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Effects Of Micro-Rates Of 2,4-D And Dicamba On Lettuce And Pumpkin In Nebraska, Xinzheng Chen
Effects Of Micro-Rates Of 2,4-D And Dicamba On Lettuce And Pumpkin In Nebraska, Xinzheng Chen
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Off-target herbicide injury from dicamba and 2,4-D is an increasingly common problem for specialty crop growers in the Midwestern United States. Both lettuce (Lactuca sativa L.) and pumpkin (Cucurbita spp.) are common specialty crops grown in Nebraska, and their proximity to corn and soybean production makes these crops susceptible to herbicide drift injury and yield loss. The objectives of this thesis research was to quantify crop injury and yield loss in greenhouse- and field-grown lettuce and field-grown pumpkins at different growth stages after exposure to sub-lethal doses of dicamba or 2,4-D. Dose response curves were generated to determine effective dose …
Herbicide Injury From Dicamba And 2,4-D: How Much Is Too Much In Lettuce?, Xinzheng Chen, Amit J. Jhala, Stevan Z. Knezevic, Samuel E. Wortman
Herbicide Injury From Dicamba And 2,4-D: How Much Is Too Much In Lettuce?, Xinzheng Chen, Amit J. Jhala, Stevan Z. Knezevic, Samuel E. Wortman
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Off-target herbicide injury from dicamba and 2,4-D is an increasingly common problem for specialty crop growers in the Midwest U.S. Lettuce (Lactuca sativa L.) is a common specialty crops grown in Nebraska, but proximity to corn and soybean production leaves growers vulnerable to crop injury and significant economic loss. The goal of this study was to quantify crop injury and yield loss in greenhouse grown lettuce after exposure to simulated sub-lethal drift rates of 2,4-D and dicamba. Sublethal doses were determined based on a percentage of the maximum labeled rate and ranged from 25% to 0.01%. Tested lettuce cultivars …
Understanding The Biology, Inheritance And Mechanism Of Resistance Of 2,4-D Resistant Waterhemp (Amaranthus Tuberculatus) - Research Proposal, Roberto Crespo
Understanding The Biology, Inheritance And Mechanism Of Resistance Of 2,4-D Resistant Waterhemp (Amaranthus Tuberculatus) - Research Proposal, Roberto Crespo
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Waterhemp is a very well adapted summer annual weed to the U.S. Corn Belt region. Auxinic herbicides such as 2,4-D constitute effective and widely used herbicides to control waterhemp and other broadleaf species in cereal crops and turf grasses. Recently, Bernards et al. (2012) have reported a Nebraska waterhemp biotype has evolved resistant to 2,4-D. This finding represents the sixth mode-of action herbicide group to which waterhemp has evolved resistance to. Several attributes may have contributed to make waterhemp a very successful weed and prone to evolve to herbicide resistant: a high genetic variability, aggressive growth habits and high fecundity. …
Nf98-363 Chemical Weed Control In Tree Planting Projects: Part Ii - Post-Emergence Herbicides, John Duplissis
Nf98-363 Chemical Weed Control In Tree Planting Projects: Part Ii - Post-Emergence Herbicides, John Duplissis
University of Nebraska-Lincoln Extension: Historical Materials
This NebFact examines weed control in tree planting projects.
G88-863 Annual Broadleaf Weed Control In Winter Wheat (Revised January 1990), Gail A. Wicks, Robert N. Klein, Alex Martin
G88-863 Annual Broadleaf Weed Control In Winter Wheat (Revised January 1990), Gail A. Wicks, Robert N. Klein, Alex Martin
University of Nebraska-Lincoln Extension: Historical Materials
This NebGuide discusses preventive, cultural, and chemical weed control in winter wheat. Best weed control is obtained by using a combination of these three methods. Winter and summer annual broadleaf weeds are economically important pests of Nebraska winter wheat. They reduce grain yields by competing with winter wheat for water, light and nutrients. Weeds are estimated to reduce Nebraska winter wheat yields 10 percent each year.
G86-802 Banvel And 2,4-D Damge To Fieldbeans And Soybeans, Roger G. Wilson, Drew J. Lyon
G86-802 Banvel And 2,4-D Damge To Fieldbeans And Soybeans, Roger G. Wilson, Drew J. Lyon
University of Nebraska-Lincoln Extension: Historical Materials
This NebGuide discusses the effects of Banvel and 2,4-D on soybean and fieldbean growth and yield. Banvel and 2,4-D are two herbicides commonly used for postemergence control of broadleaf weeds in corn, wheat, sorghum, pastures, and around field margins. Both herbicides can be moved off target by windy conditions at the time of spraying, or they can volatilize after spraying at temperatures above 85°F and drift off target. Fieldbeans and soybeans are both sensitive to Banvel and 2,4-D, and even rates as low as 0.001 lb/acre (1/100th of the use rate) can cause visual crop injury. The degree of crop …
The Effect Of 2,4-D, Grazing Management And Nitrogen Fertilizer On Pasture Production, M. K. Mccarty, M. L. Cox, D. L. Linscott
The Effect Of 2,4-D, Grazing Management And Nitrogen Fertilizer On Pasture Production, M. K. Mccarty, M. L. Cox, D. L. Linscott
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
Many pastures in eastern Nebraska and surrounding areas have gradually decreased in productivity. Over a long period of heavy grazing, native warm-season grasses have been largely replaced with Kentucky bluegrass, other less desirable grasses, and broadleaf weeds. A program was started in 1949 to study the effectiveness of protection from grazing in changing the botanical composition and yield of a pasture where the predominant forage was Kentucky bluegrass. Several weed control treatments were included in this experiment to determine if mowing or spraying would hasten the return of more desirable forage. After weed control and differential grazing treatments had been …
Differential Plant Injury And Yield Responses Of Tomato Varieties To 2,4-D, D. P. Coyne, O. C. Burnside
Differential Plant Injury And Yield Responses Of Tomato Varieties To 2,4-D, D. P. Coyne, O. C. Burnside
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
Experiments reported in this bulletin were conducted to determine the extent of plant injury and yield loss due to high and low rates of 2,4-D sprays on a wide range of home garden and processing tomato varieties. Results of this study could be used as a basis for suggesting tomato varieties suitable for growing in areas where 2,4-D drift is a common problem. An experiment was also conducted to determine if there was resistance to or good recovery from 2,4-D injury in other tomato species and in a wide collection of tomato plant introductions.
False Smut Of Buffalograss, John L. Weihing
False Smut Of Buffalograss, John L. Weihing
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
False smut of buffalograss, Buchloe dactyloides (Nutt.) Engelm., caused by Cercospora seminalis Ell. & Ev. is a disease that destroys the unfertilized ovary. The disease was first reported by J. B. Ellis and B. M. Everhart in 1888. They gave only a brief description of the disease and named the causal fungus Cercospora seminalis. There are no etiological studies of false smut recorded in the literature. The origin of the term "false smut" is unknown to the author, but it so descriptively fits the general appearances of the disease that one readily understands its usage. The following studies were …