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University of Arkansas, Fayetteville

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Articles 991 - 1020 of 1055

Full-Text Articles in Agronomy and Crop Sciences

B.R. Wells Rice Research Studies 1998, R. J. Norman, T. H. Johnston Aug 1999

B.R. Wells Rice Research Studies 1998, R. J. Norman, T. H. Johnston

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

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Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1998, Ron E. Talbert, Lance A. Schmidt, Jennifer A. Wells Jul 1999

Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1998, Ron E. Talbert, Lance A. Schmidt, Jennifer A. Wells

Arkansas Agricultural Experiment Station Research Series

Growers generally use herbicides to efficiently produce high-quality fruit and vegetables for processing or fresh market sales. Due to the smaller acreage of these crops compared to major field crops, fewer herbicides are registered for use in fruit and vegetable crops than for field crops. Each year, new herbicides are evaluated under Arkansas growing conditions with the objective of improving the herbicide technology for the grower, processor, and ultimately the consumer. This report includes studies on the control of many of the more serious weed problems in important crops of this region, including snapbeans, spinach, southernpeas, watermelon, cantaloupe, summer squash, …

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Influence Of Nitrogen Rate And Sampling Date On Soil Analysis Values Of Highbush Blueberries, John R. Clark, Ronald W. Mcnew, Richard C. Maples Jun 1999

Influence Of Nitrogen Rate And Sampling Date On Soil Analysis Values Of Highbush Blueberries, John R. Clark, Ronald W. Mcnew, Richard C. Maples

AAES Research Reports and Research Bulletins

Three studies were conducted on nitrogen (N) fertilization effects on soil of highbush blueberries in Arkansas. Objectives included: 1) determination of varying N rate effects on the standard soil analysis variables, 2) determination of date of soil sampling effects on soil analyses, 3) evaluation of the interactions of N rate and time of sampling, and 4) determination of changes in soil content over years. This research was done in two of the more important highbush blueberry production areas in Arkansas: the Arkansas River Valley where blueberries are grown on sandy loam soils, and northwest Arkansas where production is more common …

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Horticultural Studies 1998, John R. Clark, Michael D. Richardson May 1999

Horticultural Studies 1998, John R. Clark, Michael D. Richardson

Arkansas Agricultural Experiment Station Research Series

Horticulture connects with people in many ways including an enhanced awareness concerning the importance of fruits and vegetables in our diet. The health benefits of such a diet is gaining wide recognition throughout the public and will likely provide tremendous opportunities for research, education and business development. Significant faculty additions and programmatic efforts were made to the university’s fruit and vegetable programs in 1998.

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Arkansas Cotton Variety And Strain Tests 1998, Fred M. Bourland, G. M. Palmer, J. M. Hornbeck, C. D. Capps Jr. Apr 1999

Arkansas Cotton Variety And Strain Tests 1998, Fred M. Bourland, G. M. Palmer, J. M. Hornbeck, C. D. Capps Jr.

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 in the major cotton growing areas in 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. The 1998 test had 58 entries (including 19 transgenic genotypes and 21 first-year entries), which were evaluated at six sites in eastern Arkansas. The presence of four transgenic and five first-year entries among the top 10 yielding …

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Arkansas Soil Fertility Studies 1998, Wayne Sabbe Mar 1999

Arkansas Soil Fertility Studies 1998, Wayne Sabbe

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.

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Herbicide Evaluation In Arkansas Rice, 1997, Ron Talbert, Ford Baldwin, David Gealy, Eric Webster, Tomilea Dillon, Lance Schmidt, Jeff Rutledge, Celeste Wheller, Leopoldo Estorninos Jr. Mar 1999

Herbicide Evaluation In Arkansas Rice, 1997, Ron Talbert, Ford Baldwin, David Gealy, Eric Webster, Tomilea Dillon, Lance Schmidt, Jeff Rutledge, Celeste Wheller, Leopoldo Estorninos Jr.

Arkansas Agricultural Experiment Station Research Series

Weed control is economically important for production of rice, a major crop in Arkansas. These findings summarize efforts of the team of Arkansas scientists working on weed control strategies for rice during 1997. Various technologies were evaluated in field studies at five locations involving the major weed problems and rice production systems used in the state. Results from these studies will add to the arsenal of weed control options for producers. Highlights include synergists and safeners for herbicides to aid in control of propanil-resistant barnyardgrass; herbicides and flooding techniques for control of red rice and other weeds; and the use …

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Farm Operator Satisfaction With Retail Pesticide Suppliers In The Arkansas Delta, Bruce L. Dixon, Damon Mckelvey, Travis Rogers, Frank L. Farmer, Daniel M. Settlage Feb 1999

Farm Operator Satisfaction With Retail Pesticide Suppliers In The Arkansas Delta, Bruce L. Dixon, Damon Mckelvey, Travis Rogers, Frank L. Farmer, Daniel M. Settlage

AAES Research Reports and Research Bulletins

Two hundred ninety farm operators in the three easternmost crop reporting districts in Arkansas responded to a mail survey in November 1996 about their preferences and satisfaction with retail pesticide suppliers.Results show most farmers are quite satisfied with their main retail pesticide supplier, although 55.5% of the farm operators used more than one retail pesticide supplier in 1996. Users of multiple suppliers were less satisfied with their suppliers than those using only one supplier. Availability of certain pesticides was the most frequently mentioned reason for using multiple suppliers. Several attributes were important in selecting the main supplier with reputation being …

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Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1997, Ron Talbert, Lance A. Schmidt, Jennifer A. Wells, Jeff S. Rutledge, Dolores A. Parker Feb 1999

Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1997, Ron Talbert, Lance A. Schmidt, Jennifer A. Wells, Jeff S. Rutledge, Dolores A. Parker

Arkansas Agricultural Experiment Station Research Series

Growers generally use herbicides to efficiently produce high-quality fruit and vegetables for processing or fresh market sales. Due to the smaller acreage of these crops compared to major field crops, fewer herbicides are registered for use in fruit and vegetable crops than for field crops. Each year, new herbicides are evaluated under Arkansas growing conditions with the objective of improving the herbicide technology for the grower, processor, and ultimately the consumer. This report includes studies on the control of many of the more serious weed problems in important crops of this region, including snapbeans, spinach, southern pea, watermelon, cantaloupe, tomato, …

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B.R. Wells Rice Research Studies 1997, R. J. Norman, T. H. Johnston Jan 1999

B.R. Wells Rice Research Studies 1997, R. J. Norman, T. H. Johnston

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

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Agricultural Water Management In The Missippi Delta Region Of Arkansas, H. Don Scott, James A. Ferguson, Linda Hanson, Todd Fugitt, Earl Smith Aug 1998

Agricultural Water Management In The Missippi Delta Region Of Arkansas, H. Don Scott, James A. Ferguson, Linda Hanson, Todd Fugitt, Earl Smith

AAES Research Reports and Research Bulletins

Agriculture is the largest use of soil and water resources in eastern Arkansas. This bulletin summarized the recent historical use of soil and water by agriculture and the impact of irrigation on yields of rice, soybeans and cotton. The experiments conducted in the field to quantitatively schedule irrigations of crops are summarized. The results show the close relationship between the irrigation of crops and the extraction of water from the Alluvial Aquifer. The implications of this relationaship for the future are discussed.

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Arkansas Soil Fertility Studies 1997, Wayne E. Sabbe Apr 1998

Arkansas Soil Fertility Studies 1997, Wayne E. Sabbe

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

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An Economic Assessment Of The Myanmar Rice Sector: Current Developments And Prospects, Kenneth B. Young, Gail L. Cramer, Eric J. Wailes Feb 1998

An Economic Assessment Of The Myanmar Rice Sector: Current Developments And Prospects, Kenneth B. Young, Gail L. Cramer, Eric J. Wailes

AAES Research Reports and Research Bulletins

In this study, the Myanmar rice economy is described in the context of the current political situation and state of national economic development. The forces that are changing rice production and exports are identified; however, the rate of development involves a complex integration of government intervention and politics, as well as availability of resources. Probable scenarios for rice production and export are projected based on recent growth trends and expected infrastructure development. The Arkansas Global Rice Model is used to integrate the Myanmar rice sector with the global rice market in developing projections.

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Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1996, Ron Talbert, Lance A. Schmidt, Nilda R. Burgos, Jennifer A. Johnson, Joe K. Curless, Jason K. Norsworthy Nov 1997

Field Evaluation Of Herbicides On Small Fruit, Vegetable, And Ornamental Crops, 1996, Ron Talbert, Lance A. Schmidt, Nilda R. Burgos, Jennifer A. Johnson, Joe K. Curless, Jason K. Norsworthy

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

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Herbicide Evaluation In Arkansas Rice, 1996, Eric Webster, Ron Talbert, Ford Baldwin, David Gealy, Tomilea Dillon, Jason Norsworthy, Lance Schmidt, Dwayne Beaty Oct 1997

Herbicide Evaluation In Arkansas Rice, 1996, Eric Webster, Ron Talbert, Ford Baldwin, David Gealy, Tomilea Dillon, Jason Norsworthy, Lance Schmidt, Dwayne Beaty

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

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The Mercosur Rice Economy, Ralph Bierlen, Eric J. Wailes, Gail L. Cramer Jul 1997

The Mercosur Rice Economy, Ralph Bierlen, Eric J. Wailes, Gail L. Cramer

AAES Research Reports and Research Bulletins

There has been growing interest among nations in the western hemisphere in preferential trading arrangements (Taylor et al., 1995; Schuh and Junguita, 1993). Since 1990, 33 regional agreements have been registered with the World Trade Organization — the supranational organization that sets the rules for international trade (Blandford, 1995). One of the most important of these trading arrangements is the Mercado Comun del Sur (Common Market of the South), commonly referred to by its acronym, the MERCOSUR. (See Table 1 for a definition of acronyms and technical terms.) The MERCOSUR is a customs union whose member nations are Argentina, Brazil, …

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B.R. Wells Rice Research Studies 1996, R. J. Norman, T. H. Johnston Jul 1997

B.R. Wells Rice Research Studies 1996, R. J. Norman, T. H. Johnston

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

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Yield, Earliness And Fiber Strength Of Blends Of Cotton (Gossypium Hirsutum L.) Cultivars, J. S. Mcconnell, F. M. Bourland, W. H. Baker, B. S. Frizzell Apr 1997

Yield, Earliness And Fiber Strength Of Blends Of Cotton (Gossypium Hirsutum L.) Cultivars, J. S. Mcconnell, F. M. Bourland, W. H. Baker, B. S. Frizzell

AAES Research Reports and Research Bulletins

Pricing of cotton (Gossypium hirsutum L.) has been determined primarily by fiber length and grade, which were manually determined. Implementation of the high volume instrument (HVI) cotton classing system in 1991 allowed other fiber quality parameters to be objectively and rapidly measured (Deussen, 1989). One quality parameter added to the pricing structure by the advent of HVI in determining the value of ginned lint is fiber strength (Table 1). Open-end spinning, a new technology being utilized by the textile industry, requires high-strength cotton fibers (>25 g/tex) for manufacture of yarns. As this technology becomes more widely used, cotton with …

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Arkansas Soil Fertility Studies 1996, Wayne E. Sabbe Apr 1997

Arkansas Soil Fertility Studies 1996, Wayne E. Sabbe

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

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Effect Of Media Constituents On In Vitro Culturing Of Cowpea (Vigna Unguiculata) Shoot Tip And Leaf Disk Explants, Mohanjeet S. Brar, Edwin J. Anderson, Teddy E. Morelock, Ronald W. Mcnew Jan 1997

Effect Of Media Constituents On In Vitro Culturing Of Cowpea (Vigna Unguiculata) Shoot Tip And Leaf Disk Explants, Mohanjeet S. Brar, Edwin J. Anderson, Teddy E. Morelock, Ronald W. Mcnew

Journal of the Arkansas Academy of Science

Cowpea is an important legume food crop that is commonly grown in Arkansas and numerous other southern states. The application of biotechnological approaches for the improvement of U.S. cowpea genotypes is currently not possible due to the lack of a regeneration and transformation system. Therefore, the first priority of our research efforts is the development of a plant regeneration system that will facilitate plant transformation studies. In an effort to optimize the media requirements for tissue culturing cowpea, we evaluated the in vitro response of shoot tip and leaf disk explants to various levels of Murashige and Skoog (MS) macro …

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Factors Affecting Transformation Efficiency Of Poplar Hybrid Line Nc5331 By Agrobacterium Tumefaciens, Xin Y. Li, Feng H. Huang, Edward E. Gbur Jr. Jan 1997

Factors Affecting Transformation Efficiency Of Poplar Hybrid Line Nc5331 By Agrobacterium Tumefaciens, Xin Y. Li, Feng H. Huang, Edward E. Gbur Jr.

Journal of the Arkansas Academy of Science

Acetosyringone, pH, and glucose, which may affect Agrobacterium-mediated gene transformation to poplar hybrid line NC5331, were investigated in an attempt to raise the gene transfer efficiency. The Agrobacterium tumefaciens strain used harbored disarmed vector (pMON9749) carrying a bet-glucuronidase gene and a kanamycin resistant marker. With the addition of acetosyringone at 25 to 75 MuM, the transformation efficiency was significantly enhanced, but dependent on pH. Acetosyringone required a pH above 5.8 to achieve an efficient gene transfer and failed to enhance the transformation at lower pH. However, with addition of both acetosyringone and glucose, the transformation was not affected by pH. …

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Arkansas Rice Research Studies 1995, R. J. Norman, B. R. Wells Aug 1996

Arkansas Rice Research Studies 1995, R. J. Norman, B. R. Wells

Arkansas Agricultural Experiment Station Research Series

The research reports in this publication represent one year of results; therefore, these results should not be used as a basis for long-term recommendations. Several research reports in this publication dealing with soil fertility also appear in Arkansas Soil Fertility Studies 1995 , Arkansas Agricultural Experiment Station Research Series 450. This duplication is the result of the overlap in research coverage between the two series and our effort to inform Arkansas rice producers of all the research being conducted with funds from the rice check-off. Use of products and trade names in any of the research reports of this publication …

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Arkansas Rice Research Studies 1994, B. R. Wells Jul 1995

Arkansas Rice Research Studies 1994, B. R. Wells

Arkansas Agricultural Experiment Station Research Series

The research reports in this publication represent one year of results; therefore, these results should not be used as a basis for longterm recommendations. Several research reports in this publication dealing with soil fertility also appear in Arkansas Soil Fertility Studies 1994, Arkansas Agricultural Experiment Station Research Series 443. This duplication is the result of the overlap in research coverage between the two series and our effort to inform Arkansas rice producers of all the research being conducted with funds from the rice check-off.

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Arkansas Rice Research Studies 1993, B. R. Wells Jun 1994

Arkansas Rice Research Studies 1993, B. R. Wells

Arkansas Agricultural Experiment Station Research Series

The research reports in this publication represent one year of results; therefore, these results should not be used as a basis for longterm recommendations. Several research reports in this publication dealing with soU fertility also appear in Arkansas Soil Fertility Studies 1993, Arkansas Agricultural Experiment Station Research Series 436. This duplication is the result of the overlap in research coverage between the two series and our effort to inform Arkansas rice producers of all the research being conducted with funds from the rice check-off.

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Distance Of Interference Of Red Rice (Orya Sativa) In Rice (O. Sativa), Sam L. Kwon, Roy J. Smith Jr., Ronald E. Talbert Jan 1994

Distance Of Interference Of Red Rice (Orya Sativa) In Rice (O. Sativa), Sam L. Kwon, Roy J. Smith Jr., Ronald E. Talbert

Journal of the Arkansas Academy of Science

Three rice cultivars were grown to determine the distance at which red rice affects growth and grain yield. Red rice reduced grain yield of Lemont when rice plants grew within 71 and 53 cm of red rice in 1986 and 1988, respectively. Grain yield of Newbonnet was reduced when grown within 53 cm of red rice in both years. Grain yield of Tebonnet was reduced when grown within 53 and 36 cm of red rice in 1986 and 1988, respectively. Grain yield reduction in influenced areas averaged 35, 26 and 21% for Lemont, Newbonnet, and Tebonnet, respectively. As the distance …

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Arkansas Rice Research Studies 1992, B. R. Wells Jun 1993

Arkansas Rice Research Studies 1992, B. R. Wells

Arkansas Agricultural Experiment Station Research Series

The research reports in this publication represent one year of results; therefore, these results should not be used as a basis for longterm recommendations. Several research reports in this publication dealing with soil fertility also appear in Arkansas Soil Fertility Studies 1992, Arkansas Agricultural Experiment Station Research Series 425. This duplication is the result of the overlap in research coverage between the two series and our effort to inform Arkansas rice producers of all the research being conducted with funds from the rice check-off.

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Effect Of Light, Nitrogen, And Water Management On Rice (Oryza Sativa) Tolerance To Fenoxaprop, Roy J. Smith Jr., Aurora M. Baltazar, Paolo Nastasi Jan 1993

Effect Of Light, Nitrogen, And Water Management On Rice (Oryza Sativa) Tolerance To Fenoxaprop, Roy J. Smith Jr., Aurora M. Baltazar, Paolo Nastasi

Journal of the Arkansas Academy of Science

The effect of light intensity, nitrogen (N), and water management on rice (Oryza sativa cv. 'Newbonnet' and 'Lemont') tolerance to fenoxaprop {(+)-2-[4[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acid} was determined in two field studies at the Rice Research and Extension Center, Stuttgart, AR, in 1988 and 1989. In one study, 'Newbonnet' rice was treated with 0.22 kgai ha-1fenoxaprop at 0, 1, 3, 5, 7, 10, 14, and 28 days after N application and flooding. Moderate to severe foliar chlorosis, stunting, and stand and yield reductions occurred when fenoxaprop was applied within 7 days after N application and flooding. None to slight injury or yield reduction …

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Role Of Endophytes In Tall Fescue, E. L. Piper, C. P. West Jan 1993

Role Of Endophytes In Tall Fescue, E. L. Piper, C. P. West

Journal of the Arkansas Academy of Science

Tall fescue (Festuca arundinacea Schreb.) is the most commonly grown cool season grass used for pastures in Arkansas. Most tall fescue contains a fungal endophyte (Acremonium coenophialum Morgan-Jones & Gams), which causes fescue toxicosis in livestock and costs cattle producers millions of dollars annually in lost production. Endophyte presence is known to reduce wild mammal populations in areas where tall fescue is prevalent. The endophyte spends its entire life cycle within the plant and is transmitted through the seed. The association is mutualistic with the plant providing nutrients for the endophyte and the endophyte conferring drought, insect, and nematode resistance …

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Arkansas Rice Research Studies 1991, B. R. Wells Jun 1992

Arkansas Rice Research Studies 1991, B. R. Wells

Arkansas Agricultural Experiment Station Research Series

The research reports in this publication represent one year of results; therefore, these results should not be used as a basis for longterm recommendations. Several research reports in this publication dealing with soil fertility also appear in Arkansas Soil Fertility Studies 1991, Arkansas Agricultural Experiment Station Research Series 421. This duplication is the result of the overlap in research coverage between the two series and our effort to inform Arkansas rice producers of all the research being conducted with funds from the rice check-off.

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Arkansas Soil Fertility Studies 1991, Wayne E. Sabbe May 1992

Arkansas Soil Fertility Studies 1991, Wayne E. Sabbe

Arkansas Agricultural Experiment Station Research Series

Contained within this publication are progress reports on the specific aspects of the soil fertility program at the University of Arkansas in 1991. In most instances, the reports are not final reports, but they may contain data from several years. Further details on each report can be obtained from the respective project leaders.

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