Horticulture Commons^™

Baseline Sensitivity To Demethylation Inhibitors Fungicides In Cercospora Spp. And Corynespora Spp. In Arkansas Soybeans, Evan Buckner, Alejandro Rojas

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

Cercospora spp. and Corynespora spp. are two common foliar fungal pathogens in Arkansas and other soybean-producing areas. Two primary diseases caused by Cercospora spp. are Cercospora Leaf Blight (CLB, caused mainly by C. kikuchii) and Frogeye Leaf Spot (C. sojina). Over time, many fungicides used to combat these diseases have become ineffective as the pathogens have developed a resistance to them. The class of the fungicide in question is Triazoles [Demethylation Inhibitors (DMI)–FRAC 3]. Fifteen isolates consisting of Corynespora cassiicola, Cercospora sojina, and Cercospora flagellaris were tested to determine baseline sensitivities using serial dilutions (0, 0.01, 1, 10, 50 mg/L) …

Seed-Shattering Phenology At Soybean Harvest Of Economically Important Weeds In Multiple Regions Of The United States. Part 2: Grass Species, Lauren M. Schwartz-Lazaro, Lovreet S. Shergill, Jeffrey A. Evans, Muthukumar V. Bagavathiannan, Shawn C. Beam, Mandy D. Bish, Jason A. Bond, Kevin W. Bradley, William S. Curran, Adam S. Davis, Wesley J. Everman, Michael L. Flessner, Steven C. Haring, Nicholas R. Jordan, Nicholas E. Korres, John L. Lindquist, Jason K. Norsworthy, Tameka L. Sanders, Larry E. Steckel, Mark J. Vangessel, Blake Young, Steven B. Mirsky

Department of Agronomy and Horticulture: Faculty Publications

Seed shatter is an important weediness trait on which the efficacy of harvest weed seed control (HWSC) depends. The level of seed shatter in a species is likely influenced by agroecological and environmental factors. In 2016 and 2017, we assessed seed shatter of eight economically important grass weed species in soybean [Glycine max (L.) Merr.] from crop physiological maturity to 4 wk after maturity at multiple sites spread across 11 states in the southern, northern, and mid-Atlantic United States. From soybean maturity to 4 wk after maturity, cumulative percent seed shatter was lowest in the southern U.S. regions and increased …

Coal Char Effects On Soil Chemical Properties And Maize Yields In Semi-Arid Region, Dinesh Panday, Maysoon M. Mikha, Xiaocun Sun, Bijesh Maharjan

Department of Agronomy and Horticulture: Faculty Publications

Soil amendments with high carbon (C) content can be effective in semi-arid regions where soils are characterized by low C. A field study was conducted in 2016–2018 to evaluate the effect of char on soil chemical properties and irrigated maize (Zea mays L.) yields in sandy loam fertilized with urea or composted manure. Carbon-rich char used was a product of coal combustion residue from a local factory in western Nebraska. The experiment was arranged in a split-plot randomized complete block design in four replications with char (0, 6.7, 13.4, 20.1, and 26.8Mg C ha⁻¹) as main and …

A Comparison Of Media To Determine Optimal Growth In Aquaponics: Prg Virtual Showcase January 2021, Rachel L. Fogle, Andrea Nagy, Claribel Asare, Steven Berry, Jordan Brown, Aquila Durham-Lewis

Harrisburg University Presidential Research Grants

No abstract provided.

Letter From The Dean, Deacue Fields

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

No abstract provided.

James B Beard: The Father Of Contemporary Turfgrass Science, G.K. Stahnke, P.E. Rieke, Robert C. Shearman, Roch E. Gaussoin, David Kopec

Department of Agronomy and Horticulture: Faculty Publications

James B Beard (24 Sept 1935 to 8 May 2018) can rightly be considered the “Father” of contemporary turfgrass science. During his career, he was known for setting a standard that provided the foundation for turfgrass science through his thorough approach to research, teaching, mentoring and communications. The books he published outlined a vision for an evolving scientific discipline. He trained and mentored >45 domestic and international doctoral and master students and numerous post-doctoral trainees, who in turn continued to raise the quality of contemporary turfgrass science in the USA and internationally. He led the effort to change the name …

Contents, Discovery Editors

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

No abstract provided.

Letter From The Faculty Editor, Beth Kegley

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 22 2021, Several Authors

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

No abstract provided.

Featured Faculty Mentor And Student Explore The Dynamics Of This Research Relationship, Alejandro Rojas, Evan Buckner

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

No abstract provided.

2021 Standard-Size Triploid Watermelon Variety Evaluation In Indiana, Wenjing Guan, Dan Egel, Dennis Nowaskie, Dean Haseman

Midwest Vegetable Trial Reports

A total of 6,700 acres of watermelons were planted in Indiana in 2020 with a production value of $46.9 million (USDA 2021). Production in Indiana in 2020 was increased from 6,500 acres and $35.3 million production value in 2019. Primary watermelon type grown in Indiana is standard-sized triploid watermelons. Variety selection based on yield, disease resistance and fruit quality is a key decision in watermelon production. The objective of this study is to provide watermelon producers and seed companies with the updated information on the performance of watermelon varieties grown in Indiana.

Cold Climate Grape Cultivar`S Physiological And Gene Expression Responses To Low And Freezing Temperatures, Turhan Yilmaz

Electronic Theses and Dissertations

Grapevine (Vitis Vinifera), widely cultivated in the world and USA, is a significant and valuable fruit crop. After cold climate grapevine cultivars were released by breeding programs in the 1990s, the production of grapes expanded in the Northern cold climate region of the US. The objectives of this study were to test 1) freezing tolerance and chilling fulfillment, 2) the effect of pruning methods on yield and winter survival, and 3) transcriptomic changes in natural and controlled chilling conditions during chilling requirement fulfillment in cold climate grapevine cultivars. Pruning methods, spur (SP), short cane (SC), and spur plus short cane …

Arkansas Corn And Grain Sorghum Performance Tests 2020, J. F. Carlin, R. D. Bond, R. B. Morgan

Arkansas Agricultural Experiment Station Research Series

Corn and grain sorghum performance tests are conducted each year in Arkansas by the University of Arkansas System 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.

The 2020 corn performance tests contained 85 hybrids and were conducted at the Northeast Research and Extension Center (NEREC) at Keiser, the Lon Mann Cotton Research Station (LMCRS) near Marianna, the Bell Farming Company (BFC) near Des Arc, the Pine Tree Research Station (PTRS) near Colt, the Rohwer Research Station (RRS) near Rohwer, and the Rice …

Arkansas Soybean Performance Tests 2020, J. F. Carlin, R. D. Bond, R. B. Morgan

Arkansas Agricultural Experiment Station Research Series

Soybean variety and strain performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture’s Arkansas Crop Variety Improvement Program. The tests provide information to companies developing varieties and/or marketing seed within the State, and aid the Arkansas Cooperative Extension Service in formulating variety recommendations for soybean producers.

Efficacy And Mechanism Of Acs811 In Tomato Immune Responses, Layne Ellen Harris

Theses and Dissertations--Plant and Soil Sciences

Biologicals are increasingly becoming an important part of sustainable integrated pest management in agricultural crop production and encompass a wide variety of products with varying degrees of efficacy and available research data. As biologicals become more integrated into commercial production systems, it is critical to rigorously evaluate biological product efficacy and mode(s) of action in crops. The better that biologicals are understood in terms of effective application, integration into commercial programs, and their specific mechanisms in crop growth and protection, then the greater the opportunity for increasing yields and food security.

ACS811 is a microbial fermentation-based biological product from Alltech …

Continuous In Situ Soil Nitrate Sensors: The Importance Of High-Resolution Measurements Across Time And A Comparison With Salt Extraction-Based Methods, Yunjiao Zhu, Yuncong Chen, Md. Azahar Ali, Liang Dong, Xinran Wang, Sotirios V. Archontoulis, James Schnable, Michael J. Castellano

Department of Agronomy and Horticulture: Faculty Publications

Soil NO₃^– affects microbial processes, plant productivity, and environmental N losses. However, the ability to measure soil NO₃^– is limited by labor-intensive sampling and laboratory analyses. Hence, temporal variation in soil solution NO₃^– concentration is poorly understood. We evaluated a new potentiometric sensor that continuously measures soil solution NO₃^– concentration with unprecedented specificity due to a novel membrane that serves as a barrier to interfering anions. First, we compared sensor and salt extraction-based measurements of soil NO₃^– in well-controlled laboratory conditions. Second, using 60 d of in situ soil NO …

Colored Sweet Bell And Tapered Pepper Cultivar Evaluation For High Tunnel Production In West-Central Indiana, 2020, Petrus Langenhoven

Midwest Vegetable Trial Reports

Sweet colored pepper is a very popular crop among small and medium-sized farm enterprises in Indiana. Especially farms selling to specialty markets or doing direct-to-consumer marketing. Growers always wonder which variety will work best for them. They might ask will this variety perform in my high tunnel. This paper report on a sweet pepper variety trial that was conducted during 2020 at the Purdue Student Farm, West Lafayette IN. Overall, most varieties performed well. Bell pepper variety Flavorburst was again a top contender. Midas (yellow bell pepper), however, was the best performing bell pepper variety. Tapered pepper varieties Carmen (red) …

Effects Of Using Low Tunnel And Grafted Plants For Watermelon Production Under Low Temperature Stress In Indiana, Wenjing Guan

Midwest Vegetable Trial Reports

This study evaluated the effect of using low tunnel and grafted plants for early-season watermelon production in Indiana. Results of the study indicated that grafted seedless watermelon plants can better tolerate cold stress in the early watermelon season compared to non-grafted seedless watermelon plants. Grafted plants with ‘Camelforce’ rootstock had better old tolerance than that of ‘Carolina Strong Back’ rootstock. The effect of using low tunnels to improve plant survival rate under extreme weather conditions is limited, which depend on temperate stress and cold tolerance of the plants.

2021 Personal-Size Triploid Watermelon Variety Evaluation In Indiana, Wenjing Guan, Dan Egel, Dennis Nowaskie, Dean Haseman

Midwest Vegetable Trial Reports

Personal-size triploid watermelons are usually defined as weighing 4.4 to 8.8 lbs (Vinson et al., 2010). The ideal size is about 6-7 lbs. They open have firm flesh and high lycopene content and attract certain consumers. This variety trial included 12 personal-size triploid watermelons. Yield and fruit quality parameters were evaluated.

Abrasive Weeding As A Vehicle For Precision Fertilizer Management In Organic Vegetable Production, Tran Kim Ngan Luong, Frank Forcella, Sharon Clay, Michael S. Douglass, Samuel E. Wortman

Department of Agronomy and Horticulture: Faculty Publications

Abrasive weeding is a nonchemical weed control tactic that uses small, gritty materials propelled with compressed air to destroy weed seedlings. Organic fertilizers have been used successfully as abrasive grits to control weeds, but the goal for this study was to explore the effects of fertilizer grit, application rates, and background soil fertility on weeds, plant available nitrogen (N) uptake, and crop yield. Field trials were conducted in organic ‘Carmen’ sweet red pepper (Capsicum annuum) and organic ‘Gypsy’ broccoli (Brassica oleracea var. italica) and treatments included organic fertilizer grit (8N–0.9P–3.3K vs. 3N–3.1P–3.3K), grit application rates (low …