Arkansas Soybean Research Studies 2018, 2019 University of Arkansas, Fayetteville
Arkansas Soybean Research Studies 2018, Jeremy Ross
Arkansas Agricultural Experiment Station Research Series
Arkansas is the leading soybean-producing state in the mid-southern United States. Arkansas ranked 11th in soybean production in 2018 when compared to the other soybean-producing states in the U.S. The state represents 3.7% of the total U.S. soybean production and 3.7% of the total acres planted in soybean in 2018. The 2018 state soybean average was 50.5 bushels per acre, half a bushel lower than the state record set in 2017. The top five soybean-producing counties in 2018 were Mississippi, Desha, Phillips, Arkansas, and Poinsett Counties (Table 1). These five counties accounted for 33.7% of soybean production in Arkansas in …
Arkansas Soybean Performance Tests 2019, 2019 University of Arkansas, Fayetteville
Arkansas Soybean Performance Tests 2019, J. F. Carlin, R. D. Bond, J. A. Still
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.
Effects Of Soil Amendments On The Germination And Health Of Panicum Virgatum L. Grown On Soils Polluted By Copper Mining Activities, 2019 Northern Michigan University
Effects Of Soil Amendments On The Germination And Health Of Panicum Virgatum L. Grown On Soils Polluted By Copper Mining Activities, Brandon Caltrider
Conspectus Borealis
No abstract provided.
Investigating Dicamba Tolerance In Grapevine Cultivars Through Drift Simulation Assays, 2019 Missouri State University
Investigating Dicamba Tolerance In Grapevine Cultivars Through Drift Simulation Assays, Bryce David Bentley
MSU Graduate Theses
Dicamba is a synthetic auxin herbicide which acts systematically and selectively controls broadleaf plants and has become increasingly popular in the past several years for weed control in commercial agriculture following widespread adoption of dicamba-resistant, transgenic soybean and cotton. Dicamba may be better acknowledged by growers of specialty crops, like grapes, for its capacity to drift miles away from the site of application and deposit on fields, remaining potent enough to cause crop damage and yield loss to vulnerable plants. Grapes are among the most susceptible agronomic crops to dicamba drift, showing visible injury at rates less than 1% of …
Effects Of Different Water And Nitrogen Regimens On Yield Of Winter Wheat Produced In Nebraska, 2019 University of Nebraska - Lincoln
Effects Of Different Water And Nitrogen Regimens On Yield Of Winter Wheat Produced In Nebraska, Joseph Emory Davis
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Wheat is the 3rd most prominent crop in the USA and approximately 50% is exported annually. Nebraska wheat production is 11th in the country, and it plays a major role in the state's agricultural economy, especially in western NE. Generally, wheat is grown under dryland conditions and the region grows much more wheat on unirrigated land than it does on irrigated. However, deficit irrigation has shown great value in producing high yielding wheat with much less water than needed for other crops. Finding new ways to leverage irrigation in wheat production may help address the need to produce food …
Integration Of Cover Crops Into Midwest Corn-Soybean Cropping Systems And Potential For Weed Suppression, 2019 University of Nebraska-Lincoln
Integration Of Cover Crops Into Midwest Corn-Soybean Cropping Systems And Potential For Weed Suppression, Joshua S. Wehrbein
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Cover crops have potential to provide benefits to agricultural systems, such as improved soil productivity, nutrient scavenging, weed suppression, and livestock forage. There are several challenges associated with cover crop integration into traditional Midwest corn-soybean cropping systems. One of these challenges is timely establishment in the fall, which is limited by the relatively late harvest of corn and soybean. Cover crop effectiveness is related to the amount of biomass produced, thus maximizing the growth period in the fall is desired. To address this challenge, we evaluated the potential to utilize early-season soybean maturity groups (MGs) to allow for earlier soybean …
A Survey Of Soil Properties Affecting Vegetation Establishment Along Nebraska Highways, 2019 University of Nebraska-Lincoln
A Survey Of Soil Properties Affecting Vegetation Establishment Along Nebraska Highways, Shad D. Mills
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Vegetation along roadsides is important to prevent soil erosion, provide habitat and filter water running off the road. Along some highways in Nebraska vegetation does not readily establish and persist. It is thought that sodium and bulk density issues are the driving factor behind the lack of vegetation. After a construction project, the shoulder is seeded into the compacted soil, and salts can accumulate in the soil due to deicing agents being used during the winter. The purpose of our study was to determine if the bulk density and sodium are the driving factors of the vegetation cover. We also …
A Seascape Genetics Approach To Studying Genetic Differentiation In The Bull Kelp Nereocystis Luetkeana, 2019 University of Wisconsin-Milwaukee
A Seascape Genetics Approach To Studying Genetic Differentiation In The Bull Kelp Nereocystis Luetkeana, Lily G. Gierke
Theses and Dissertations
The brown alga Nereocystis luetkeana is a foundation species found from Alaska to California. In the Salish Sea, N. luetkeana is declining, but little is known about its population structure. We explored N. luetkeana 1) allelic dissimilarity and richness using seven microsatellite markers, and 2) tested models of gene flow in the Salish Sea using a hydrodynamic transport model. Our results suggest that the N. luetkeana distribution is comprised of four genetic co-ancestry groups that are geographically coherent, apart from the separation of the Strait of Georgia/Puget Sound by the Strait of Juan de Fuca. Our model supported that environmental …
California Vascular Plant Families: A Munz, Hickman, & Baldwin Nomenclator, 2019 Humboldt State University
California Vascular Plant Families: A Munz, Hickman, & Baldwin Nomenclator, James P. Smith Jr
Botanical Studies
No abstract provided.
Vines In The Neotropics: Phylogenomics, Biogeography And Systematics In Passion Flowers (Passiflora Subgenus Decaloba Section Decaloba), 2019 University of Missouri-St. Louis
Vines In The Neotropics: Phylogenomics, Biogeography And Systematics In Passion Flowers (Passiflora Subgenus Decaloba Section Decaloba), Serena Acha
Dissertations
With 600 species, Passiflora is a large, morphologically complex and broadly distributed genus in Passifloraceae that represents a major challenge to scientists interested in understanding the evolutionary history of tropical vines. Passiflora has been divided into subgenera, super sections and sections. One of the most enigmatic and species-rich (~120 spp.) groups in Passiflora is section Decaloba, which occurs in the Neotropics and is particularly diverse in Andean montane forests. In this study, we used phylogenomic and population genomic approaches to investigate the evolutionary history, biologeography, species boundaries, and taxonomy of Passiflora section Decaloba. We sampled herbarium specimens, extracted …
Rare, Endangered, And Threatened Vascular Plants Of North America: A Bibliography, 2019 Humboldt State University
Rare, Endangered, And Threatened Vascular Plants Of North America: A Bibliography, James P. Smith Jr
Botanical Studies
No abstract provided.
The Families And Genera Of Vascular Plants Of The Conterminous United States, 2019 Humboldt State University
The Families And Genera Of Vascular Plants Of The Conterminous United States, James P. Smith Jr
Botanical Studies
No abstract provided.
The 18O-Signal Transfer From Water Vapour To Leaf Water And Assimilates Varies Among Plant Species And Growth Forms, 2019 Swiss Federal Institute for Forest, Snow and Landscape Research
The 18O-Signal Transfer From Water Vapour To Leaf Water And Assimilates Varies Among Plant Species And Growth Forms, Marco M. Lehmann, Gregory R. Goldsmith, Cathleen Mirande-Ney, Rosemarie B. Weigt, Leonie Schönbeck, Ansgar Kahmen, Arthur Gessler, Rolf T.W. Siegwolf, Matthias Saurer
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
The 18O signature of atmospheric water vapour (δ18OV) is known to be transferred via leaf water to assimilates. It remains, however, unclear how the 18O‐signal transfer differs among plant species and growth forms. We performed a 9‐hr greenhouse fog experiment (relative humidity ≥ 98%) with 18O‐depleted water vapour (−106.7‰) on 140 plant species of eight different growth forms during daytime. We quantified the 18O‐signal transfer by calculating the mean residence time of O in leaf water (MRTLW) and sugars (MRTSugars) and related it to leaf traits and physiological …
Evaluation Of A Global Spring Wheat Panel For Stripe Rust: Resistance Loci Validation And Novel Resources Identification, 2019 Damanhour University & University of Nebraska- Lincoln
Evaluation Of A Global Spring Wheat Panel For Stripe Rust: Resistance Loci Validation And Novel Resources Identification, Ibrahim Elbasyoni, Walid M. El-Orabey, Sabah Morsy, P. S. Baenziger, Zakaria Al Ajlouni4, Ismail M. Dweikat
Department of Agronomy and Horticulture: Faculty Publications
Stripe rust (incited by Puccinia striiformis f. sp. tritici) is airborne wheat (Triticum aestivum L.) disease with dynamic virulence evolution. Thus, anticipatory and continued screening in hotspot regions is crucial to identify new pathotypes and integrate new resistance resources to prevent potential disease epidemics. A global wheat panel consisting of 882 landraces and 912 improved accessions was evaluated in two locations in Egypt during 2016 and 2017. Five prevalent and aggressive pathotypes of stripe rust were used to inoculate the accessions during the two growing seasons and two locations under field conditions. The objectives were to evaluate the panel for …
Influence Of Vermicompost Tea On Secondary Metabolites In Solanum Lycopersicum Within South Florida, 2019 Florida International University
Influence Of Vermicompost Tea On Secondary Metabolites In Solanum Lycopersicum Within South Florida, Daphne K. Sugino Souffront
FIU Electronic Theses and Dissertations
Fresh Market Tomatoes provide a high revenue stream for Florida’s agricultural sector. To attain profitable yields, farmers introduce high inputs of pesticides to suppress pest invasion/damage. Heavy usage of pesticides has adverse effects on human and environmental health. A possible solution might be the incorporation of vermicompost in pest management. Typically used as a fertilizer, vermicompost has pest suppressant properties. Mechanisms influencing enhanced pest resistance are unknown. To identify such mechanisms, a study was conducted to evaluate physical and chemical changes of the BHN589 tomato plant following the addition of varying vermicompost tea treatments (T5%, T10%, and T20%) . Results …
Metabolic Dynamics Of Developing Rice Seeds Under High Night-Time Temperature Stress, 2019 University of Nebraska-Lincoln
Metabolic Dynamics Of Developing Rice Seeds Under High Night-Time Temperature Stress, Balpreet K. Dhatt, Nathan Abshire, Puneet Paul, Kalani Hasanthika, Jaspreet Sandhu, Qi Zhang, Toshihiro Obata, Harkamal Walia
Department of Agronomy and Horticulture: Faculty Publications
High temperature stress during rice reproductive development results in yield losses. Reduced grain yield and grain quality has been associated with high temperature stress, and specifically with high night-time temperatures (HNT). Characterizing the impact of HNT on the phenotypic and metabolic status of developing rice seeds can provide insights into the mechanisms involved in yield and quality decline. Here, we examined the impact of warmer nights on the morphology and metabolome during early seed development in six diverse rice accessions. Seed size was sensitive to HNT in four of the six genotypes, while seed fertility and seed weight were unaffected. …
Evolutionary Genetics Of The Genus Zamia (Zamiaceae, Cycadales), 2019 Florida International University
Evolutionary Genetics Of The Genus Zamia (Zamiaceae, Cycadales), Michael Calonje
FIU Electronic Theses and Dissertations
The genus Zamia L. (Zamiaceae), consisting of 77 species, is the most species-rich and widely distributed cycad genus in the New World and is arguably the most morphologically and ecologically diverse genus in the Cycadales. We utilized a multilocus sequence dataset of 10 independent loci (9 single copy nuclear genes + 1 plastid) and extensive taxon sampling (over 90% of species) to infer phylogenetic relationships within Zamia. We infer a robust phylogenetic tree for the genus with a strong geographic delimitation of clades and find that four morphological characters typically used for diagnostic purposes in the genus exhibit a high …
Review Of Birds Of Prey Of The East: A Field Guide By Brian K. Wheeler, 2019 University of Alberta
Review Of Birds Of Prey Of The East: A Field Guide By Brian K. Wheeler, Janet W. Ng
The Prairie Naturalist
Brian Wheeler’s new field guide, Birds of Prey of the East, is a well-researched, comprehensive field guide to birds of prey found in eastern Canada and United States. This 13- year labor of love reflects a life spent studying the nuances of North American birds of prey, as well as partnerships with fellow enthusiasts who provided detailed range maps and other valuable inputs. Birds of Prey of the East features 72 color plates of 27 species, including 14 plates for the Redtailed Hawk (Buteo jamaicensis), which can be one of the most challenging species to identify in …
Ghd8 Controls Rice Photoperiod Sensitivity By Forming A Complex That Interacts With Ghd7, 2019 Huazhong Agricultural University & University of Nebraska- Lincoln
Ghd8 Controls Rice Photoperiod Sensitivity By Forming A Complex That Interacts With Ghd7, Peng Wang, Rong Gong, Ying Yang, Sibin Yu
Department of Agronomy and Horticulture: Faculty Publications
Background: Flowering time is one of the most important agronomic characteristics that ultimately determine yield potential and eco-geographical adaptation in crops. Ghd8 and Ghd7, two major flowering genes, have similar functions and large pleiotropic effects in controlling the heading date, plant height and grain yield of rice. However, these gene interactions at the genetic and molecular levels have not been determined to date.
Results: In this study, we investigated the genetic interaction between Ghd8 and Ghd7 by using a set of near-isogenic lines and a panel of natural germplasm accessions in rice. We found that Ghd8 affected multiple agronomic traits …
Review Of Great Plains Birds, By Larkin Powell, 2019 Emporia State University
Review Of Great Plains Birds, By Larkin Powell, William E. Jensen
The Prairie Naturalist
Biologists who live in the Great Plains of North America know well the general aspersion cast toward our regional home by those unfamiliar with the region and its natural treasures. Larkin Powell alludes to this all-too-common aspersion and diplomatically dispels it in his ornithological showcase of the Great Plains, simply titled Great Plains Birds. The book is a nice, quick read and a well-composed profile of the region’s avian biogeographical history, its disruptions, conservation remedies, examples of basic bird biology, and tips on how to enjoy the bird life on display in this dynamic region. Having been an ornithologist …