UGA College of Agricultural & Environmental Sciences Field Report
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  • Expert Resources

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    Gardening
    Invasive species
    Food and food safety
    Ants, termites and other pests
    Pollinators
    Livestock
    Emergency preparedness
    Home safety and maintenance
    Health, family and finances
    Nutrition
    Water quality
    Lawn maintenance and landscaping
    Turfgrass
    View all topics

    What is an Expert Resource?


    We publish unbiased, research-backed expert advice to empower Georgians with practical, trustworthy information they can trust.

    These resources are written and reviewed by experts in the UGA College of Agricultural and Environmental Sciences and the UGA College of Family and Consumer Sciences.

    Learn how we produce science you can trust
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  4. Field Crops, Forage and Turfgrass Production

Field Crops, Forage and Turfgrass Production

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  • B 1231

    Reducing Aflatoxin in Corn During Harvest and Storage

    Aflatoxin is a naturally occurring toxin produced by the fungus Aspergillus flavus. The fungus can be recognized by a gray-green or yellow-green mold growing on corn kernels in the field or in storage. Plant stress due to drought, heat or insect damage during fungus growth usually increases aflatoxin levels. Aflatoxin contamination will reduce feeding value and hinder sales. Because it is extremely poisonous to warm-blooded animals even at relatively low levels, grain handling facilities often check for the presence of the toxin before purchasing corn.

    John Worley

    |

    June 11, 2024
  • B 1395-SP

    Identificación y Control de Lespedeza en Céspedes

    La lespedeza común (Kummerowia striata (Thunb.) Schind syn. Lespedeza striata) es una leguminosa anual de verano sin organización en sus ramificaciones, que es una maleza problemática en céspedes de jardines residenciales así como en otras áreas de césped.

    [Common lespedeza (Kummerowia striata (Thunb.) Schind syn. Lespedeza striata) is a freely branched, summer annual legume that is a problematic weed in lawns and other turf areas. This publication describes ways to identify and control Lespedeza in turfgrass, including cultural control methods, preemergence herbicides and postemergence herbicides.]

    Patrick McCullough

    |

    June 11, 2024
  • C 1297

    Soil Sampling Grid Size Considerations for Site-Specific Nutrient Management

    This publication provides information on selecting an optimal soil sampling grid size that can accurately depict spatial nutrient variability within the fields in the southeastern US and helps in informing precision site-specific nutrient applications.

    Jason Lessl, Simerjeet Virk, and Glendon Harris

    |

    May 14, 2024
  • C 1281

    Cotton Defoliation in Georgia

    Cotton defoliation is a complex production decision with many chemical options to consider. Harvest aids are utilized to prepare the crop for machine harvest, and timely defoliation and harvest of cotton can reduce weathering losses (yield and quality) and decrease trash in the lint. A basic knowledge of crop development and maturity as well as an understanding of the physiological effects of harvest aids on cotton plants is necessary in making decisions concerning defoliation.

    John Snider and Lavesta Hand

    |

    April 23, 2024
  • B 712

    Aerating Grain in Storage

    Aeration conditions grain and seed by lowering the temperature of the material and equalizing the temperature within the storage structure. This prevents moisture migration and condensation and can reduce losses during storage.

    John Worley

    |

    April 9, 2024
  • B 1216

    Pearl Millet for Grain

    Pearl millet (Pennisetum glaucum [L.] R. Br.) has a long history of use as a summer grazing and hay crop in the southeastern U.S. The recent development of new, adaptable and productive grain pearl millet hybrids in the Southeast gives crop producers a suitable alternative feed grain for dryland production.

    G. Buntin

    |

    April 9, 2024
  • B 1464

    Foxtail Identification and Control in Georgia Pastures and Hayfields

    Foxtails (Setaria spp.) are invasive weeds in pastures and hayfields. The competitive growth of foxtails with pasture specie causes stand thinning and reductions in hay yields. Foxtails may be grazed in spring prior to inflorescence development. However, the production of seedheads is concerning in summer due to the sharp awns that can damage the gums of livestock. Hayfield growers are also concerned about the economic impact of foxtails on yield and hay quality. This publication discusses the identification of foxtail species along with cultural and chemical control options.

    Patrick McCullough

    |

    April 9, 2024
  • C 1078

    Annual Ryegrass Control in Georgia Hayfields

    Annual ryegrass (Lolium multiflorum), also referred to as Italian ryegrass, is the most problematic winter annual weed in Georgia hayfields. Seed germinates from September to November when soil temperatures drop below 70 degrees F. Seedlings mature in the fall, overwinter in a vegetative state, and resume active growth in the spring. Annual ryegrass is a prolific seed producer that contributes to annual infestations.

    This publication summarizes the growth and identification of this weed. Cultural and chemical control options are also presented for tall fescue, bermudagrass, alfalfa, bahiagrass and other forage legumes grown for hay production.

    Patrick McCullough

    |

    April 4, 2024
  • B 1463

    Annual Bluegrass Control Programs for Georgia Lawns

    Annual bluegrass (Poa annua) is the most problematic winter weed of lawns in Georgia. Plants have a light green color, coarse leaf texture, and produce unsightly seedheads. Annual bluegrass germinates in fall, overwinters in a vegetative state, and resumes active growth in spring. Competitive growth of populations causes stand thinning of desirable turfgrasses that may predispose lawns to invasion by summer annual weeds, such as crabgrass (Digitaria spp.). Annual bluegrass typically dies out by May in Georgia, but cool temperatures in spring and regular irrigation may extend survival of populations into early summer.

    Annual bluegrass is the most problematic winter weed of lawns in Georgia. Turf managers have experienced difficulty controlling annual bluegrass due to the spread of biotypes with resistance to pre- and post-emergence herbicides. This publication covers annual bluegrass identification, establishment, and cultural control for lawns. The development, detection, and control of herbicide-resistant annual bluegrass is also discussed.

    Patrick McCullough

    |

    April 4, 2024
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