525–531.

Windows of action for controlling palmer amaranth (Amaranthus palmeri) using emergence and phenology models

WEED RESEARCH, 61(3), 188–198.

Amaranthus palmeri a New Invasive Weed in Spain with Herbicide Resistant Biotypes

Agronomy, 10(7), 993.

Bahiagrass pasture and elephantgrass bioenergy cropping systems differ in root traits

AGRONOMY JOURNAL, 112(6), 4810–4821.

Brassica carinata genotypes demonstrate potential as a winter biofuel crop in South East United States

Industrial Crops and Products, 150, 112353.

Cotton response to preplant applications of 2,4-D or dicamba

WEED TECHNOLOGY, 34(1), 96–100.

Coverage and drift potential associated with nozzle and speed selection for herbicide applications using an unmanned aerial sprayer

Weed Technology, 34(2), 235–240.

Creating Predictive Weed Emergence Models Using Repeat Photography and Image Analysis

Plants, 9(5), 635.

Current outlook and future research needs for harvest weed seed control in North American cropping systems

Pest Management Science.

Incorporating environmental factors to describe wild radish (Raphanus raphanistrum) seedling emergence and plant phenology

WEED SCIENCE, 68(6), 627–638.

Influence of timing and intensity of weed management on crop yield and contribution to weed emergence in cotton the following year

CROP FORAGE & TURFGRASS MANAGEMENT, 6(1).

Integrating emergence and phenology models to determine windows of action for weed control: A case study using Senna obtusifolia

FIELD CROPS RESEARCH, 258.

Integration of remote‐weed mapping and an autonomous spraying unmanned aerial vehicle for site‐specific weed management

Pest Management Science.

Peanut nitrogen credits to winter wheat are negligible under conservation tillage management in the southeastern USA

FIELD CROPS RESEARCH, 249.

Response of agronomic crops to planting date and double-cropping with wheat

AGRONOMY JOURNAL, 112(3), 1972–1980.

Short-term effects of bioenergy cropping on soil carbon and nitrogen dynamics in a Florida Ultisol

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 84(4), 1233–1246.

Simulation Models on the Ecology and Management of Arable Weeds: Structure, Quantitative Insights, and Applications

Agronomy, 10(10), 1611.

Susceptibility of Palmer amaranth (Amaranthus palmeri) to herbicides in accessions collected from the North Carolina Coastal Plain

WEED SCIENCE, 68(6), 582–593.

Tolerance of pintoi peanut to PRE and POST herbicides

WEED TECHNOLOGY, 34(6), 870–875.

Weed Management Guide for Florida Lawns

EDIS.

Amending marginal sandy soils with biochar and lignocellulosic fermentation residual sustains fertility in elephantgrass bioenergy cropping systems

NUTRIENT CYCLING IN AGROECOSYSTEMS, 115(1), 69–83.

Application Timing Affects Tolerance of Zoysiagrass to Fluazifop-P-butyl and Safening Effect of Triclopyr

CROP SCIENCE, 59(4), 1789–1798.

Brassica carinata Seeding Rate and Row Spacing Effects on Morphology, Yield, and Oil

AGRONOMY JOURNAL, 111(2), 528–535.

Influence of multiple herbicide resistance on growth in Amaranthus tuberculatus

WEED RESEARCH, 59(3), 235–244.

Peanut residue distribution gradients and tillage practices determine patterns of nitrogen mineralization

Nutrient Cycling in Agroecosystems, 113(1), 63–76.

Sustainable Weed Management in Peanut.

In N. E. Korres, N. R. Burgos, & S. O. Duke (Eds.), Weed control: Sustainability, hazards and cropping systems worldwide (1st ed., pp. 345–366). CRC Press/Taylor & Francis Group.

Transgressive segregation and maternal genetic effects of non–target site fluazifop-P-butyl tolerance in Zoysia spp.

Weed Science, 67(05), 504–509.

Variation in tolerance mechanisms to fluazifop-P-butyl among selected zoysiagrass lines

WEED SCIENCE, 67(3), 288–295.

Weed Management in Sugarcane

In N. E. Korres, N. R. Burgos, & S. O. Duke (Eds.), Weed control: Sustainability, hazards and cropping systems worldwide (1st ed., pp. 455–469). CRC Press/Taylor & Francis Group.

Conventional harvest index methods may overestimate biomass and nutrient removal from abscising crop species

Communications in Soil Science and Plant Analysis, 49(22), 2889–2893.

Evaluation of verticutting and herbicides for tropical signalgrass (Urochloa subquadripara) control in turf

Weed Technology, 32(04), 392–397.

Evolutionary Adaptations of Palmer Amaranth (Amaranthus palmeri) to Nitrogen Fertilization and Crop Rotation History Affect Morphology and Nutrient-Use Efficiency

WEED SCIENCE, 66(2), 180–189.

Extractable and Germinable Seedbank Methods Provide Different Quantifications of Weed Communities

Weed Science, 66(6), 715–720.

Frost Damage of Carinata Grown in the Southeastern US

EDIS, 2018(3).

Herbicidal and Seed Dormancy Induction Activity of Fermentation Residual Vinasse

WEED SCIENCE, 66(3), 317–323.

Managing herbicide resistance: Listening to the perspective of practitioners. Procedures for conducting listening sessions and an evaluation of the process

Weed Technology, 32(04), 489–497.

Managing wicked herbicide-resistance: Lessons from the field

Weed Technology, 32(04), 475–488.

Recurrent Changes of Weed Seed Bank Density and Diversity in Crop-Livestock Systems

AGRONOMY JOURNAL, 110(3), 1068–1078.

Biochar changes root growth and root distribution of soybean during early vegetative stages

Crop Science, 57(1), 454–461.

Carinata (Brassica carinata) tolerance to preemergence and postemergence herbicides

Weed Technology, 31(06), 877–882.

Converting bahiagrass pasture land to elephantgrass bioenergy production enhances biomass yield and water quality

Agriculture Ecosystems and Environment, 248, 20–28.

Differences in biomass and water dynamics between a cotton-peanut rotation and a sweet sorghum bioenergy crop with and without biochar and vinasse as soil amendments

FIELD CROPS RESEARCH, 214, 123–130.

Differentiation of Life-History Traits among Palmer Amaranth Populations (Amaranthus palmeri) and Its Relation to Cropping Systems and Glyphosate Sensitivity

WEED SCIENCE, 65(3), 339–349.

Diversity and spatial heterogeneity of weed communities in a sugarcane cropping system in the dry tropics of Costa Rica

Weed Science, 65(01), 128–140.

Effect of sequential applications of protoporphyrinogen oxidase (PPO) inhibiting herbicides on Palmer amaranth (Amaranthus palmeri) in peanut (Arachis hypogaea)

Weed Technology, 31(01), 46–52.

Efficacy of aquatic herbicides on rotala (Rotala rotundifolia)

Journal of Aquatic Plant Management, 55, 13–18.

Impact of potassium and nitrogen fertilization on bahiagrass herbage accumulation and nutrient concentration

Agronomy Journal, 109(3), 1099–1105.