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Agronomy and Crop Sciences

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

2004

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Full-Text Articles in Life Sciences

Contents, Discovery Editors Jan 2004

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.


Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 5 2004, Several Authors Jan 2004

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 5 2004, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.


Letter From The Dean, Gregory J. Weidemann Jan 2004

Letter From The Dean, Gregory J. Weidemann

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.


Evaluation Of Post-Harvest Disease Resistance In Blackberry Genotypes, John-Paul Kidd, John R. Clark, Patrick Fenn, Barbara Smith Jan 2004

Evaluation Of Post-Harvest Disease Resistance In Blackberry Genotypes, John-Paul Kidd, John R. Clark, Patrick Fenn, Barbara Smith

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Forty-nine blackberry genotypes (19 cultivars and 30 breeding selections) were evaluated for post-harvest fruit-rot resistance in June and July 2003. Fully mature, undamaged berries were harvested on two dates for each genotype at the University of Arkansas Fruit Substation, Clarksville. After transporting in chilled coolers back to the Plant Pathology Department in Fayetteville, two replications of 10 berries of each genotype were placed in a high-humidity chamber for 3 d (21-23°C; 16-h daylength). This provided a total of four replications for each entry across the two harvest dates. Natural inoculum from the field provided the post-harvest pathogens, and no additional …


Characterizing Bean Pod Rot In Arkansas And Missouri, Jeremy H. Taylor, Craig S. Rothrock Jan 2004

Characterizing Bean Pod Rot In Arkansas And Missouri, Jeremy H. Taylor, Craig S. Rothrock

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Green beans are an important crop grown for processing in both Arkansas and Missouri. Green beans are harvested mechanically using non-selective picking fingers. Harvested beans are then transported in bulk to processing plants that are located at various locations throughout the midSouth. Thus, the crop is managed for high quality, avoiding pod blemishes caused by insects and diseases. One of the consistent quality problems that affect Arkansas and Missouri green bean crops is pod rot. Two of the causal agents of pod rot that have been reported by researchers and vegetable companies alike are Pythium aphanidermatum and an unidentified Phytophthora …


Instructions For Authors, Discovery Editors Jan 2004

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.


Propagation Of Thornless Blackberries Utilizing Adventitious Shoots From Root Cuttings, Ellen Thompson, John R. Clark, Curt C. Rom Jan 2004

Propagation Of Thornless Blackberries Utilizing Adventitious Shoots From Root Cuttings, Ellen Thompson, John R. Clark, Curt C. Rom

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Studies were conducted in early 2003 to determine the effect of root source and length on yield of adventitious shoots from root cuttings and on subsequent plant yield for University of Arkansasdeveloped thornless blackberries. In the first study, roots from ‘Arapaho’ and ‘Apache’ plants grown in an aboveground bed containing commercial potting soil were compared to field-grown roots. Bed-grown roots averaged 6.9 shoots per 15 cm root cutting while field grown roots averaged 3.4. ‘Apache’ produced more shoots/root cutting compared to Arapaho, (5.9 vs. 4.4 shoots/root cutting, respectively). In a comparison of 15- vs. 30-cm-long root cuttings of ‘Apache’, ‘Arapaho’, …


A Comparison Of Recently Introduced Instruments For Measuring Rice Flour Viscosity, Nettie Mathis, Linfeng Wang, Terry J. Siebenmorgen Jan 2004

A Comparison Of Recently Introduced Instruments For Measuring Rice Flour Viscosity, Nettie Mathis, Linfeng Wang, Terry J. Siebenmorgen

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

The Rapid Visco-Analyser (RVA) and the Micro Visco-Amylograph (MVA) were compared in measuring the viscosity properties of rice flours. A total of 72 rice samples were procured from three cultivars harvested at two locations and three moisture contents and separated into thin, medium, and thick kernel-thickness fractions. A fast and a slow heating rate was used in the procedure for both instruments. Cultivar, kernel thickness, and harvest location affected rice viscosity. The RVA viscosity profiles using a fast heating rate were best correlated with those of the MVA using a slow heating rate. The RVA slow heating rate resulted in …


Effects Of Vegetation Removal On Native Soil Quality In Eastern Arkansas, Lorena Moreno, Kristofor R. Brye Jan 2004

Effects Of Vegetation Removal On Native Soil Quality In Eastern Arkansas, Lorena Moreno, Kristofor R. Brye

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Aboveground vegetation removal practices, such as cutting and baling and burning, can both positively and negatively affect a prairie ecosystem. Burning can stimulate growth and species diversity, but removing vegetation and the nutrients it contains without equal replenishment of those nutrients could cause a steady decline in available soil nutrients. The objective of this study was to evaluate the effects of vegetation removal techniques in a native tallgrass prairie in eastcentral Arkansas. Soil samples were collected from the top 10 cm in each soil mapping unit that existed in each of three prairie areas that differed by the amount of …


Soybean Seed Yield And Quality Under An Ultra-Short-Season Production System, Lorena Moreno, Tetsuaki Ishibashi, Pengyin Chen, Patrick Fenn Jan 2004

Soybean Seed Yield And Quality Under An Ultra-Short-Season Production System, Lorena Moreno, Tetsuaki Ishibashi, Pengyin Chen, Patrick Fenn

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Drought is a major yield-limiting factor for soybean [Glycine max.] in the southern U.S.A. The ultra-short-season production system (USSPS), which uses maturity group (MG) 00 through I cultivars planted in April in Arkansas, may minimize severe yield reduction by drought since this system allows growers to harvest soybeans before severe drought occurs. The objective of this study was to evaluate yield potential and seed quality of Northern MG 00 through I soybean cultivars in a mid-South environment. Average yields of MG 00, 0 and I were 2954, 3585, and 3782 kg ha-1, respectively, under irrigated conditions. Average yield under dryland …