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Articles 1 - 30 of 66
Full-Text Articles in Plant Sciences
Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2007 And Revised Estimates For 2006, Nathan Kemper, Jennie Popp, Wayne Miller
Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2007 And Revised Estimates For 2006, Nathan Kemper, Jennie Popp, Wayne Miller
Research Reports and Research Bulletins
This report is the fourth in a series of reports examining agriculture’s economic contribution on the Arkansas economy. Utilizing data from the United States Bureau of Economic Analysis, USDA Economics Research Service, USDA National Agricultural Statistics Service, and Minnesota IMPLAN Group, Inc., the economic contribution of agriculture on the Arkansas economy was estimated for the most recent year available, 2007. Gross Domestic Product (GDP) by State information for Arkansas was compared with those of other states in the southeast U.S. to give a measure of the relative importance of agriculture in Arkansas. The total economic contribution of agriculture (direct, indirect, …
Skeleton Weed In Western Australia, Pocket Guide, State Skeleton Weed Committee, Department Of Agriculture And Food, Western Australia, Agriculture Protection Board
Skeleton Weed In Western Australia, Pocket Guide, State Skeleton Weed Committee, Department Of Agriculture And Food, Western Australia, Agriculture Protection Board
Bulletins 4000 -
The Skeleton Weed Program is a coordinated approach to eradicating skeleton weed in Western Australia. It is run jointly by the State Skeleton Weed Committee, the Department of Agriculture and the Agriculture Protection Board. It is funded through the skeleton weed levy collected from grain growers each harvest, and pooled in the Skeleton Weed Eradication Trust Fund.
Skeleton weed is targeted as a declared plant as it can drastically reduce crop yields (more than 1 tonne/ha in cereals) by competing for moisture and nutrients, mainly nitrogen. Its wiry stems impede headers and the sticky latex they contain cause machinery to …
Aspen In Scotland: Biodiversity And Management, John Parrott, Neil Mackenzie
Aspen In Scotland: Biodiversity And Management, John Parrott, Neil Mackenzie
Aspen Bibliography
No abstract provided.
Corn And Soybean Profitability 2010, Gregory S. Halich
Corn And Soybean Profitability 2010, Gregory S. Halich
Agricultural Economics Presentations
No abstract provided.
Grain Market Outlook, Cory G. Walters
Grain Market Outlook, Cory G. Walters
Agricultural Economics Presentations
No abstract provided.
Horticulture, Department Of Agricultural Economics, University Of Kentucky
Horticulture, Department Of Agricultural Economics, University Of Kentucky
Agricultural Economics Presentations
No abstract provided.
Wheat (Triticum Aestivum) Nam Proteins Regulate The Translocation Of Iron, Zinc, And Nitrogen Compounds From Vegetative Tissues To Grain, Brian M. Waters, Cristobal Uauy, Jorge Dubcovsky, Michael A. Grusak
Wheat (Triticum Aestivum) Nam Proteins Regulate The Translocation Of Iron, Zinc, And Nitrogen Compounds From Vegetative Tissues To Grain, Brian M. Waters, Cristobal Uauy, Jorge Dubcovsky, Michael A. Grusak
Department of Agronomy and Horticulture: Faculty Publications
The NAM-B1 gene is a NAC transcription factor that affects grain nutrient concentrations in wheat (Triticum aestivum). An RNAi line with reduced expression of NAM genes has lower grain protein, iron (Fe), and zinc (Zn) concentrations. To determine whether decreased remobilization, lower plant uptake, or decreased partitioning to grain are responsible for this phenotype, mineral dynamics were quantified in wheat tissues throughout grain development. Control and RNAi wheat were grown in potting mix and hydroponics. Mineral (Ca, Cu, Fe, K, Mg, Mn, P, S, and Zn) and nitrogen (N) contents of organs were determined at regular intervals to …
South Dakota Thriving, Fall 2009, College Of Agriculture &. Biological Sciences
South Dakota Thriving, Fall 2009, College Of Agriculture &. Biological Sciences
Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)
Table of Contents:
[Page] 2 Growing Farmers Markets: South Dakota Cooperative Extension Service Helps Develop and Grow Booming Homegrown markets
[Page] 4 Lighari Leads Restructuring of Extension: Director of South Dakota Cooperative Extension Service Focuses on Building Relationships
[Page} 6 South Dakota's Newest Research Station: The Addition of the SDSU Cow Camp Means Another Tremendous Resource for South Dakota and SDSU
[Page] 8 SDSU Rodeo Builds World Champs: Focus on Academics and Team Leads to Success Inside Both the Classroom and the Arena
|[Page] 12 Behind the Scenes in SDSU's Anatomy Lab: SDSU's Hands-On Anatomy Lab Gives Students the Edge …
Quantification Of Bt-Endotoxin Exposure Pathways In Carabid Food Webs Across Multiple Transgenic Events, Julie A. Peterson, John J. Obrycki, James D. Harwood
Quantification Of Bt-Endotoxin Exposure Pathways In Carabid Food Webs Across Multiple Transgenic Events, Julie A. Peterson, John J. Obrycki, James D. Harwood
West Central Research and Extension Center, North Platte
Despite the reported specificity of Bacillus thuringiensis proteins against target pests, a number of studies have indicated that the uptake of Bt-endotoxins from bioengineered crops could have negative effects on natural enemies. It is therefore essential to quantify exposure pathways in non-target arthropod food webs across multiple transgenic events. Adult ground beetles (Coleoptera: Carabidae) were collected from transgenic corn fields expressing lepidopteran-specific Cry1Ab, coleopteran-specific Cry3Bb1, and both Cry1Ab and Cry3Bb1 (stacked event), as well as a non-transgenic isoline. Carabid gut-contents were screened for Cry1Ab Bt-endotoxin using enzyme-linked immunosorbent assay. Significant numbers of carabids tested positive for Cry1Ab from the lepidopteran-specific …
Best Management Practices For Corn Production In South Dakota: Websites With Related Information, David E. Clay, Kurtis D. Reitsma
Best Management Practices For Corn Production In South Dakota: Websites With Related Information, David E. Clay, Kurtis D. Reitsma
SDSU Extension Circulars
No abstract provided.
Best Management Practices For Corn Production In South Dakota: Recordkeeping, James A. Wilson, Kurtis D. Reitsma, David E. Clay
Best Management Practices For Corn Production In South Dakota: Recordkeeping, James A. Wilson, Kurtis D. Reitsma, David E. Clay
SDSU Extension Circulars
Recordkeeping is an important component of all crop production systems. The time that is spent maintaining careful records can help to improve the production, profit, and overall efficiency of the production enterprise. Records provide information needed to identify successes and failures.
Best Management Practices For Corn Production In South Dakota: Corn Drying And Storage, Richard E. Nicolai
Best Management Practices For Corn Production In South Dakota: Corn Drying And Storage, Richard E. Nicolai
SDSU Extension Circulars
The goal for a corn drying and storage system is to maintain grain quality without impeding harvesting or shipping. This chapter describes the factors that influence grain quality, proper handling techniques, drying procedures, storage management, and safety precautions.
Best Management Practices For Corn Production In South Dakota: Corn Grain Harvest, Daniel S. Humberg, Richard E. Nicolai, Kurtis D. Reitsma
Best Management Practices For Corn Production In South Dakota: Corn Grain Harvest, Daniel S. Humberg, Richard E. Nicolai, Kurtis D. Reitsma
SDSU Extension Circulars
Corn (grain) harvest can begin when grain moisture drops below 30%. However, most producers will allow corn to dry in the field until grain moisture is between 18 to 25%. Harvesting corn when grain moisture levels are high can result in excessive drying costs, kernel damage, and harvest loss from improper threshing. Allowing corn to stay in the field too long can result in excess harvest loss from stalk lodging, ear drop, or kernel shattering. An optimal harvest depends not only on the condition of the crop but also on the proper maintenance and adjustment of harvest and grain handling …
Best Management Practices For Corn Production In South Dakota: Corn Insect Pests, Michael A. Catangui, Billy W. Fuller, B. Wade French
Best Management Practices For Corn Production In South Dakota: Corn Insect Pests, Michael A. Catangui, Billy W. Fuller, B. Wade French
SDSU Extension Circulars
Historically, the major corn insect pests have been corn rootworms (northern and western), European corn borer, and black cutworm. Bt-corn hybrids are effective against most of these pests. However, Bt-corn hybrids are not effective against corn leaf aphid, corn root aphid, sap beetles, corn rootworm adults, grasshoppers, white grubs, wireworms, seed corn beetle, and seed corn maggots. These insect pests can reduce corn yields. This chapter discusses the management and biology of important corn insect pests commonly observed in South Dakota.
Best Management Practices For Corn Production In South Dakota: Soil Fertility, David E. Clay, Kurtis D. Reitsma
Best Management Practices For Corn Production In South Dakota: Soil Fertility, David E. Clay, Kurtis D. Reitsma
SDSU Extension Circulars
Corn requires sufficient amounts of at least 14 nutrients for optimal production (fig. 7.1). Soil fertility strategies should consider soil residual plant nutrients, cost of fertilizer relative to the value of corn, and management techniques that increase efficiency.
Best Management Practices For Corn Production In South Dakota: Corn Diseases In South Dakota, Martin A. Draper, Marie A. Langham, Sharon Clay, Bradley E. Ruden
Best Management Practices For Corn Production In South Dakota: Corn Diseases In South Dakota, Martin A. Draper, Marie A. Langham, Sharon Clay, Bradley E. Ruden
SDSU Extension Circulars
Corn diseases can be separated into 1) seed and seedling diseases, 2) root-infecting nematodes, 3) leaf diseases, 4) rusts, 5) stalk rots, and 6) ear and grain molds. Yield losses can result from diseases directly reducing yields or from harvestability, spoilage, or marketing and/or use issues associated with mycotoxin contamination. See Table 9.1 for corn disease management information. Attention to optimal seed quality, hybrid selection, seed treatments, weed and insect control, crop rotation, soil fertility, irrigation, and prompt harvest can reduce disease impacts. This chapter discusses aspects of recognizing and managing South Dakota corn diseases.
Best Management Practices For Corn Production In South Dakota: Weeds And Herbicide Injury In Corn, Sharon Clay, Mike J. Moechnig
Best Management Practices For Corn Production In South Dakota: Weeds And Herbicide Injury In Corn, Sharon Clay, Mike J. Moechnig
SDSU Extension Circulars
This chapter addresses weed problems and herbicide injuries that commonly occur in South Dakota corn production. Photographs and information are provided to assist producers in managing weed pressure and to help identify herbicide injury symptoms resulting from improper application, unintentional exposure, or adverse environmental conditions.
Best Management Practices For Corn Production In South Dakota: Useful Calculations: Corn Yields And Storage Requirements, Kurtis D. Reitsma, David Clay, Sharon Clay, C. Gregg Calson
Best Management Practices For Corn Production In South Dakota: Useful Calculations: Corn Yields And Storage Requirements, Kurtis D. Reitsma, David Clay, Sharon Clay, C. Gregg Calson
SDSU Extension Circulars
No abstract provided.
Best Management Practices For Corn Production In South Dakota, David Clay, Kurtis D. Reitsma, Sharon Clay
Best Management Practices For Corn Production In South Dakota, David Clay, Kurtis D. Reitsma, Sharon Clay
SDSU Extension Circulars
Table of Contents:
Introduction [Page] 1
1. Corn Growth and Development [Page] 3
2. Corn Hybrid Selection [Page] 9
3. Corn Planting Guide [Page] 13
4. Seasonal Hazards—Frost, Hail, Drought, and Flooding [Page] 17
5. Tillage, Crop Rotations, and Cover Crops [Page] 21
6. Irrigation and Salt Management [Page] 31
7. Soil Fertility [Page] 39
8. Corn Insect Pests [Page] 49
9. Corn Diseases in South Dakota [Page] 59
10. Weeds and Herbicide Injury in Corn [Page] 71
11. Corn Grain Harvest [Page] 93
12. Corn Drying and Storage [Page] 99
13. Recordkeeping [Page] 107
14. Useful Calculations: Corn Yields …
Best Management Practices For Corn Production In South Dakota: Corn Calendar And Troubleshooting Guide, Kurtis D. Reitsma, Sharon Clay, C. Gregg Calson, David Clay
Best Management Practices For Corn Production In South Dakota: Corn Calendar And Troubleshooting Guide, Kurtis D. Reitsma, Sharon Clay, C. Gregg Calson, David Clay
SDSU Extension Circulars
No abstract provided.
Tillage And Cropping Sequence Impacts On Nitrogen Cycling In Dryland Farming In Eastern Montana, Usa, Upendra M. Sainju, Thecan Caesar-Tonthat, Andrew W. Lenssen, Robert G. Evans, Robert Kolberg
Tillage And Cropping Sequence Impacts On Nitrogen Cycling In Dryland Farming In Eastern Montana, Usa, Upendra M. Sainju, Thecan Caesar-Tonthat, Andrew W. Lenssen, Robert G. Evans, Robert Kolberg
Andrew W. Lenssen
Information on N cycling in dryland crops and soils as influenced by long-term tillage and cropping sequence is needed to quantify soil N sequestration, mineralization, and N balance to reduce N fertilization rate and N losses through soil processes. The 21-yr effects of the combinations of tillage and cropping sequences was evaluated on dryland crop grain and biomass (stems + leaves) N, soil surface residue N, soil N fractions, and N balance at the 0–20 cm depth in Dooley sandy loam (fine-loamy, mixed, frigid, Typic Argiboroll) in eastern Montana, USA. Treatments were no-tilled continuous spring wheat (Triticum aestivum L.) (NTCW), …
Dryland Crop Yields And Soil Organic Matter As Influenced By Long-Term Tillage And Cropping Sequence, Upendra M. Sainju, Andrew W. Lenssen, Thecan Caesar-Tonthat, Robert G. Evans
Dryland Crop Yields And Soil Organic Matter As Influenced By Long-Term Tillage And Cropping Sequence, Upendra M. Sainju, Andrew W. Lenssen, Thecan Caesar-Tonthat, Robert G. Evans
Andrew W. Lenssen
Novel management practices are needed to improve the declining dryland crop yields and soil organic matter contents using conventional farming practices in the northern Great Plains. We evaluated the 21-yr effect of tillage and cropping sequence on dryland grain and biomass (stems + leaves) yields of spring wheat (Triticum aestivum L.), barley (Hordeum vulgare L.), and pea (Pisum sativum L.) and soil organic matter at the 0- to 20-cm depth in eastern Montana, USA. Treatments were no-tilled continuous spring wheat (NTCW), spring-tilled continuous spring wheat (STCW), fall- and spring-tilled continuous spring wheat (FSTCW), fall- and spring-tilled spring wheat-barley (1984–1999) followed …
Increased Hydrogen Production By Genetic Engineering Of Escherichia Coli, Zhanmin Fan, Ling Yuan, Ranjini Chatterjee
Increased Hydrogen Production By Genetic Engineering Of Escherichia Coli, Zhanmin Fan, Ling Yuan, Ranjini Chatterjee
Kentucky Tobacco Research and Development Center Faculty Publications
Escherichia coli is capable of producing hydrogen under anaerobic growth conditions. Formate is converted to hydrogen in the fermenting cell by the formate hydrogenlyase enzyme system. The specific hydrogen yield from glucose was improved by the modification of transcriptional regulators and metabolic enzymes involved in the dissimilation of pyruvate and formate. The engineered E. coli strains ZF1 (ΔfocA; disrupted in a formate transporter gene) and ZF3 (ΔnarL; disrupted in a global transcriptional regulator gene) produced 14.9, and 14.4 µmols of hydrogen/mg of dry cell weight, respectively, compared to 9.8 µmols of hydrogen/mg of dry cell weight …
Severity Of Root Rot In Mature Subterranean Clover And Associated Fungal Pathogens In The Wheatbelt Of Western Australia, Tim Scanlon, Tiernan A. O’Rourke, Martin J. Barbetti, Megan H. Ryan, Len J. Wade, Alan C. Mckay, Ian T. Riley, Hua Li, Krishnapillai Sivasithamparam
Severity Of Root Rot In Mature Subterranean Clover And Associated Fungal Pathogens In The Wheatbelt Of Western Australia, Tim Scanlon, Tiernan A. O’Rourke, Martin J. Barbetti, Megan H. Ryan, Len J. Wade, Alan C. Mckay, Ian T. Riley, Hua Li, Krishnapillai Sivasithamparam
Journal articles
Pasture decline is considered to be a serious challenge to agricultural productivity of subterranean clover across southern Australia. Root disease is a significant contributing factor to pasture decline. However, root disease assessments are generally carried out in the early part of the growing season and in areas predominantly sown to permanent pastures. For this reason, in spring 2004, a survey was undertaken to determine the severity of root disease in mature subterranean clover plants in pastures located in the wheatbelt of Western Australia. DNA-based soil assays were used to estimate population density in the soil of a variety of soil-borne …
2009 Chart Book: Weed Management, Hilary A. Sandler
2009 Chart Book: Weed Management, Hilary A. Sandler
Cranberry Chart Book - Management Guide
No abstract provided.
2009 Problematic Weed Survey And Flame Cultivation, Hilary A. Sandler, Katherine Ghantous
2009 Problematic Weed Survey And Flame Cultivation, Hilary A. Sandler, Katherine Ghantous
Cranberry Station Research Reports and Surveys
No abstract provided.
Intsormil 2009 Annual Report, John M. Yohe, Kimberly Christiansen, Joan Frederick
Intsormil 2009 Annual Report, John M. Yohe, Kimberly Christiansen, Joan Frederick
INTSORMIL Impacts and Bulletins
The 2009 INTSORMIL Annual Report presents the progress and notable achievements by the Sorghum, Millet and Other Grains CRSP during the period of September 30, 2008 through September 29, 2009. These results are an outcome of partnerships between scientists at six U.S. Land Grant Universities (Kansas State University, University of Nebraska, The Ohio State University, Purdue University, Texas A&M University and West Texas A&M University), scientists of the Agricultural Research Service of the U. S. Department of Agriculture at Tifton, Georgia and the National Agricultural Research Systems (NARS) and National Universities in sixteen countries in Central America, West Africa, East …
Evaluating The Effects Of Organic And Conventional Inputs On Soil Chemical And Biological Properties In A Four-Year Vegetable Rotation And The Investigation Of Soil Microbial Properties On Plant Gene Expression, Audrey Law
University of Kentucky Doctoral Dissertations
The objective of this research was to determine the effects of conventional inputs on soil chemical and biological properties compared to organic systems in a four year vegetable rotation. Tillage and cover crops were the same in all treatments to avoid confounding factors often present in similar research. Additional experiments investigated plant gene expression in organic and conventional management systems and in soils with decreased microbial diversity. Experimental plots were prepared in the spring of 2004; four replications of three management treatments, organic, low-input and conventional, were arranged in a randomized complete block design. The rotation consisted of edamame soybean, …
Performance Of Small-Fruited Pumpkin Cultivars In Maine, David T. Handley, Mark G. Hutton, Gregory J. Koller
Performance Of Small-Fruited Pumpkin Cultivars In Maine, David T. Handley, Mark G. Hutton, Gregory J. Koller
Cooperative Extension - Agriculture
A small-fruited (2-4 lb) or “pie” type pumpkin variety trial was established in the spring of 2009 at Highmoor Farm in Monmouth, ME. Three replications of seven varieties were direct-seeded on 18 June through black plastic mulch. Plots were 18 feet long with three feet between plants and six feet between rows. All fertilizer was applied according to soil test recommendations and incorporated prior to mulch application and seeding. Fruit were harvested on 18 September. Top performing varieties in terms of yield per plot included ‘Chucky’, ‘Small Sugar’, and ‘Field Trip’. ‘Fall Splendor’ produced the largest fruit in the trial, …
Post Weaning Management Of Heifer Calves Impacts Average Daily Gain And Feed Efficiency As Pregnant Heifers, D. M. Larson, Tonya L. Meyer, L. A. Stalker, Richard N. Funston
Post Weaning Management Of Heifer Calves Impacts Average Daily Gain And Feed Efficiency As Pregnant Heifers, D. M. Larson, Tonya L. Meyer, L. A. Stalker, Richard N. Funston
West Central Research and Extension Center, North Platte
Three experiments evaluated replacement heifer development systems and subsequent effects on gain and efficiency of pregnant heifers. In Exp. 1 and 2, were developed grazing corn residue (CR; 422 ± 5 kg) or fed in a dry lot (DL; 446 ± 5 kg) prior to breeding. In Exp. 1, a subset of pregnant heifers (n = 40) were individually fed a diet composed of 90% grass hay (11.7 % CP; DM basis) and 10% of a wet distillers grains plus solubles/straw mixture (21.8 % CP; DM basis) during late gestation. In Exp. 2, 55 pregnant …