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Field Pea Response To Seeding Rate, Depth, And Inoculant In West-Central Nebraska, Strahinja V. Stepanovic, Charles Burr, Julie A. Peterson, Daran Rudnick, Cody F Creech, Rodrigo Werle 2018 University of Nebraska-Lincoln

Field Pea Response To Seeding Rate, Depth, And Inoculant In West-Central Nebraska, Strahinja V. Stepanovic, Charles Burr, Julie A. Peterson, Daran Rudnick, Cody F Creech, Rodrigo Werle

West Central Research and Extension Center, North Platte

Increased market demand and larger adoption of field pea (Pisum sativum L.) in semiarid west-central Nebraska has provided opportunities to replace summer fallow and diversify crop rotations. As a relatively new crop, its response to different seeding practices has not been evaluated in this eco-region. Field pea grain yield response to seeding depth (25, 50, and 75 mm), inoculation with Rhizobium leguminosarum bv. viciae (yes and no rhizobia inoculant), and seeding rates (35, 50, 65, 75, 90, 105, and 120 plants m–2) was investigated in 2015 and 2016 at five sites in Perkins County, NE. There were no differences ...


Arabidopsis Thaliana Ei-5: Minor Vein Architecture Adjustment Compensates For Low Vein Density In Support Of Photosynthesis, Jared J. Stewart, Stephanie K. Polutchko, Barbara Demmig-Adams, William W. Adams III 2018 University of Colorado Boulder

Arabidopsis Thaliana Ei-5: Minor Vein Architecture Adjustment Compensates For Low Vein Density In Support Of Photosynthesis, Jared J. Stewart, Stephanie K. Polutchko, Barbara Demmig-Adams, William W. Adams Iii

University Libraries Open Access Fund Supported Publications

An Arabidopsis thaliana accession with naturally low vein density, Eifel-5 (Ei-5), was compared to Columbia-0 (Col-0) with respect to rosette growth, foliar vein architecture, photosynthesis, and transpiration. In addition to having to a lower vein density, Ei-5 grew more slowly, with significantly lower rates of rosette expansion, but had similar capacities for photosynthetic oxygen evolution on a leaf area basis compared to Col-0. The individual foliar minor veins were larger in Ei-5, with a greater number of vascular cells per vein, compared to Col-0. This compensation for low vein density resulted in similar values for the product of vein density ...


A Quantitative Analysis Of The Effects Of Urbanization, Mesophication And Prescribed Burns On Oak Woodlands In The Chicago Metropolitan Area, Chad Populorum 2018 Augustana College, Rock Island Illinois

A Quantitative Analysis Of The Effects Of Urbanization, Mesophication And Prescribed Burns On Oak Woodlands In The Chicago Metropolitan Area, Chad Populorum

Celebration of Learning

Urban expansion has had devastating impacts on forest ecosystems, especially within the past century. Human attempts to dominate nature have diminished natural disturbance regimes, which have maintained the biodiversity and historic composition of these ecosystems. Fires have been a prominent force in maintaining the structure of oak, hickory and other heliophytic (sun loving and fire-adapted) forest systems. Human induced fire suppression has led to mesophication across North America. Mesophication is the transition from drier conditions with open canopies to wetter conditions with closed canopies. These new conditions decrease the survival rates of these important species and begin to favor mesophytic ...


On The Maintained Significance Of Botanical Illustration In Modern Plant Identification Guides, Andi Kur 2018 University of Tennessee at Chattanooga

On The Maintained Significance Of Botanical Illustration In Modern Plant Identification Guides, Andi Kur

Honors Theses

This project began over 2.5 years ago when I, an artist by hobby, contacted Dr. Joey Shaw, the director of the Herbarium at the University of Tennessee Chattanooga, with a request to sketch from specimens in the UCHT collection. Dr. Shaw, fortuitously in need of an illustrator, prompted me with the opportunity to collaborate with him in the creation of illustrations for the second edition of the Guide to the Vascular Plants of Tennessee. From here, this project has grown as we have attempted to determine the most effective way to illustrate the guide, our questions manifesting in a ...


Determining The Light Requirements Of Various Turfgrass Systems And Investigating Techniques To Quantify Photosynthetically Active Radiation, Travis Russell 2018 University of Arkansas, Fayetteville

Determining The Light Requirements Of Various Turfgrass Systems And Investigating Techniques To Quantify Photosynthetically Active Radiation, Travis Russell

Theses and Dissertations

Light is one of the primary growth-limiting factors of turfgrass. Without sufficient quantities of photosynthetically active radiation (PAR; 400-700 nm wavelength), turfgrass quality will decline and could ultimately result in plant death. PAR light can be expressed in a daily quantity known as the daily light integral (DLI) and has been utilized to determine minimum light requirements for turfgrass as well as other plants. With an estimated 25% of all turfgrass being maintained under some level of shaded conditions, it is imperative to define minimum DLI requirements of various turfgrass systems to ensure acceptable turf quality. In addition, it is ...


Correcting For The Inconveniences Of Cultivation: Foraging As A Food Source In Southwestern Burkina Faso, Julia Deryn Morgan 2018 Macalester College

Correcting For The Inconveniences Of Cultivation: Foraging As A Food Source In Southwestern Burkina Faso, Julia Deryn Morgan

Geography Honors Projects

Malnutrition is an important public health issue in Burkina Faso where 30 % of children are underweight for their age and 92% suffer from iron deficiency. Such statistics indicate that there is a significant lack of adequate nutrition in the country. With approximately 80% of the population employed in the agricultural sector, development projects have focused on increasing agricultural production and commercializing output to ameliorate poor nutrition. However, this strategy ignores the importance of local knowledge and food traditions, most notably by neglecting to acknowledge foraging as a significant source of food. To address this concern, I seek to understand how ...


Annotated Checklist Of The Vascular Plant Species Observed At The Gordon Natural Area (West Chester University, Pa) 1967-2018 - Version Xiii, Nur Ritter 2018 West Chester University of Pennsylvania

Annotated Checklist Of The Vascular Plant Species Observed At The Gordon Natural Area (West Chester University, Pa) 1967-2018 - Version Xiii, Nur Ritter

Gordon Natural Area Baseline Plant Survey Documents

No abstract provided.


Testing The Potential Of Novel Grain Crop Cultivation In Rural Malawi During The Dry Season Through Irrigation And Soil Modification, Jessica Truman 2018 Brigham Young University

Testing The Potential Of Novel Grain Crop Cultivation In Rural Malawi During The Dry Season Through Irrigation And Soil Modification, Jessica Truman

Undergraduate Honors Theses

This research project studied the germination and growth rates of oat and quinoa crops in Mtalimanja, Malawi. This project was part of a larger effort by General Mills and Brigham Young University researchers to increase the diversity and nutrient content of crops in impoverished countries worldwide. It was conducted from May to August 2017 during Malawi’s dry season. Tetraploid oats and quinoa, both modified to increase the protein content of harvested grains, were planted under three different soil conditions: unamended soil, soil mixed with composted chicken litter, and soil with surface-applied granular fertilizer. The research plots were watered daily ...


Effects Of Elevated Temperature, Elevated Co2 And Photoperiod On Conifer Carbon Fluxes, Joseph R. Stinziano 2018 The University of Western Ontario

Effects Of Elevated Temperature, Elevated Co2 And Photoperiod On Conifer Carbon Fluxes, Joseph R. Stinziano

Electronic Thesis and Dissertation Repository

Increasing temperatures due to rising atmospheric CO2 concentrations will have direct effects on plant physiology, specifically photosynthetic carbon uptake. Changes in photosynthetic carbon uptake will alter feedbacks between vegetation and atmospheric CO2, and changes in forest carbon dynamics will be important in determining whether vegetation amplifies or attenuates the effects of anthropogenic CO2 emissions on climate. Coniferous trees, which are a large component of the boreal forest, are understudied in relation to thermal acclimation of photosynthesis and temperature effects on growth. In the present work, I assess the impact of rising temperatures on carbon fluxes in coniferous ...


Does The Fungal Pathogen (Botryosphaeria Dothidea) Exceed The Dehydration Tolerance Of Its Chaparral Host?, Cristian M. Garcia 2018 Pepperdine University

Does The Fungal Pathogen (Botryosphaeria Dothidea) Exceed The Dehydration Tolerance Of Its Chaparral Host?, Cristian M. Garcia

Seaver College Research And Scholarly Achievement Symposium

We tested the hypothesis that an opportunistic endophytic fungus Botryosphaeria dothidea that frequently infects and causes dieback in several different species of chaparral shrubs in the Santa Monica Mountains continues to elongate and grow in host tissues at dehydration levels that exceed host survival. This was done by collecting several large branches from the field from three dominant species of co-occurring chaparral shrubs, Malosma laurina, Ceanothus spinosus, and Ceanothus megacarpus. We allowed branches to dehydrate at increasing lengths of time, from a few days to one week, in an air-conditioned laboratory, then sealed in plastic bags to allow tissuewater equilibration ...


The Effect Of Two Planting Dates And Methods On Snap Bean (Phaseolus Vulgaris) Production In A Tunnel House, Edward Sparks, Victor Khan, Ramble Ankumah, James E. Currington, Nathaniel Ellison, George X. Hunter Jr., Jeffery L. Moore 2018 Tuskegee University

The Effect Of Two Planting Dates And Methods On Snap Bean (Phaseolus Vulgaris) Production In A Tunnel House, Edward Sparks, Victor Khan, Ramble Ankumah, James E. Currington, Nathaniel Ellison, George X. Hunter Jr., Jeffery L. Moore

Professional Agricultural Workers Journal

The study was conducted to evaluate the impact of two planting dates and methods on snap bean yields in a tunnel house. The main plots included planting dates March 17 and 31, 2016 for first and second plantings. The sub-plots consisted of planting Method 1 where one seed per hill was planted every 4” apart, and planting Method 2 where three seeds per hill were planted every 12” apart; each treatment combination was replicated four times. The results of the study showed that it took 55 days for the snap beans to be ready for harvest for both planting dates ...


The Effect Of Simulated Herbivory On Pea Plants (Pisum Sativum) Under Water Stress, Georgia Harrison 2018 Northern Michigan University

The Effect Of Simulated Herbivory On Pea Plants (Pisum Sativum) Under Water Stress, Georgia Harrison

Conspectus Borealis

No abstract provided.


Inheritance Of Mesotrione Resistance In An Amaranthus Tuberculatus (Var. Rudis) Population From Nebraska, Usa, Maxwel C. Oliveira, Todd A. Gaines, Amit J. Jhala, Stevan Z. Knezevic 2018 University of Nebraska-Lincoln

Inheritance Of Mesotrione Resistance In An Amaranthus Tuberculatus (Var. Rudis) Population From Nebraska, Usa, Maxwel C. Oliveira, Todd A. Gaines, Amit J. Jhala, Stevan Z. Knezevic

Agronomy & Horticulture -- Faculty Publications

A population of Amaranthus tuberculatus (var. rudis) evolved resistance to 4- hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor herbicides (mesotrione, tembotrione, and topramezone) in Nebraska. The level of resistance was the highest to mesotrione, and the mechanism of resistance in this population is metabolism-based likely via cytochrome P450 enzymes. The increasing number of weeds resistant to herbicides warrants studies on the ecology and evolutionary factors contributing for resistance evolution, including inheritance of resistance traits. In this study, we investigated the genetic control of mesotrione resistance in an A. tuberculatus population from Nebraska, USA. Results showed that reciprocal crosses in the F1 families exhibited ...


Genome-Wide Analysis Of Grain Yield Stability And Environmental Interactions In A Multiparental Soybean Population, Alencar Xavier, Diego Jarquin, Reka Howard, Vishnu Ramasubramanian, James E. Specht, George L. Graef, William D. Beavis, Brian W. Diers, Qijian Song, Perry B. Cregan, Randall L. Nelson, Rouf Mian, J. Grover Shannon, Leah K. McHale, Dechun Wang, William Schapaugh, Aaron J. Lorenz, Shizhong Xu, William M. Muir, Katy M. Rainey 2018 Purdue University

Genome-Wide Analysis Of Grain Yield Stability And Environmental Interactions In A Multiparental Soybean Population, Alencar Xavier, Diego Jarquin, Reka Howard, Vishnu Ramasubramanian, James E. Specht, George L. Graef, William D. Beavis, Brian W. Diers, Qijian Song, Perry B. Cregan, Randall L. Nelson, Rouf Mian, J. Grover Shannon, Leah K. Mchale, Dechun Wang, William Schapaugh, Aaron J. Lorenz, Shizhong Xu, William M. Muir, Katy M. Rainey

Agronomy & Horticulture -- Faculty Publications

Genetic improvement toward optimized and stable agronomic performance of soybean genotypes is desirable for food security. Understanding how genotypes perform in different environmental conditions helps breeders develop sustainable cultivars adapted to target regions. Complex traits of importance are known to be controlled by a large number of genomic regions with small effects whose magnitude and direction are modulated by environmental factors. Knowledge of the constraints and undesirable effects resulting from genotype by environmental interactions is a key objective in improving selection procedures in soybean breeding programs. In this study, the genetic basis of soybean grain yield responsiveness to environmental factors ...


Overlapping Residual Herbicides For Control Of Photosystem (Ps) Ii- And 4-Hydroxyphenylpyruvate Dioxygenase (Hppd)-Inhibitor-Resistant Palmer Amaranth (Amaranthus Palmeri S. Watson) In Glyphosate-Resistant Maize, Parminder S. Chahal, Zahoor Ahmad Ganie, Amit J. Jhala 2018 University of Nebraska-Lincoln

Overlapping Residual Herbicides For Control Of Photosystem (Ps) Ii- And 4-Hydroxyphenylpyruvate Dioxygenase (Hppd)-Inhibitor-Resistant Palmer Amaranth (Amaranthus Palmeri S. Watson) In Glyphosate-Resistant Maize, Parminder S. Chahal, Zahoor Ahmad Ganie, Amit J. Jhala

Agronomy & Horticulture -- Faculty Publications

A Palmer amaranth (Amaranthus palmeri S. Watson) biotype has evolved resistance to photosystem (PS) II- (atrazine) and 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicides (mesotrione, tembotrione, and topramezone) in maize seed production field in Nebraska, USA. The objectives of this study were to determine the effect of soil residual pre-emergence (PRE) herbicides followed by (fb) tank-mixture of residual and foliar active post-emergence (POST) herbicides on PS-II- and HPPD-inhibitor-resistant Palmer amaranth control, maize yield, and net economic returns. Field experiments were conducted in a grower’s field infested with PS II- and HPPD-inhibitor-resistant Palmer amaranth near Shickley in Fillmore County, Nebraska, USA in ...


Utilizing Gis To Locate Endangered Gravel Hill Prairies Of The Wabash River Valley, Ryan W.R. Schroeder 2018 Purdue University

Utilizing Gis To Locate Endangered Gravel Hill Prairies Of The Wabash River Valley, Ryan W.R. Schroeder

Engagement & Service-Learning Summit: Reciprocal & Sustainable Partnerships

The Gravel Hill Prairies (GHP’s) of the Wabash River Valley are an endangered ecosystem in the state of Indiana and provide optimal growing conditions for a number of state endangered plants. Currently only four remnants are known to exist near Lafayette, IN, found by a previous study conducted in 1980 by Post, Bacone, and Aldrich (Proceedings of the Indiana Academy of Science, 1984, vol. 94: 457-464). These unique ecosystems have been found to occur almost exclusively on soils classified as Rodman Gravelly Loams and Strawn-Rodman complexes which occur predominantly along the outwash terraces of the Wabash River and its ...


1999 Lilley Cornett Woods Overstory Data, Ryan W. McEwan, Julia I. Chapman, Robert N. Muller 2018 University of Dayton

1999 Lilley Cornett Woods Overstory Data, Ryan W. Mcewan, Julia I. Chapman, Robert N. Muller

Ryan McEwan

Data collected in 1999 on the overstory in the Big Everidge Hollow portion of the Lilley Cornett Woods Appalachian Ecological Research Station in southeastern Kentucky. Data key is provided in a supplemental file.

Accompanying photo by Ryan W. McEwan.

DOI: https://doi.org/10.26890/lcw.5pn95oc6d7


Herbaceous Vegetation: June, Julia I. Chapman, M. E. Maloney, Erin C. Rowekamp, Mitchell J. Kukla, Sean D. Mahoney, Eric B. Borth, Ryan W. McEwan 2018 University of Dayton

Herbaceous Vegetation: June, Julia I. Chapman, M. E. Maloney, Erin C. Rowekamp, Mitchell J. Kukla, Sean D. Mahoney, Eric B. Borth, Ryan W. Mcewan

Data files

June


Within-Stream Variability Data, Kevin W. Custer, Julia I. Chapman, Ryan W. McEwan 2018 University of Dayton

Within-Stream Variability Data, Kevin W. Custer, Julia I. Chapman, Ryan W. Mcewan

Data files

No abstract provided.


Water Toxicity Effects Test: Physicochemical Data, Kevin W. Custer, Eric B. Borth, Julia I. Chapman, Ryan W. McEwan 2018 University of Dayton

Water Toxicity Effects Test: Physicochemical Data, Kevin W. Custer, Eric B. Borth, Julia I. Chapman, Ryan W. Mcewan

Data files

No abstract provided.


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