Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Arkansas (7)
- Blackberries (3)
- Cotton (2)
- And Biodiesel (1)
- And Horticulture Production (1)
-
- Apple tree growth (1)
- Apples (1)
- Blackberry plant (1)
- Catfish (1)
- Corn (1)
- Cotton production (1)
- Cotton research (1)
- Crop (1)
- Crop management (1)
- Crop production (1)
- Crop quality (1)
- Crop yield (1)
- Cultivars (1)
- Decision making (1)
- Farm size (1)
- Farmers market (1)
- Farmland Value (1)
- Financial Situation (1)
- Fruit virus (1)
- Fruiting (1)
- Fungus (1)
- Genetic base (1)
- Grain quality (1)
- Grain sorghum (1)
- Grain yield (1)
- Publication
-
- Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences (11)
- Arkansas Agricultural Experiment Station Research Series (8)
- Inquiry: The University of Arkansas Undergraduate Research Journal (4)
- Journal of the Arkansas Academy of Science (2)
- Research Reports and Research Bulletins (1)
- Publication Type
Articles 1 - 26 of 26
Full-Text Articles in Entire DC Network
Arkansas Corn And Grain Sorghum Performance Tests 2003, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge
Arkansas Corn And Grain Sorghum Performance Tests 2003, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge
Arkansas Agricultural Experiment Station Research Series
Corn and grain sorghum performance tests are conducted each year in Arkansas by the University of Arkansas Division of Agriculture. The tests provide information to companies marketing seed within the state, and aid the Arkansas Cooperative Extension Service in formulating recommendations for producers.
Summaries Of Arkansas Cotton Research 2002, Derrick M. Oosterhuis
Summaries Of Arkansas Cotton Research 2002, Derrick M. Oosterhuis
Arkansas Agricultural Experiment Station Research Series
The average yield in Arkansas in 2002 was 871 lb lint/acre from 920,000 harvested acres (960,000 planted) for a total of 1.67 million bales at a value of$336.5 million. This yield was second only to the record 877 lb lint/acre achieved in 1994. Last year's crop yield, and the five-year average, on a per acre basis are exceeded in the U.S. Cotton Belt only by California and Arizona. Cotton yields in Arkansas increased steadily during the eighties, but in the last decade yields have leveled off. Furthermore, the last five years have had extreme year-to-year variability in yields, which is …
Horticultural Studies 2002, Michael R. Evans, Douglas E. Karcher
Horticultural Studies 2002, Michael R. Evans, Douglas E. Karcher
Arkansas Agricultural Experiment Station Research Series
No abstract provided.
Arkansas Agriculture Situation And Outlook 2003, Bruce L. Ahrendsen, Eric J. Wailes, Bruce L. Dixon, Michael Popp, Pat Manning, Tony E. Windham
Arkansas Agriculture Situation And Outlook 2003, Bruce L. Ahrendsen, Eric J. Wailes, Bruce L. Dixon, Michael Popp, Pat Manning, Tony E. Windham
Arkansas Agricultural Experiment Station Research Series
The purpose of this research series is to highlight the situation of Arkansas farmers and to offer an outlook for 2003. The research emphasizes the production, price, income, policy, financial, farmland value, and interest rate outlook for Arkansas farmers and considers the impact of the macro economy on agriculture. In addition, the advantages and disadvantages of biodiesel as an alternative to petroleum diesel are discussed.
B.R. Wells Rice Research Studies 2002, R. J. Norman, J.-F. Meullenet
B.R. Wells Rice Research Studies 2002, R. J. Norman, J.-F. Meullenet
Arkansas Agricultural Experiment Station Research Series
Arkansas is the leading rice producing state in the U .S .. representing almost 46% of the total U .S. production and almost 47% of the total acres planted to rice . Rice cultural practices vary across the state and across the U.S. However, due to changing political, environmental, and economic times, the practices arc dynamic. This survey was initiated in 2002 to monitor how the changing times reflect the changes in the way Arkansas rice producers approach their livelihood. The survey was conducted by polling county Extension agents in each of the counties in Arkansas that produce rice. Questions …
Arkansas Small-Grain Cultivar Performance Tests 2002-2003, J. T. Kelly, C. E. Parsons, R. K. Bacon
Arkansas Small-Grain Cultivar Performance Tests 2002-2003, J. T. Kelly, C. E. Parsons, R. K. Bacon
Arkansas Agricultural Experiment Station Research Series
Small-grain cultivar performance tests are conducted each year in Arkansas by the Arkansas Agricultural Experiment Station, Department of Crop, Soil and Environmental Sciences. The tests provide information to companies developing cultivars and/or marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating cultivar recommendations for smallgrain producers.
Arkansas Cotton Variety Test 2002, E. M. Bourland, J. T. Johnson, S. B. Jackson, M. W. Duren, J. M. Hornbeck, F. E. Groves, W. C. Robertson
Arkansas Cotton Variety Test 2002, E. M. Bourland, J. T. Johnson, S. B. Jackson, M. W. Duren, J. M. Hornbeck, F. E. Groves, W. C. Robertson
Arkansas Agricultural Experiment Station Research Series
The primary aim of the Arkansas Cotton Variety Test is to provide unbiased data regarding the agronomic performance of cotton varieties and advanced breeding lines in the major cotton-growing areas of Arkansas. This information helps seed dealers establish marketing strategies and assists producers in choosing varieties to plant. In this way, the annual test facilitates the inclusion of new, improved genetic material into Arkansas cotton production. Variety adaptation is determined by evaluation of the varieties and lines at four University of Arkansas research stations located near Keiser, Clarkedale, Marianna, and Rohwer. Tests are duplicated in irrigated and non-irrigated culture at …
Wayne E. Sabbe Arkansas Soil Fertility Studies 2002, Nathan A. Slaton
Wayne E. Sabbe Arkansas Soil Fertility Studies 2002, Nathan A. Slaton
Arkansas Agricultural Experiment Station Research Series
Rapid technological changes in crop management and production require that the research efforts also be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies contained within will allow producers to compare their practices with the university’s research efforts. Additionally, soil test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.
Contents, Discovery Editors
Contents, Discovery Editors
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
Propagation Of Thornless Arkansas Blackberries By Hardwood Cuttings, Mark Bray, Curt C. Rom, John R. Clark
Propagation Of Thornless Arkansas Blackberries By Hardwood Cuttings, Mark Bray, Curt C. Rom, John R. Clark
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Effects of auxin application and cutting location on canes on adventitious root development in hardwood cuttings of three Arkansas thornless blackberry cultivars were studied. Dormant canes were collected from one-year-old plants of ‘Apache’, ‘Arapaho’, and ‘Navaho’ and stored in a cold room until February. Two- or three-node cuttings were taken from the canes at apical, mid, and basal locations along the cane and were placed under intermittent mist in a perlite-filled greenhouse bed. Cuttings were either untreated or treated with auxin indole-3-butyric acid (IBA), applied as a liquid quick dip at 0.3%. In general, cutting diameter was greatest for basal …
Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 4 2003, Several Authors
Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 4 2003, Several Authors
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
Chitosanase May Enhance Anti-Fungal Defense Responses In Transgenic Tobacco, Bill L. Hendrix, James Mcd. Stewart
Chitosanase May Enhance Anti-Fungal Defense Responses In Transgenic Tobacco, Bill L. Hendrix, James Mcd. Stewart
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Chitosanase is an enzyme, similar to chitinase, capable of hydrolyzing the β-1,4-linkages between N-acetyl-D-glucosamine and D-glucosamine residues in partially acetylated chitosan polymers found in fungal cell walls. When attacked by pathogenic fungi, many plants exploit this hydrolytic action as a component of a larger post-attack defense response, but these enzymes may also play a role in the initial plant-pathogen interaction via the generation of elicitors resulting from the hydrolysis of fungal cell walls. To gain insight into these mechanisms, a Paenbacillus chitosanase was cloned, sequenced, and modified for plant expression. The modified gene was delivered to tobacco (Nicotiana tabacum L. …
Effect Of Triticum Turgidum Cytoplasm On Test Weight Of Soft Red Winter Wheat, Juan Mayta, Robert Bacon, John Kelly, Edward Gbur
Effect Of Triticum Turgidum Cytoplasm On Test Weight Of Soft Red Winter Wheat, Juan Mayta, Robert Bacon, John Kelly, Edward Gbur
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
The effect of Triticum turgidum cytoplasm on soft red winter wheat (T. aestivum) was studied relative to test weight (bushel weight) and agronomic traits such as heading date, resistance to leaf rust, and plant color. The cytoplasmic effects were studied in three genetic backgrounds by crossing the cultivars Jackson, Pioneer 2684, and Wakefield with a plant introduction PI590277 that carried T. turgidum cytoplasm. Twelve alloplasmic and euplasmic populations were developed through a backcrossing procedure. The study used a micro test weight procedure to compare F4 lines within the populations for test weight. The data for other agronomic traits were taken …
Effects Of Virus Infection On Release Of Volatile Organic Compounds From Insect-Damaged Bean, Phaseolus Vulgaris, Sarah E. Sossamon, Britney K. Jackson, B. Alison Drumwright, Kenneth L. Korth, Gisela F. Erf
Effects Of Virus Infection On Release Of Volatile Organic Compounds From Insect-Damaged Bean, Phaseolus Vulgaris, Sarah E. Sossamon, Britney K. Jackson, B. Alison Drumwright, Kenneth L. Korth, Gisela F. Erf
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Insects can serve as important vectors of plant pathogens, especially viruses. Insect feeding on plants causes the systemic release of a wide range of plant volatile compounds that can serve as an indirect plant defense by attracting natural enemies of the herbivorous insect. Previous work suggests that the Mexican bean beetle (Epilachna varivestis) prefers to feed on plants infected by either of two viruses that it is known to transmit: Southern bean mosaic virus (SBMV) or Bean pod mottle virus (BPMV). A possible explanation for the preferred feeding on virus-infected tissues is that the beetles are attracted by volatile signals …
Instructions For Authors, Discovery Editors
Instructions For Authors, Discovery Editors
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
Focus Group Survey Results: Typical Arkansas Crop Producer Production And Marketing Practices, Jason Hill, Michael Popp, Patrick Manning
Focus Group Survey Results: Typical Arkansas Crop Producer Production And Marketing Practices, Jason Hill, Michael Popp, Patrick Manning
Research Reports and Research Bulletins
This report contains information from a 2001 focus group survey of production practices and marketing decisions of ‘typical’ representative Arkansas farms from selected counties in eastern Arkansas. While the National Agricultural Statistical Service (NASS) publishes similar information through the Arkansas Agricultural Statistics Service, reporting of these statistics is often not differentiated across crops or specific farm type. Therefore, one of the major objectives of this survey was to ascertain production practices for specific crops and farm types typical of row crop farms in eastern Arkansas. Responses were categorized into production regions dominated by either rice or cotton production. The results …
Chitosanase May Enhance Anti-Fungal Defense Responses In Transgenic Tobacco, Bill L. Hendrix
Chitosanase May Enhance Anti-Fungal Defense Responses In Transgenic Tobacco, Bill L. Hendrix
Inquiry: The University of Arkansas Undergraduate Research Journal
Fungicides are expensive, dangerous, and can be harmful to the environment, but they are often necessary for profitable farming operations. New technologies may soon allow farmers to replace these chemicals with genetically engineered plants producing antifungal enzymes that degrade fungal cell walls. To explore this option, a Paenbacillus chitosanase gene was cloned, sequenced, and modified for plant expression. The modified gene was delivered to tobacco (Nicotiana tabacum L cv. Xanthine) leaf disks via Agrobacterium tumenfaciens-mediated transformation. The putative GMOs were tested for transgene integration, transcription, and translation. Confirmed transformants were then screened for enhanced responses to a Rhizoctonia solani cell …
The Role Of Natural Calcium Oxalate Crystals In Plant Defense Against Chewing Insects, Sarah J. Doege
The Role Of Natural Calcium Oxalate Crystals In Plant Defense Against Chewing Insects, Sarah J. Doege
Inquiry: The University of Arkansas Undergraduate Research Journal
Calcium oxalate is the most abundant insoluble mineral found in plants and it is common among many plant families. Calcium oxalate crystals in plants can appear as irregular rectangles, spiked balls, or needles. The formidable appearance of these crystals has lead to speculation that they might serve as a form of pest control by deterring chewing insects. We utilized mutant plant lines to assess the effects of plant calcium oxalate crystals on the survival and feeding habits of chewing insects. We have taken advantage of calcium oxalate-deficient (cod) mutants of the barrel medic, Medicago truncatula Calcium oxalate crystals accumulate in …
Nuclear Ribosomal Its Region Sequences For Differentiation Of Rubus Genotypes, Eric T. Stafne, John R. Clark, Allen L. Szalanski
Nuclear Ribosomal Its Region Sequences For Differentiation Of Rubus Genotypes, Eric T. Stafne, John R. Clark, Allen L. Szalanski
Journal of the Arkansas Academy of Science
Previous molecular investigations into Rubus species diversity have yielded significant knowledge about species relatedness. However, little work has been focused at the cultivar level. Random amplified polymorphic DNA(RAPD)-PCR studies have successfully differentiated closely related cultivars. The ability to definitively distinguish blackberry and red raspberry cultivars based on other molecular methods could prove useful in many aspects of breeding and proprietary protection. In this study, the nuclear ribosomal DNA internal transcribed spacer regions (ITS) of six Rubus cultivars were sequenced. DNA sequencing revealed little genetic variation among blackberry cultivars, but revealed distinctions between blackberry and red raspberry cultivars. Analysis by maximum-parsimony …
On The Rare Endemic Hydrophyllum Brownei Kral & Bates (Browne's Waterleaf): New Population Information And A Recommendation For Change In Status, Travis D. Marsico
On The Rare Endemic Hydrophyllum Brownei Kral & Bates (Browne's Waterleaf): New Population Information And A Recommendation For Change In Status, Travis D. Marsico
Journal of the Arkansas Academy of Science
Hydrophyllum brownei Krai & Bates (Browne's waterleaf), newly described in 1991, is endemic to the Ouachita Mountain Natural Division of Arkansas. For the purpose of better understanding population parameters within which H. brownei grows, ranges of shade values, population extents, and population distance relationships to streams were measured. Hydrophyllum brownei grows in extremely high shade, in populations of widely varying sizes, and always in association with a stream system. In order to list species associated with H. brownei, vouchers of species assemblages were collected at the H. brownei sites visited. The species is designated as critically imperiled globally because of …
Letter From The Dean, Gregory J. Weidemann
Letter From The Dean, Gregory J. Weidemann
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
The Characteristics Of Consumers And Producers Using Farmers’ Markets, Walter Hugo Anez, Michael R. Thomsen
The Characteristics Of Consumers And Producers Using Farmers’ Markets, Walter Hugo Anez, Michael R. Thomsen
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
This study examines the perceptions of both consumers and producers towards farmers’ markets. Consumer perceptions are generalized from several previous studies conducted throughout the United States. Producer information was gathered through a survey of members of one farmers’ market in Arkansas. Previous studies, conducted in both rural and urban areas, indicate that the typical famers’ market customer is well educated and is of higher than average income. These consumers place great importance on quality of produce, knowledge that produce is grown locally, and the social interaction obtained through the farmers’ market experience. For producers, the farmers’ market is an important …
The Effects Of Potential Organic Apple Fruit Thinners On Gas Exchange And Growth Of Model Apple Trees: A Model Plant Study Of Transient Photosynthetic Inhibitors And Their Effect On Physiology And Growth, Jason D. Mcafee, Curt C. Rom
The Effects Of Potential Organic Apple Fruit Thinners On Gas Exchange And Growth Of Model Apple Trees: A Model Plant Study Of Transient Photosynthetic Inhibitors And Their Effect On Physiology And Growth, Jason D. Mcafee, Curt C. Rom
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Few fruit thinners have been certified for organic fruit growers. Previous studies have shown that herbicides or shade are capable of reducing photosynthesis and are effective fruit-thinning techniques, although impractical. This project evaluated use of a model plant system of vegetative apple trees grown under controlled conditions to study photosynthetic inhibitors, which could be used as potential organic thinning agents. Various concentrations of osmotics, salts, and oils (lime-sulfur, potassium bisulfite, potassium bicarbonate, sodium chloride, soybean oil) were applied to actively growing apple trees and showed a reduced trend on the rate of apple tree photosynthetic assimilation (Pn), evapotranspiration (Et), and …
Response Of Blackberry Cultivars To Nematode Transmission Of Tobacco Ringspot Virus, Alisha Sanny, John R. Clark, Rose Gergerich
Response Of Blackberry Cultivars To Nematode Transmission Of Tobacco Ringspot Virus, Alisha Sanny, John R. Clark, Rose Gergerich
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
A study was conducted on eight cultivars of blackberry (‘Apache’, ‘Arapaho’, ‘Chester’, ‘Chickasaw’, ‘Kiowa’, ‘Navaho’, ‘Shawnee’, and ‘Triple Crown’), of which four plants of each were previously determined in the fall of 2001 to have root, but not leaf, infection with Tobacco ringspot virus (TRSV). The objectives of our study were to determine virus effects on plant vigor and the spread of virus infection in the plants. Eight plants of each cultivar, four infected and four free of infection, were grown in pots on a gravel pad for the 2002 growing season, and samples of primocane and floricane leaves were …
Response Of Blackberry Cultivars To Nematode Transmission Of Tobacco Ringspot Virus, Alisha Sanny
Response Of Blackberry Cultivars To Nematode Transmission Of Tobacco Ringspot Virus, Alisha Sanny
Inquiry: The University of Arkansas Undergraduate Research Journal
A study was conducted on eight cultivars of blackberry ('Apache', 'Arapaho', 'Chester', 'Chickasaw', 'Kiowa', 'Navaho', 'Shawnee', and 'Triple Crown'), of which four plants of each were previously determined in the fall of 2001 to have root, but not leaf, infection with Tobacco ringspot virus (TRSV). The objective of our study was to determine virus effects on plant vigor, and the spread of virus infection in the plants. Eight plants of each cultivar, four infected and four free of infection, were grown in pots on a gravel pad for the 2002 growing season, and samples of primocane and floricane leaves were …
Characterization Of Wound-Inducible Genes Encoding Enzymes For Terpenoid Biosynthesis In Medicago Truncatula, Mandy M. Cox
Characterization Of Wound-Inducible Genes Encoding Enzymes For Terpenoid Biosynthesis In Medicago Truncatula, Mandy M. Cox
Inquiry: The University of Arkansas Undergraduate Research Journal
In addition to having numerous applications and pharmaceuticals, terpenoids are an important class of defensive compounds that can accumulate in plants after pathogen infection or injury by insects. Sequences of DNA encoding putative terpene synthases and an oxidosqualene synthase, isolated from insect-damaged Medicago truncatula leaves, were selected from an expressed sequence tag (EST) data base. The cDNA clones were used as radio-labeled probes to analyze gene expression in leaves treated with factors known to trigger a defense response in plants. Transcript levels for all of the genes examined increased in response to artificial wounding, insect herbivory, and methyl jasmonate (meJA) …