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- Wind stress (3)
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Articles 1 - 19 of 19
Full-Text Articles in Life Sciences
Windbreaks In North American Agricultural Systems, James R. Brandle, Laurie Hodges, Xinhua H. Zhou
Windbreaks In North American Agricultural Systems, James R. Brandle, Laurie Hodges, Xinhua H. Zhou
Laurie Hodges
Windbreaks are a major component of successful agricultural systems throughout the world. The focus of this chapter is on temperate-zone, commercial, agricultural systems in North America, where windbreaks contribute to both producer profitability and environmental quality by increasing crop production while simultaneously reducing the level of off-farm inputs. They help control erosion and blowing snow, improve animal health and survival under winter conditions, reduce energy consumption of the farmstead unit, and enhance habitat diversity, providing refuges for predatory birds and insects. On a larger landscape scale windbreaks provide habitat for various types of wildlife and have the potential to contribute …
Effects Of Antitranspirant And Polyacrylamide Gel On Early Growth Of Muskmelon (Cucumis Melo L Cv. Hiline) [Abstract], Entin Daningsih, Laurie Hodges, James R. Brandle
Effects Of Antitranspirant And Polyacrylamide Gel On Early Growth Of Muskmelon (Cucumis Melo L Cv. Hiline) [Abstract], Entin Daningsih, Laurie Hodges, James R. Brandle
Laurie Hodges
Field experiments were conducted in 1991, 1992, and 1993 to evaluate the effects of antitranspirant (Folicote, Aquatrol Inc.) and polyacrylamide gel (Supersorb, Aquatrol Inc.) on early growth of muskmelon.
Wind Protection And Planting Date Affect Snapbean Growth And Yield [Abstract], Mohammed Nazip Suratman, Laurie Hodges, James R. Brandle, Kenneth G. Hubbard
Wind Protection And Planting Date Affect Snapbean Growth And Yield [Abstract], Mohammed Nazip Suratman, Laurie Hodges, James R. Brandle, Kenneth G. Hubbard
Laurie Hodges
The effects of windbreak shelter on growth, total, and marketable yield of snapbeans were evaluated during 1994 and 1995.
Comparison Of An Antitranspirant Spray, A Polyacrylamide Gel, And Wind Protection On Early Growth Of Muskmelon, Laurie Hodges, Entin Daningsih, James R. Brandle
Comparison Of An Antitranspirant Spray, A Polyacrylamide Gel, And Wind Protection On Early Growth Of Muskmelon, Laurie Hodges, Entin Daningsih, James R. Brandle
Laurie Hodges
Field experiments were conducted over 4 years to evaluate the effects of antitranspirant (Folicote, Aquatrol Inc., Paulsboro, N.J.) and polyacrylamide gel (SuperSorb, Aquatrol Inc., Paulsboro, N.J.) on early growth of transplanted muskmelon grown either protected by tree windbreaks or exposed to seasonal winds. A randomized complete block design (RCBD) with split plot arrangement was used with wind protection (sheltered and exposed) areas as the main treatment and use of an antitranspirant spray or gel dip as subtreatments. Based on destructive harvests in the field, treatments and subtreatments did not affect dry weight or leaf area index in the first 2 …
Performance Of Green And Blanched Asparagus Cultivars In Nebraska [Abstract], Laurie Hodges, Roger Uhlinger, Ernesto Brovelli, Susan Cuppett, Anne Parkhurst
Performance Of Green And Blanched Asparagus Cultivars In Nebraska [Abstract], Laurie Hodges, Roger Uhlinger, Ernesto Brovelli, Susan Cuppett, Anne Parkhurst
Laurie Hodges
Fourteen asparagus cultivars were established in 1988 in eastern Nebraska on a heavy silty clay soil to determine suitability for Nebraska production.
Adaptability And Reliability Of Yield For Four Bell Pepper Cultivars Across Three Southeastern States, Laurie Hodges, Douglas C. Sanders, Katharine B. Perry, Kent M. Eskridge, K. M. (Dean) Batal, Darbie M. Granberry, Wayne J. Mclaurin, Dennis Decoteau, Robert J. Dufault, J. Thomas Garrett, Russell Nagata
Adaptability And Reliability Of Yield For Four Bell Pepper Cultivars Across Three Southeastern States, Laurie Hodges, Douglas C. Sanders, Katharine B. Perry, Kent M. Eskridge, K. M. (Dean) Batal, Darbie M. Granberry, Wayne J. Mclaurin, Dennis Decoteau, Robert J. Dufault, J. Thomas Garrett, Russell Nagata
Laurie Hodges
Four bell pepper (Capsicum annuum L.) cultivars were evaluated for yield (total weight of marketable fruit) performance over 41 environments as combinations of 3 years, three planting dates, and seven locations across North Carolina, South Carolina, and Georgia. Cultural practices, including trickle irrigation and double rows planted on black plastic-covered beds, were uniform across all environments, except for fertilization, which was adjusted at each location based on soil tests. Comparing production over 3 years between the mountain location and the Coastal Plain location in North Carolina, yields were lower on the Coastal Plain. Spring plantings provided higher yields than summer …
The Response Of Muskmelon Growth And Development To Microclimate Modification By Shelterbelts, Dongsheng Zheng, James R. Brandle, Laurie Hodges, Entin Daningsih, Kenneth G. Hubbard
The Response Of Muskmelon Growth And Development To Microclimate Modification By Shelterbelts, Dongsheng Zheng, James R. Brandle, Laurie Hodges, Entin Daningsih, Kenneth G. Hubbard
Laurie Hodges
The relationships between shelterbelt (tree windbreak)-induced microclimate and muskmelon (Cucumis melo L.) growth and development were investigated at the Univ. of Nebraska-Lincoln Agricultural Research and Development Center near Mead, Nebr., during the 1992 and 1993 growing seasons. Wind speed, wind direction, air and soil temperatures, relative humidity, and soil moisture were monitored in both sheltered and nonsheltered areas. Plant growth parameters (plant height, vine length, plant dry weight, and leaf area) were measured at various stages of development. Shelterbelts provided improved growing conditions for muskmelon transplants. Direct wind damage and duration of higher wind speeds were reduced 47% to 56% …
Adsorption Of The Herbicides Diuron, Terbacil, And Simazine To Blueberry Mulches, Laurie Hodges, Ronald E. Talbert
Adsorption Of The Herbicides Diuron, Terbacil, And Simazine To Blueberry Mulches, Laurie Hodges, Ronald E. Talbert
Laurie Hodges
Samples of soil, mulch, and the soil/mulch interface zone were collected from commercial highbush blueberry (Vaccinium corymbosum L.) fields typical in their use of mulch under Arkansas conditions. Mulches included J-year-old hardwood sawdust, 5-year-old hardwood sawdust, and 1-year-old pine needle mulch. Herbicide adsorption (Kd values) of the samples was determined for diuron, terbacil, and simazine. The soils, mulches, and interfaces adsorbed nearly 10 times as much diuron and more than twice as much simazine as terbacil. Adsorption of the herbicides was three to five times greater to the mulches than to the soils. Adsorption was significantly correlated with the organic …
Parasitoids Of The Bean Leaf Beetle (Coleoptera: Chrysomelidae) Found In Nebraska Soybean Fields, Stephen D. Danielson, James R. Brandle, Laurie Hodges
Parasitoids Of The Bean Leaf Beetle (Coleoptera: Chrysomelidae) Found In Nebraska Soybean Fields, Stephen D. Danielson, James R. Brandle, Laurie Hodges
Laurie Hodges
The bean leaf beetle, Cerotoma trifurcata (Forster) (Coleoptera: Chrysomelidae), is the major insect pest of soybean in Nebraska and throughout much of the midwestern United States. Natural enemies of the bean leaf beetle have been reported in other states, but none have been reported in Nebraska. In this study, bean leaf beetle adults were obtained by aspirating those found on soybean plants early in the season and by sweep net once plants were in the V4 stage (approximately 0.33 meter tall). Sampling was done in 1997 and 1998 in soybean fields at the University of Nebraska Agricultural Research and Development …
Windbreaks: An Important Component In A Plasticulture System, Laurie Hodges, James R. Brandle
Windbreaks: An Important Component In A Plasticulture System, Laurie Hodges, James R. Brandle
Laurie Hodges
Windbreaks reduce wind speed and modify the microclimate in sheltered areas. Many producers use wind barriers in their production systems, but few producers recognize all of the benefits available or understand the principles involved in windbreak function and design. Wind has direct and indirect effects on plant growth and development. Direct effects include soil abrasion, increased transpiration, and lodging. Indirect effects are based on changes in the crop microclimate, which influence plant growth and yield. Windbreaks increase soil and air temperatures and can extend the growing season in sheltered areas, resulting in increased crop development, earlier crop maturity, and market …
Does The Corn/Soybean Farmer Have Time For Alternative Crops? [Abstract], Lori A. Hoagland, Laurie Hodges, Glenn A. Helmers, James R. Brandle, Charles A. Francis
Does The Corn/Soybean Farmer Have Time For Alternative Crops? [Abstract], Lori A. Hoagland, Laurie Hodges, Glenn A. Helmers, James R. Brandle, Charles A. Francis
Laurie Hodges
Diversification of traditional row-crop farming in the Corn Belt is seen as advantageous in providing a wider economic base, decreasing economic risk associated with the link between commodity grain and cattle, increasing net farm income, and increasing biodiversity in the region. As farm size has increased to provide sufficient farm income, farm operations during the critical planting and harvesting windows are seen as limits to additional on-farm enterprises.
Trees On The Great Plains: Agro-Ecosystem Diversity, Laurie Hodges, Mary Ellen Dix, James R. Brandle, Mark O. Harrell, Robert J. Wright, Ron J. Johnson, Ronald M. Case, Kenneth G. Hubbard, Linda J. Young, Rebecca L. Fitzmaurice, Nathalie J. Sunderman, Michele M. Schoeneberger
Trees On The Great Plains: Agro-Ecosystem Diversity, Laurie Hodges, Mary Ellen Dix, James R. Brandle, Mark O. Harrell, Robert J. Wright, Ron J. Johnson, Ronald M. Case, Kenneth G. Hubbard, Linda J. Young, Rebecca L. Fitzmaurice, Nathalie J. Sunderman, Michele M. Schoeneberger
Laurie Hodges
Agriculture in the Great Plains faces increasing pressure for environmental stewardship and for more economical farming and pest management practices. The concept of sustainable agriculture was developed to address these needs. A sustainable agricultural system is one that consistently enhances environmental quality and the resource bases, provides basic human food and fiber needs, is economically viable, and enhances the quality of life for farmers and society. In the Great Plains, we define agroforestry as the use of trees to help make agricultural production systems more sustainable. The trees function to conserve soil, water, wildlife, and other natural resources. They also …
Impact Of Pesticide Residues In Composted Lawn Waste Compost On Vegetable Crops [Abstract], Cindy Stuefer-Powell, Patrick J. Shea, Laurie Hodges, Garald L. Horst
Impact Of Pesticide Residues In Composted Lawn Waste Compost On Vegetable Crops [Abstract], Cindy Stuefer-Powell, Patrick J. Shea, Laurie Hodges, Garald L. Horst
Laurie Hodges
To conserve space in the Lincoln (Nebraska) city landfill, a program for composting urban yard waste was initiated in 1992.
Influences Of Trees On Abundance Of Natural Enemies Of Insect Pests: A Review, Mary Ellen Dix, R. J. Johnson, Mark O. Harrell, Ronald M. Case, Robert J. Wright, Laurie Hodges, James R. Brandle, Michelle M. Schoeneberger, N. J. Sunderman, R. L. Fitzmaurice, L. J. Young, Kenneth G. Hubbard
Influences Of Trees On Abundance Of Natural Enemies Of Insect Pests: A Review, Mary Ellen Dix, R. J. Johnson, Mark O. Harrell, Ronald M. Case, Robert J. Wright, Laurie Hodges, James R. Brandle, Michelle M. Schoeneberger, N. J. Sunderman, R. L. Fitzmaurice, L. J. Young, Kenneth G. Hubbard
Laurie Hodges
In this article we review the use of natural enemies in crop pest management and describe research needed to better meet information needs for practical applications. Endemic natural enemies (predators and parasites) offer a potential but understudied approach to controlling insect pests in agricultural systems. With the current high interest in environmental stewardship, such an approach has special appeal as a method to reduce the need for pesticides while maintaining agricultural profitability. Habitat for sustaining populations of natural enemies occurs primarily at field edges where crops and edge vegetation meet. Conservation and enhancement of natural enemies might include manipulation of …
Relative Environmental Adaptation Of Bell Pepper Cultivars Across Three Southeastern States [Abstract], Laurie Hodges, Douglas C. Sanders, Katharine B. Perry
Relative Environmental Adaptation Of Bell Pepper Cultivars Across Three Southeastern States [Abstract], Laurie Hodges, Douglas C. Sanders, Katharine B. Perry
Laurie Hodges
Four commercially available bell pepper cultivars (Capsicum annum L.) were evaluated for yield stability over a combination of 3 years, 3 planting dates, and 7 locations across the Carolinas and Georgia.
A Case Study To Teach The Diagnostic Process: Determining The Cause Of Chlorosis In A Crop Of Cut Dicentra, Marci Spaw, Kimberley A. Williams, Laurie Hodges, Ellen T. Paparozzi, Ingrid L. Mallberg
A Case Study To Teach The Diagnostic Process: Determining The Cause Of Chlorosis In A Crop Of Cut Dicentra, Marci Spaw, Kimberley A. Williams, Laurie Hodges, Ellen T. Paparozzi, Ingrid L. Mallberg
Laurie Hodges
This universally accessible, Web-based decision case presents the challenge of determining the cause of foliar chlorosis in a crop of dicentra (Dicentra spectabilis) being forced as a cut flower for Valentine's Day sales. The case study serves as a tool to promote the development of diagnostic skills for production dilemmas, including nutritional disorders, disease problems, and evaluation of the appropriateness of cultural practices, Cut dicentra is a minor crop and standard production practices are not well established. Solving this case requires that students research production protocol, as well as nutritional and pest problems, and determine whether they have enough information …
Windbreaks, Robert J. Rouse, Laurie Hodges
Windbreaks, Robert J. Rouse, Laurie Hodges
Laurie Hodges
Windbreaks are an important and often overlooked component of a plasticulture system. They provide benefits regardless of where you farm or what crops you are raising. When wind protection is included in a plasticulture production system, crops benefit from less wind stress and an improved microclimate for growth and development. There is less crop injury due to soil abrasion or wind-whipping of plants, less extreme soil temperature fluctuations, and improved soil warming. Wind protection often results in earlier yields of higher-quality crops.
Improvement Of Carrot Stands With Plant Biostimulants And Fluid Drilling, Douglas C. Sanders, Jacqueline A. Ricotta, Laurie Hodges
Improvement Of Carrot Stands With Plant Biostimulants And Fluid Drilling, Douglas C. Sanders, Jacqueline A. Ricotta, Laurie Hodges
Laurie Hodges
We determined if application of certain naturally occurring compounds would stimulate emergence, growth, and development of carrot (Daucus carota L.). The commercially available biostimulants Agro-Lig, Enersol (humic acids), and Ergostim (folic acid) were added at a concentration of 1.5% (w/v) to Laponite 508 (magnesium sulfate) gel used in fluid drilling. Agro-Lig, Enersol and Ergostim increased carrot emergence >2-fold as measured by number of roots as compared to untreated seed. Number of carrots increased 50% to 75% when biostimulants were incorporated into the gel, compared to fluid-drilled seed without the biostimulants. When biostimulants were applied as a drench over untreated seeds …
Growth And Yield Of Snap Beans As Affected By Wind Protection And Microclimate Changes Due To Shelterbelts And Planting Dates, Laurie Hodges, Mohd Nazip Suratman, James R. Brandle, Kenneth G. Hubbard
Growth And Yield Of Snap Beans As Affected By Wind Protection And Microclimate Changes Due To Shelterbelts And Planting Dates, Laurie Hodges, Mohd Nazip Suratman, James R. Brandle, Kenneth G. Hubbard
Laurie Hodges
The effects of wind protection on growth and total and marketahle yields of snap bean (Phaseolus vulgaris L.) planted at 2-week intervals through the 1994 and 1995 growing seasons were examined. Research was conducted under nonirrigated conditions at the Shelterbelt Research Area, Univ, of Nebraska Agricultural Research and Development Center (ARDC) near Mead. 'Strike' (white-seeded) and 'Rushmore' (dark-seeded) were planted in locations sheltered from wind stress hy tree windbreaks (shelterbelts) and in locations exposed to normal winds using a randomized complete-block design with a split-split plot arrangement of treatments. Air temperature, soil temperature, humidity, wind speed, and wind direction were …