Introduction Of Native Podostemum Ceratophyllum Michx. (Podostemaceae, Hornleaf Riverweed) Into The Norwalk River, Wilton, Ct, 2021 Western Connecticut State University
Introduction Of Native Podostemum Ceratophyllum Michx. (Podostemaceae, Hornleaf Riverweed) Into The Norwalk River, Wilton, Ct, Kelly Marie Nealon
MS in Integrated Biological Diversity
Podostemum ceratophyllum (Podostemaceae), “Hornleaf riverweed,” is a native aquatic flowering plant that occurs only attached to rocks in fast flowing water. The species occurs in much of eastern United States and Canada. Over the last several decades the species has notably declined in numbers, largely as a result of human induced factors. The ecological importance of P. ceratophyllum in rivers is well documented. This research is the first attempt to transplant the species into a river where it was not known to occur, with the goal of helping to mitigate the loss of populations. The plant was taken from two ...
The Effect Of Clay On The Inhibitory Effect Of Mustard Seed Meal On Velvetleaf Seedling Growth, 2021 Andrews University
The Effect Of Clay On The Inhibitory Effect Of Mustard Seed Meal On Velvetleaf Seedling Growth, Heeyun Oh
Honors Scholars & Undergraduate Research Poster Symposium Programs
Mustard seed meal (MSM) has been studied as a biofumigant that suppresses weed growth organically. Previous studies have shown that MSM in soil with a higher sand content was highly effective in suppressing the germination of weeds, and that as clay/silt in sand content increased, MSM effectiveness decreased in suppressing seed germination. Based on these results, it was postulated that clay may have effects on MSM by inhibiting it from suppressing weed growth. Two different types of pure clay--kaolin and montmorillonite--were selected to test at various concentrations. Low concentration of clay in MSM does not seem to have effect ...
Abrasive Weeding As A Vehicle For Precision Fertilizer Management In Organic Vegetable Production, 2021 University of Nebraska - Lincoln
Abrasive Weeding As A Vehicle For Precision Fertilizer Management In Organic Vegetable Production, Tran Kim Ngan Luong, Frank Forcella, Sharon A. Clay, Michael S. Douglass, Sam E. Wortman
Agronomy, Horticulture and Plant Science 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 ...
Allelopathy Research In Global Perspective: A Scientometric Study Of Academic Productivity Over A Period Of 25 Years (1995 - 2019), 2021 Deanship of Library Affairs, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
Allelopathy Research In Global Perspective: A Scientometric Study Of Academic Productivity Over A Period Of 25 Years (1995 - 2019), Abdurahiman Pattukuthu, Abdul Jaleel Pottachola, Mohamed Idhris
Library Philosophy and Practice (e-journal)
This research is concerned with the Allelopathy research literature published from 1995 to 2019 obtained from SCOPUS and studied to identify the trends in research publication in terms of various document types, annual growth, the share of publication, citation growth, average citation per paper, most productive country, authors, journals, highly cited articles during this period. These factors were identified and compared for their research impact over a period of 25 years.
Data For « Does Invasion Science Encompass The Invaded Range? A Comparison Of The Geographies Of Invasion Science Versus Management In The U.S. », 2021 University of Massachusetts Amherst
Data For « Does Invasion Science Encompass The Invaded Range? A Comparison Of The Geographies Of Invasion Science Versus Management In The U.S. », Lara Munro, Bridget Griffin, Brittany Laginhas, Bethany Bradley
Data and Datasets
Data collected from English-language articles published between 1999-2018 on the ten most studied invasive plants in the United States.
Effects Of Prescribed Fire Timing On Native Plant Composition, Forage Biomass Accumulation, And Root Carbohydrate Reserves In The Kansas Flint Hills: Year 2 Of 6, Z. M. Duncan, A. J. Tajchman, M. P. Ramirez, J. Lemmon, W. R. Hollenbeck, D. A. Blasi, K C. Olson
Kansas Agricultural Experiment Station Research Reports
Objective: The objective was to document the effects of prescribed fire timing on native plant composition, forage biomass, and root carbohydrate concentrations in key native tallgrass species in the Kansas Flint Hills.
Study Description: This experiment was conducted at the Kansas State University Beef Stocker Unit. Eighteen pastures were grouped by watershed and assigned to one of three prescribed-burn treatments: spring (April 7 ± 2.1 days), summer (August 21 ± 5.7 days), or fall (October 2 ± 9.9 days). Botanical composition, forage biomass, and root carbohydrate concentrations in big bluestem, little bluestem, Indian grass, and purple prairie clover were evaluated ...
Impact Of Arbuscular Mycorrhizal Fungi On Conyza Canadensis Drought Responses And Possible Mechanisms, 2021 University of Montana, Missoula
Impact Of Arbuscular Mycorrhizal Fungi On Conyza Canadensis Drought Responses And Possible Mechanisms, Kian G.M. Speck, Ylva Lekberg, Anna Sala
Undergraduate Theses, Professional Papers, and Capstone Artifacts
- Arbuscular mycorrhizal fungi (AMF) are important plant mutualists that can facilitate plant responses to various environmental stressors, such as drought. A plant that may benefit from AMF-induced drought tolerance is Conyza canadensis due to its ability to thrive in dry conditions and its high colonization rate. However, no studies have researched C. canadensis in this context and the exact mechanisms of AMF-induced drought tolerance are still unknown.
- To better understand if and how AMF facilitate drought response in C. canadensis, we conducted a greenhouse experiment comparing the response of mycorrhizal and non-mycorrhizal plants to three watering levels. We measured dry ...
Crop Response To Low-Dose Dicamba, 2021 University of Arkansas, Fayetteville
Crop Response To Low-Dose Dicamba, Mason Castner
Theses and Dissertations
The introduction of dicamba-resistant (DR) soybean [Glycine max (L.) Merr.] and cotton (Gossypium hirsutum L.) followed by a label allowing over-the-top applications of dicamba in the 2017 provided growers an additional option for broadleaf weed control. Because non-DR soybean is sensitive to low concentrations of dicamba, postemergence dicamba applications present growers choosing to plant non-DR soybean with concerns of damage from off-target movement through physical drift and volatilization of the herbicide as well as tank-contamination from prior dicamba application. Consequences of low-dose dicamba exposure on sensitive vegetative and reproductive soybean have been well researched, but little is known regarding the ...
Evaluating The Current Weed Community In Wild Blueberry Fields And Ipm Strategies For Spreading Dogbane (Apocynum Androsaemifolium), Anthony G. Ayers
Electronic Theses and Dissertations
Lowbush blueberry (Vaccinium angustifolium) is Maine’s third largest crop (USDA 2020 a). From 2017 – 2019 the three seasons yield average was 27,200 tons were harvested from 19,500 acres for a value of $22,468,000 (USDA 2020 c). Lowbush blueberries are managed on a two-year cycle. Every other year, lowbush blueberry fields are pruned to the ground either through the use of a tractor mounted flail mower or a prescribed burn (Yarborough 2009). Pruning is a necessary part of managing lowbush blueberries as the second-year growth produces the highest yield but steadily declines in subsequent years (Drummond ...
Effects Of Wollastonia Biflora Expansion On The Soil Seed Bank In Native Forest Communities On A Tropical Coral Island, 2020 Chinese Academy of Sciences
Effects Of Wollastonia Biflora Expansion On The Soil Seed Bank In Native Forest Communities On A Tropical Coral Island, Yao Huang, Hai Ren, Jun Wang, Nan Liu, Shuguang Jian, Hongyue Cai, Dafeng Hui, Qinfeng Guo
Biology Faculty Research
Invasive plants and native weeds (i.e., undesirable plant species) often have negative effects on native ecosystems. However, the effects of weed expansion on soil seed banks and seedling emergence in native forests have not been well investigated. In this study, we used a seedling emergence assay to assess the effects of expansion by a native weed, the perennial C4 herb Wollastonia biflora, on the soil seed bank and above-ground vegetation in forests on Yongxing Island, a coral island in the South China Sea. We found that W. biflora expansion was associated with a reduced abundance of native species in ...
Resistance To Herbicides Conferred By Amaranthus Palmeri Protoporphyrinogen Ix Oxidase Mutations, 2020 University of Arkansas, Fayetteville
Resistance To Herbicides Conferred By Amaranthus Palmeri Protoporphyrinogen Ix Oxidase Mutations, Pamela Carvalho De Lima
Theses and Dissertations
Palmer amaranth (Amaranthus palmeri S. Wats.) is one of the most problematic agronomic weeds to control in fields across Arkansas. Thus far, this species has evolved resistance to several herbicides, including protoporphyrinogen IX oxidase (PPO) inhibitors. The majority of PPO-resistant Palmer amaranth populations harbor a target-site mutation (substitution or deletion of amino acids). The objective of this thesis was to identify the level of fomesafen resistance conferred by PPO2 mutations from Palmer amaranth. The experiments conducted aimed to (1) characterize the level of resistance conferred by the transgene Palmer amaranth ppo2 carrying ΔG210 mutation into the wild type rice (Oryza ...
How Small Cannabis Businesses Can Survive The Hurdles Of Ip Protection, 2020 Texas A&M University School of Law (Student)
How Small Cannabis Businesses Can Survive The Hurdles Of Ip Protection, Spencer Keller
Texas A&M Law Review
The current state of cannabis and intellectual property laws and regulations leaves small and emerging cannabis businesses at a distinct disadvantage compared to those in other industries. Those wishing to pursue cannabis inventions and patents face an uphill battle as cannabis research and development is nearly impossible to conduct legally. The difficulty in researching cannabis has pushed companies to move their research outside of the United States, leaving those growing businesses unable to corner their market in the cannabis industry. Complicating matters further are the overly broad patents that cannabis patentees are likely receiving as a result of market participants ...
Comparative Study Of The Rates Of Dispersal Of Triadica Sebifera (Chinese Tallow) And Imperata Cylindrica (Japanese Blood Grass) In North America, Jamie W. Dinella, Meem Noshin Nawal Khan
Chinese Tallow (Triadica sebifera) and Japanese Blood Grass (Imperata cylindrica) are two invasive species that wreck havoc on their invaded areas by reducing the biodiversity of their new environments. We studied the rate of dispersal of these two species in North America to determine which species spreads faster. We hypothesized that Chinese Tallow spreads faster than Japanese Blood Grass since Chinese Tallow was introduced in North America long before Japanese Blood Grass and has a greater number of seed dispersal methods (e.g. wind, water, bird, etc.) than Japanese Blood Grass. To test our hypothesis, we collected the record of ...
Teosinte (Zea Mays Ssp Parviglumis) Growth And Transcriptomic Response To Weed Stress Identifies Similarities And Differences Between Varieties And With Modern Maize Varieties, 2020 Augustana College - Sioux Falls
Teosinte (Zea Mays Ssp Parviglumis) Growth And Transcriptomic Response To Weed Stress Identifies Similarities And Differences Between Varieties And With Modern Maize Varieties, S. A. Bruggeman, D. P. Horvath, A. Y. Fennell Dr, J. A. Gonzalez-Hernandez, S. A. Clay
Agronomy, Horticulture and Plant Science Faculty Publications
Transcriptomic responses of plants to weed presence gives insight on the physiological and molecular mechanisms involved in the stress response. This study evaluated transcriptomic and morphological responses of two teosinte (Zea mays ssp parviglumis) (an ancestor of domesticated maize) lines (Ames 21812 and Ames 21789) to weed presence and absence during two growing seasons. Responses were compared after 6 weeks of growth in Aurora, South Dakota, USA. Plant heights between treatments were similar in Ames 21812, whereas branch number decreased when weeds were present. Ames 21789 was 45% shorter in weedy vs weed-free plots, but branch numbers were similar between ...
Sensitivity Of Enlisttm And Roundup Ready Xtend® Technologies To Auxin Herbicides And Comparison Of Resistance To Susceptible Cotton And Soybean Cultivars, 2020 University of Arkansas, Fayetteville
Sensitivity Of Enlisttm And Roundup Ready Xtend® Technologies To Auxin Herbicides And Comparison Of Resistance To Susceptible Cotton And Soybean Cultivars, James Rose
Theses and Dissertations
Increases in weed resistance have led to the development of new herbicide-resistant crop technologies, namely the Roundup Ready Xtend® and EnlistTM weed control systems. These new technologies provide resistance to applications of the synthetic auxins dicamba or 2,4-D, respectively, in traited cotton or soybean. It is unknown if there is any resistance to other herbicides within the synthetic auxin group (WSSA Group 4) in these traited crops. Experiments were conducted with auxin herbicides representing all five families within WSSA Group 4. Herbicides were applied either preemergence (PRE) or postemergence (POST) relative to the crop in a single application. Applications ...
Metabolomic Differences Between Invasive Alien Plants From Native And Invaded Habitats, 2020 Rutgers University - New Brunswick/Piscataway
Metabolomic Differences Between Invasive Alien Plants From Native And Invaded Habitats, Sarah A. Skubel, Xiaoyang Su, Alexander Poulev, Llewellyn C. Foxcroft, Vyacheslav Dushenkov, Ilya Raskin
Publications and Research
Globalization facilitated the spread of invasive alien species (IAS), undermining the stability of the world’s ecosystems. We investigated the metabolomic profiles of three IAS species: Chromolaena odorata (Asteraceae) Datura stramonium (Solanaceae), and Xanthium strumarium (Asteraceae), comparing metabolites of individual plants in their native habitats (USA), to their invasive counterparts growing in and around Kruger National Park (South Africa, ZA). Metabolomic samples were collected using RApid Metabolome Extraction and Storage (RAMES) technology, which immobilizes phytochemicals on glass fiber disks, reducing compound degradation, allowing long-term, storage and simplifying biochemical analysis. Metabolomic differences were analyzed using ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) of ...
Influence Of Six Herbicides Applied To Silage Corn On Fall Planted Rye And Radish Cover Crop Growth In South Dakota Soils, 2020 South Dakota State University
Influence Of Six Herbicides Applied To Silage Corn On Fall Planted Rye And Radish Cover Crop Growth In South Dakota Soils, Sydney Pridie
The Journal of Undergraduate Research
Spring preemergence herbicide applications are often used for burndown of existing weeds and residual control, eliminating weed presence during early season crop growth. There has been an increase in the interest in planting cover crops soon after cash crop removal, due to the potential soil and production benefits. However, soil herbicide residuals may result in poor cover crop growth. This study examined the growth of radish (Raphanus sativa) and rye (Secale cereal), species often used as cover crops, in soils that had been treated with residual herbicides about 100 d prior to cover crop planting. The herbicides were applied at ...
Florpyrauxifen-Benzyl Use In Arkansas Rice (Oryza Sativa L.), 2020 University of Arkansas, Fayetteville
Florpyrauxifen-Benzyl Use In Arkansas Rice (Oryza Sativa L.), Hannah Elizabeth Wright
Theses and Dissertations
Florpyrauxifen-benzyl is a synthetic auxin herbicide which was commercially released in 2018 to combat troublesome grass, broadleaf, and sedge weed species in rice. Many factors may influence cultivar response to a new herbicide; hence, it is important to understand factors contributing to crop sensitivity to an herbicide in order to make appropriate recommendations. Prior to the onset of this study, research had been conducted on florpyrauxifen-benzyl in a flooded environment; however, none had been executed in a non-flooded environment. Experiments were conducted to evaluate the response of a long-grain variety ‘CL111’, a medium-grain variety ‘CL272’, and a long-grain hybrid ‘CLXL745 ...
Use Of Acetolactate Synthase-Inhibiting Herbicides In Inzen Grain Sorghum (Sorghum Bicolor L. Moench Ssp. Bicolor), 2020 University of Arkansas, Fayetteville
Use Of Acetolactate Synthase-Inhibiting Herbicides In Inzen Grain Sorghum (Sorghum Bicolor L. Moench Ssp. Bicolor), Hunter Bowman
Theses and Dissertations
Grain sorghum is typically grown as a rotational crop in Arkansas because of its many benefits, one being the effective control of Palmer amaranth through the use of atrazine. However, limited options exist for postemergence (POST) control of weedy grasses within the crop. Inzen™ grain sorghum is the result of a nicosulfuron resistant weedy sorghum biotype cross-bred with a commercial line of grain sorghum. Inzen™ allows for safe use of over-the-top applications of nicosulfuron within the crop. Nicosulfuron is an acetolactate synthase (ALS)-inhibiting herbicide, which has historically been used in corn for control of weedy grasses. Experiments were conducted ...
Exploring Putative Herbicide Resistance In Two Summer Annual Grassy Weeds, 2020 University of Tennessee, Knoxville
Exploring Putative Herbicide Resistance In Two Summer Annual Grassy Weeds, Benjamin D. Pritchard
Chancellor’s Honors Program Projects
No abstract provided.