Other Plant Sciences Commons^™

Evaluation Of Pollination Traits Important For Hybrid Wheat Development In Great Plains Germplasm, Nicholas Garst, Vikas Belamkar, Amanda Easterly, Mary J. Guttieri, Hannah Stoll, Amir M. H. Ibrahim, P. Stephen Baenziger

Department of Agronomy and Horticulture: Faculty Publications

Hybrid wheat (Triticum aestivumL.) offers potential yield advantages over conventional inbred cultivars. For hybrid wheat to be a commercial success, the cost to produce the hybrid seed needs to be minimized. Although wheat is naturally selfpollinated, hybrid wheat seed production can be improved by increasing the amount and availability of pollen for cross-pollination. This research examined 19 pollination traits using the Hard Winter Wheat Association Mapping Panel for 3 years. Anther extrusion, pollen 50 date (date at which a genotype has 50% of spikes pollinating), plant height, and pollination duration (last spike pollen 50 date minus first spike …

Refined Teaching Methods, Systems Thinking, And Experiential Approaches Enhanced Students Learning Through Covid-19, Osler Ortez, Alyssa Kuhn, Meghan Sindelar

Department of Agronomy and Horticulture: Faculty Publications

The Soil Nutrient Relationships course serves juniors and seniors with a major or minor in agronomy at the University of Nebraska-Lincoln. Pre-pandemic enrollment averaged 65 students. In 2021 and 2022, course enrollment was 42 and 55, respectively. The course was adjusted to a flipped design in 2017. Moving into 2021, the Soil Nutrient Relationships course underwent a major overhaul by changing the content source materials and organization of lab activities while maintaining the flipped delivery format. While responding to the COVID-19 pandemic limitations, the redesign was intended to focus limited face-to-face meetings (in person or webconference) on problem-solving activities. This …

Jumble Judging: Cognitive And Affective Outcomes Of Intercollegiate Collaboration At A Soil Judging Competition, Rebecca A. Young, Judith Turk, Nicolas A. Jelinski, Amber D. Anderson, Kerry M. Clark, Ashlee L.D. Dere, Colby J. Moorberg, Kristopher Osterloh, Deann Presley

Department of Agronomy and Horticulture: Faculty Publications

Student–student interactions are influential parts of field experiences. While competitive judging events are a fun way to engage students in field-based learning, the focus on competition leads to an atmosphere that discourages collaboration between students. The objective of this study was to evaluate the cognitive and affective learning outcomes resulting from intercollegiate collaboration at a soil judging competition. Teams with students from two to three different universities were assigned and referred to as jumble judging teams. Jumble judging was held for the first time in the 2021 Region 5 Collegiate Soil Judging Contest. Learning outcomeswere assessed using a pre- and …

Screening Spring Wheat Genotypes For Tadreb-B1 And Fehw3 Genes Under Severe Drought Stress At The Germination Stage Using Kasp Technology, Elsayed A. Elsayed, Asmaa A. M. Ahmed, Matías Schierenbeck, Schierenbeck Y. Hussein, P. Stephen Baenziger, Andreas Börner, Ahmed Sallam

Department of Agronomy and Horticulture: Faculty Publications

Drought stress is a major yield-limiting factor throughout the world in wheat (Triticum aestivum L.), causing losses of up to 80% of the total yield. The identification of factors affecting drought stress tolerance in the seedling stage is especially important to increase adaptation and accelerate the grain yield potential. In the current study, 41 spring wheat genotypes were tested for their tolerance to drought at the germination stage under two different polyethylene glycol concentrations (PEG) of 25% and 30%. For this purpose, twenty seedlings from each genotype were evaluated in triplicate with a randomized complete block design (RCBD) in …

Long-Term Manure Application Improves Soil Health And Stabilizes Carbon In Continuous Maize Production System, Saurav Das, Daniel Liptzin, Bijesh Maharjan

Department of Agronomy and Horticulture: Faculty Publications

Soil health lies at the core of a sustainable food production system. A comprehensive evaluation of different agronomic practices and their effect on soil health is essential to determine the best practices that support soil ecosystem services. However, it may take years or decades to observe measurable changes in soil health under varying management practices. The objective of this experiment was to evaluate the effects of long-term (>77 years) manure and inorganic nitrogen (N) fertilizer on soil health and determine the interrelationship among the measured soil bio-physicochemical indicators. The study also aims to understand the sustainability of the monocropping …

Simulated Impacts Of Winter Rye Cover Crop On Continuous Corn Yield And Soil Parameters, Girma Birr, Andualem S. Shiferaw, Tsegaye Tadesse, Marty R. Schmer, Virginia L. Jin, Brian D. Wardlow, Katja Koehler-Cole, Tala Awada, Sarah Beebout, Teferi Tsegaye, Tulsi Kahrel

Department of Agronomy and Horticulture: Faculty Publications

Cover crops (CC) provide numerous ecosystem services such as improving soil health, reducing nutrient loss, increasing productivity, and mitigating greenhouse gas emission. However, adoption of CC has been hindered by perceived negative impacts on main crop productivity and additional production costs. This is partly attributed to the gap in current state of knowledge in CC and its interaction with main crop production under different biophysical conditions. In this study, Decision Support System for Agrotechnology Transfer model was used to evaluate the long-term impact of cereal rye (Secale cereale L.) on corn (Zea mays L.) yield, soil organic carbon …

On Correlation Between Canopy Vegetation And Growth Indexes Of Maize Varieties With Different Nitrogen Efficiencies, Xia Zhao, Shuaili Wang, Tao Wen, Jiamin Xu, Bao Huang, Shufeng Yan, Gangqiang Gao, Yali Zhao, Hongping Li, Jiangfang Qiao, Jinliang Yang, Lianhai Wu, Hongwei Wang, Tianxue Liu, Xinyuan Mu

Department of Agronomy and Horticulture: Faculty Publications

Studying the canopy spectral reflection characteristics of different N-efficient maize varieties and analyzing the relationship between their growth indicators and spectral vegetation indices can help the breeding and application of N-efficient maize varieties. To achieve the optimal management of N fertilizer resources, developing N-efficient maize varieties is necessary. In this research, maize varieties, i.e., the low-N-efficient (Zhengdan 958, ZD958), the high-N efficient (Xianyu 335, XY335), the double-high varieties (Qiule 368, QL368), and the double inefficient-type varieties (Yudan 606 YD606), were used as materials. Results indicate that nitrogen fertilization significantly increased the vegetation indices NDVI, GNDVI, GOSAVI, and RVI of maize …

Editorial: Genetic Validation And Its Role In Crop Improvement, Ahmed Sallam, Ahmad M. Alqudah, P. Stephen Baenziger, Awais Rasheed

Department of Agronomy and Horticulture: Faculty Publications

Gene discovery for economically important traits has remained a challenging Frontier in crop genomics and breeding. The recent advances in DNA sequencing technologies and genetic analysis approaches paved the way for discovering many genes and hotspot genomic regions controlling target traits. The detection of novel genomic regions or candidate genes is very useful for plant breeders and geneticists to improve crops, dissect the genetics of complex traits, and understand the biological mechanisms of genes underpinning traits of interest. Quantitative trait loci (QTL) mapping and genome-wide association studies (GWAS) dominated recent crop gene discovery research. These studies are becoming routine activities …

The Intertwining Of Zn-Finger Motifs And Abiotic Stress Tolerance In Plants: Current Status And Future Prospects, Debojyoti Moulick, Karma Landup Bhutia, Sukamal Sarkar, Anirban Roy, Udit Nandan Mishra, Biswajit Pramanick, Sagar Maitra, Tanmoy Shankar, Swati Hazra, Milan Skalicky, Marian Brestic, Viliam Barek, Akbar Hossain

Department of Agronomy and Horticulture: Faculty Publications

Environmental stresses such as drought, high salinity, and low temperature can adversely modulate the field crop’s ability by altering the morphological, physiological, and biochemical processes of the plants. It is estimated that about 50% + of the productivity of several crops is limited due to various types of abiotic stresses either presence alone or in combination (s). However, there are two ways plants can survive against these abiotic stresses; a) through management practices and b) through adaptive mechanisms to tolerate plants. These adaptive mechanisms of tolerant plants are mostly linked to their signalling transduction pathway, triggering the action of plant …

Nationwide Assessment Of Leadership Development For Graduate Students In The Agricultural Plant Sciences, Karen Ferreira Da Silva, Ella Burnham, Joe Louis, Douglas Golick, Sydney E. Everhart

Department of Plant Pathology: Faculty Publications

Leadership development is a universally important goal across the agricultural plant science disciplines. Although previous studies have identified a need for leadership skills, less is known about leadership skill development in graduate programs. To address this, we constructed a mixed-method study to identify the most significant graduate school leadership experiences of scientists in the agricultural plant science disciplines. The survey was deployed to 6,728 people in the U.S. and received 1,086 responses (16.1% response rate). The majority of respondents reported that they were from one of the major agricultural states and employed at one of the agricultural plant science related …

Plant Viruses Of Agricultural Importance: Current And Future Perspectives Of Virus Disease Management Strategies, Satyanarayana Tatineni, Gary Hein

Department of Plant Pathology: Faculty Publications

Plant viruses cause significant losses in agricultural crops worldwide, affecting the yield and quality of agricultural products. The emergence of novel viruses or variants through genetic evolution and spillover from reservoir host species, changes in agricultural practices, mixed infections with disease synergism, and impacts from global warming pose continuous challenges for the management of epidemics resulting from emerging plant virus diseases. This review describes some of the most devastating virus diseases plus select virus diseases with regional importance in agriculturally important crops that have caused significant yield losses. The lack of curative measures for plant virus infections prompts the use …

Nebline, November/December 2023

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Students Engaged in Culinary Experience With Local and Indigenous Foods

Recipes of the Month: Brownie Batter Hummus and Bison Pizza Topping by Alyssa Havlovic

Time to Order Tree Seedlings

Love Gardening? Become a Master Gardener!

Garden Guide: Things to Do This Month

ProHort Lawn & Landscape Update

Upcoming Green Industry Conferences

Problematic Frozen Pipes Can be Prevented With Routine, Pre-Winter Maintenance by Becky Schuerman

Successful Farmer Series Will Dig Into Cropping Systems Hot Topics

Cover Crop Grazing Conference, Nov. 7

Pester the Pests or Leave the Leaves? by Kait Chapman

Promoting Language Development in Young Children by Hayley Jackson

Heart …

Nebline, January/February 2023

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

2022 Extension Highlights

Thank You Volunteers! Valued at $711,217

From the Unit Leader: Global Connections

4-H Programs Engaged 32,332 Youth

Setting Sustainable, Healthy New Year’s Resolutions by Alyssa Havlovic

Recipe of the Month: Berry Good Pancakes by Aylssa Havlovic

Garden Guide: Thing to Do This Month

Extension’s 2023 Master Gardener Volunteer Training Begins Soon

Upcoming Green Industry Conferences

ProHort Lawn & Landscape Update

2023 Pesticide Applicator Trainings

Crop Production Clinics

Upcoming Ag Workshops

Minimizing the Impact of Winter Weather on Water & Wastewater Systems by Becky Schuerman

Bringing Motor Play Indoors for Young Children by Hayley Jackson

Tiny Bugs in …

Belowground Plant Communities: Seed Bank Dynamics And Relationship To Aboveground Vegetation In Grazing Allotment Of Klamath County, Oregon, Dellaina C. Morse, Scott M. Estepa

Environmental Science & Management Senior Capstones

Seed banks are valuable resources for restoration but are understudied. The species present in the aboveground composition influence the seed bank through seed inputs. Land managers utilize herbicides to selectively reduce certain species in the above- and belowground composition. The aim of this paper is to observe and assess the species present in a seed bank post-herbicide application, and to discuss the seed bank potential for future restoration at the specific site in Klamath County, Oregon. Soil core samples were collected in the field and brought to the lab where they were processed and prepared for germination. We watered and …

Middle Savannah River: An A/R/Tographic Ecopedagogical Ethnography Experimenting With Rhizomatic Perspectives, Lisa Augustine-Chizmar

College of Graduate Studies: Theses & Dissertations

This research is an experiment in perspective. Using the four commonplaces (Schwab, 1978), I practiced letting the Savannah River teach me what there is to know about the water, the land, the people, and the other entities that depend on ki through artistic, ethnographic, and ecopedagogical lenses. The ethnographic findings describe the social actors that depend on ki and give a voice to the River. The a/r/tographic findings display the River on a canvas map through two hundred years using paint, clay, photography, video, abstract acrylics, and fabric. Together, these methods contribute to a unique ecopedagogical journey. This word cloud …

Zonal Application Of Plant Growth Regulator In Cotton To Reduce Variability And Increase Yield In A Highly Variable Field, Carlos M.P. Vaz, Júlio C. Franchini, Eduardo A. Speranza, Ricardo Y. Inamasu, Lúcio A. De C. Jorge, Ladislau M. Rabello, Ivani De O.N. Lopes, Sérgio Das Chagas, Jefferson L.R. De Souza, Márcio De Souza, Amandio Pires, James Schepers

Department of Agronomy and Horticulture: Faculty Publications

Variable-rate application has great potential to reduce variability and increase yield by spatially optimizing agricultural inputs. In cotton, plant growth regulators (PGRs) control excessive growth and provide suitable plant height for harvest operations. This study evaluates the effect of variable-rate PGR application compared to constant-rate application to reduce yield spatial variability and increase yield. The variable-rate approach was carried out in 2020 based on zonal applications defined by clustering analysis using soil electrical conductivity, vegetation indexes, and yield maps. Application doses and timings were determined by integrating plant height measurements for the whole field in 2019 and by zone in …

Quantifying The Carbon Stored And Sequestered By The Trees On Pomona College’S Campus, Paola A. Giron-Carson

Scripps Senior Theses

We are experiencing a climate crisis that must be confronted with strategic mitigation. Pomona College contributes to the climate crisis through its emissions for which there is a baseline record. However there is no baseline record of the climate mitigation currently performed by the trees on Pomona’s campus through carbon storage. This study seeks to determine a current baseline quantity of carbon stored and sequestrated by Pomona’s trees as well as possible courses of climate mitigation for Pomona College to take. Initial information gathering was conducted through interviews with several stakeholders. This study was conducted using data collected prior to …

Correction To: Genetic Characterization And Expression Analysis Of Wheat (Triticum Aestivum) Line 07or1074 Exhibiting Very Low Polyphenol Oxidase (Ppo) Activity, S. M. Hystad, J. M. Martin, R. A. Graybosch, M. J. Giroux

Department of Agronomy and Horticulture: Faculty Publications

The above mentioned article was published in 2015 with an error in the naming of one of the allele sequences for the PPO gene on the D genome. The PPO-D1f allele was incorrectly named as it is identical to the PPO-D1c allele previously published in GenBank by the authors on March 11th, 2014. An alignment between the previously published PPOD1c allele and a resequencing of the parental line 07OR1074 shows that the PPO-D1f allele is identical to the PPO-D1c allele. The allele in the paper referred to as PPO-D1f should be treated as PPO-D1c and can be accessed at NCBI …

Estimating The Genetic Parameters Of Yield-Related 1 Traits Under Different Nitrogen Conditions In Maize, Semra Palali Delen, Gen Xu, Jenifer Velazquez-Perfecto, Jinliang Yang

Department of Agronomy and Horticulture: Faculty Publications

Understanding the genetic basis responding to nitrogen (N) fertilization in crop production is a long-standing research topic in plant breeding and genetics. Albeit years of continuous efforts, the genetic architecture parameters, such as heritability, polygenicity, and mode of selection, underlying the N responses in maize remain largely unclear. In this study, about n = 230 maize inbred lines were phenotyped under high N (HN) and low N (LN) conditions for two consecutive years to obtain six yield-related traits. Heritability analyses suggested that traits highly responsive to N treatments were less heritable. Using publicly available SNP genotypes, the genome-wide association study …

Interaction Of Quizalofop-P-Ethyl With 2,4-D Choline And/Or Glufosinate For Control Of Volunteer Corn In Corn Resistant To Aryloxyphenoxypropionates, Mandeep Singh, Vipan Kumar, Stevan Z. Knezevic, Suat Irmak, John L. Lindquist, Santosh Pitla, Amit J. Jhala

Department of Agronomy and Horticulture: Faculty Publications

Corn resistant to aryloxyphenoxypropionates (FOPs) (Enlist™ corn) enables the use of quizalofop-p-ethyl (QPE) as a selective postemergence (POST) herbicide for control of glufosinate/glyphosate-resistant corn volunteers. Growers usually mix QPE with 2,4-D choline and/or glufosinate to achieve broad-spectrum weed control in Enlist™ corn. The objectives of this study were to (1) evaluate the efficacy of QPE applied alone or mixed with 2,4-D choline and/or glufosinate for control of glufosinate/glyphosate-resistant corn volunteers in Enlist™ corn and (2) determine the impact of application time (V3 or V6 growth stage of volunteer corn) of QPE-based treatments on volunteer corn control as well as Enlist™ …