Plant Biology Commons^™

Estimating The Onset And Extent Of Dieback Of Phragmites Australis Using The Normalized Difference Vegetation Index And Remotely Sensed Land Cover Classifications, Aimee M. Beaudette

LSU Master's Theses

Phragmites australis is cosmopolitan plant species with an invasive variety present throughout most of North America. In the Balize Delta, Louisiana, USA, P. australis plays an important role in combatting subsidence, maintaining navigation channels, and protecting interior fish and wildlife habitat from waves and storm surge. In 2016 a dieback of P. australis was reported by wetland managers, coinciding with the appearance of an invasive Asian scale insect (Nipponaclerda biwakoensis), though the specific cause is still unknown. Two previous efforts attempted to identify the onset of dieback conditions met with limited success. Using Landsat images from 1985 to …

Grazing Summer‐Active Tall Fescue In South‐Eastern Australia, Margaret Raeside, Michael A. Friend, Alister Lawson

IGC Proceedings (1977-2023)

No abstract provided.

Seasonal Dynamics Of The Rangeland's Vegetations Of Arid Zone Of Uzbekistan, Bakhtiyor K. Mardonov, Wolfgang Pittroff, Toshpulot F. Rajabov, F. N. Bobodjanov

IGC Proceedings (1977-2023)

No abstract provided.

Preliminary Investigations On Columbus Grass (Sorghum Almum Parodi) For Fodder In Semi‐Arid Nigeria: Effects Of Sowing Methods On Growth Components And Herbage Yield, B. S. Malami, H. M. Tukur, H. Dahiru

IGC Proceedings (1977-2023)

No abstract provided.

Forage Potential Of Alfalfa (Medicago Sativa L.) For Wildlife, D. Maćešić, S. Sikora, Z. Svečnjak, D. Uher

IGC Proceedings (1977-2023)

No abstract provided.

Leaf Traits And Performance Vary With Plant Age And Water Availability In Artemisia Californica, Jennifer L. Funk, Julie E. Larson, Gregory Vose

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Background and aims
Leaf functional traits are strongly tied to growth strategies and ecological processes across species, but few efforts have linked intraspecific trait variation to performance across ontogenetic and environmental gradients. Plants are believed to shift towards more resource-conservative traits in stressful environments and as they age. However, uncertainty in how intraspecific trait variation aligns with plant age and performance in the context of environmental variation may limit our ability to use traits to infer ecological processes at larger scales.

Methods
We measured leaf physiological and morphological traits, canopy volume, and flowering effort for Artemisia californica (California sagebrush), a …

Production And Selection Of Quality Protein Popcorn Hybrids Using A Novel Ranking System And Combining Ability Estimates, Leandra Parsons, Ying Ren, Abou Yobi, Preston Hurst, Ruthie Angelovici, Oscar Rodriguez, David R. Holding

Department of Agronomy and Horticulture: Faculty Publications

Popcorn varieties are agronomically sub-optimal and genetically limited compared to other maize subspecies. To increase genetic diversity and improve popcorn agronomics, dent germplasm has been introduced to popcorn with limited success and generally, major loss of popping. Between 2013 and 2018, 12 Quality Protein Popcorn (QPP) inbreds containing Quality Protein Maize (QPM) and popcorn germplasm were produced that maintained popping while carrying the opaque-2 allele conferring elevated kernel lysine. This is an opportune trait in the growing market for healthier snacks and a model for mining QPM traits into popcorn. We crossed QPP inbreds to explore the effects of heterosis …

Genomic Prediction Enhanced Sparse Testing For Multi-Environment Trials, Diego Jarquin, Reka Howard, José Crossa, Yoseph Beyene, Manje Gowda, Johannes W.R. Martini, Giovanny Covarrubias Pazaran, Juan Burgueño, Angela Pacheco, Martin Grondona, Valentin Wimmer, Boddupalli M. Prasanna

Department of Agronomy and Horticulture: Faculty Publications

“Sparse testing” refers to reduced multi-environment breeding trials in which not all genotypes of interest are grown in each environment. Using genomic-enabled prediction and a model embracing genotype · environment interaction (GE), the non-observed genotype-in-environment combinations can be predicted. Consequently, the overall costs can be reduced and the testing capacities can be increased. The accuracy of predicting the unobserved data depends on different factors including (1) how many genotypes overlap between environments, (2) in how many environments each genotype is grown, and (3) which prediction method is used. In this research, we studied the predictive ability obtained when using a …

Effects Of Tank Contamination And Impact Of Drift-Reducing Agents On Weed Control In Response To Dicamba Applications, Milos Zaric

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Availability of dicamba-tolerant (DT) crops from 2017 provided farmers with additional herbicides for weed control management in row crops. However, the technology alike this one has concerns regarding dicamba off-target movement (OTM) causing undesirable effects on sensitive vegetation. Even though dicamba has high water solubility OTM that has often been overlooked when it comes to unintended crop exposure is dicamba tank contamination. Considering the complexity of spraying equipment soybean response may be expected even when small amounts of residues are left in the spray equipment. Typically, the same field spray equipment is used to perform herbicide application through growing season …

Irrigation, Carbon Amelioration, Nitrogen, And Stover Removal Effects On Continuous Corn, Marty Schmer, Virginia L. Jin, Richard B. Ferguson, Brian J. Wienhold

Department of Agronomy and Horticulture: Faculty Publications

Corn (Zea mays L.) residue or stover is harvested as supplemental feed for livestock and is a potential feedstock for cellulosic biofuels. Limited information is available on corn stover removal effects on grain yield under different irrigation rates, nitrogen (N) fertilizer rates, and practices to maintain soil carbon (C) and minimize soil erosion. We evaluated potential interactions between irrigation rate (full or limited), C amelioration practices (cover crop, surface-applied manure, or no amelioration practice), fertilizer N management (125 or 200 kg N ha⁻¹), and stover removal (residue removal or no residue removal), on no-till continuous corn …

Weed Control Efficacy Of Bio-Based Sprayable Mulch Films In Specialty Crop Systems, Eliott Gloeb

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

A sprayable bio-based mulch film (biofilm) could present a more sustainable weed management tool for specialty crop producers than conventional plastic mulch films while also offering flexibility in application patterns and timing. From 2017 to 2019, six greenhouse trials and four field trials were conducted at the University of Nebraska-Lincoln to study the effects of biofilm application on weed suppression and crop yields. Multiple application rates (0.81 L/m² - 9.78 L/m²) and application times (prior to weed emergence and post weed emergence) were tested. Corn starch, glycerol, keratin hydrolysate, corn gluten meal, corn zein, and isolated soy …

Effects Of Endophyte Infection On The Response Of Achnatherum Inebrians To Water Stress And Nitrogen Fertilizer Under Controlled Growth Conditions, X. S. Li, X. Z. Zhang, X. Gu

IGC Proceedings (1977-2023)

No abstract provided.

Contribution Of Vegetative Reproducton Of Leymus Chinensis And Carex Duriuscula To Population Persistence During Restoration Succession After Flood Disturbance In The Songnen Plains, China, Haiyan Li, Yunfei Yang

IGC Proceedings (1977-2023)

No abstract provided.

Root System Ecology Of Shrubs In Qilian Mountains Alpine Rhododendron Shrubland, Wenxia Cao, Degang Zhang, Fuzeng Hong

IGC Proceedings (1977-2023)

No abstract provided.

Sustainable Recultivation And Land Use On Karst Regions--Shrub System, Z. Q. Lai, S, M. Qin, Y. R. Chen, S. Z. Qin, M. Pogacnik, X. F. Yi, N. Yao, Y. L. Liang, D. Kompan, X. Su

IGC Proceedings (1977-2023)

No abstract provided.

Sustainable Recultivation And Land Use On Karst Regions--Pasture System, Z. Q. Lai, Y. R. Chen, M. Pogacnik, S. Z. Qin, X. F. Yi, N. Yao, Y. L. Liang, J. H. Deng, X. F. Zhang, B. Zhang, H. J. Zhong, D. Kompan, X. J. Lu, X. Su, D. Y. Shen

IGC Proceedings (1977-2023)

No abstract provided.

A Model For Managing An Endangered Species In Sandhills Rangeland, Kay L. Kottas, James Stubbendieck

IGC Proceedings (1977-2023)

No abstract provided.

Characterizing Variation In Nitrogen Use Efficiency In Wheat Genotypes Using Proximal Canopy Sensing For Sustainable Wheat Production, Mohammed A. Naser, Raj Khosla, Louis Longchamps, Subash Dahal

Department of Agronomy and Horticulture: Faculty Publications

Global nitrogen use efficiency (NUE) for cereal production is marginal and is estimated to be about 33%. Remote sensing tools have tremendous potential for improving NUE in crops through efficient nitrogen management as well as the identification of high-NUE genotypes. The objectives of this study were (i) to identify and quantify the variation in NUE across 24 winter wheat genotypes (Triticum aestivum L.) and (ii) to determine if the normalized difference vegetation index (NDVI) could characterize the variability in NUE across wheat genotypes. This study was conducted in 2010 and 2011 in the semi-arid climate of Northeastern Colorado across dryland …

Experimental Increases In Diversity And Evenness Improve Productivity And Reduce Weed Invasion In Grassland Swards Over Three Years Across 12 European Sites, Laura Kirwan, Caroline Brophy, R. P. Collins, J. Connolly, J. A. Finn, A. Helgadottir, Andreas Lüscher, C. Porqueddu, M. T. Sebastià

IGC Proceedings (1977-2023)

No abstract provided.

Fire And Vegetation Change In Coastal Grasslands, South Africa, Kevin P. Kirkman, B. P. A. Dalton

IGC Proceedings (1977-2023)

No abstract provided.

Studies On The Autecology Of Astragalus Caragana F. Et M In The Esfahan Province In Ira, M. Khodagholi, M. Esmaili Sharif, A. Ghaedi, M. Borhand, M. T. Feyze

IGC Proceedings (1977-2023)

No abstract provided.

The Acacia Operation Project: A Pilot Activity For Combating Desertification And Improving The Livelihood Of Pastoralist In The Arid Rangelands Of Kenya, George A. Keya, M. Muga, B. Chikamai

IGC Proceedings (1977-2023)

No abstract provided.

Impacts Of Grazing, Wildfire And Drought On Rodent Populations In A Semi-Arid Grassland Of Southwestern North America, L. J. Kennedy, Z. F. Jones, C. E. Bock, J. H. Bock

IGC Proceedings (1977-2023)

No abstract provided.

Stability, Recovery, And Resilience In Piosphere Systems In The Kruger National Park, Katherine J. Matchett, Kevin P. Kirkman, Craig D. Morris, Mike J. Peel

IGC Proceedings (1977-2023)

No abstract provided.

Contribution Of Lucerne And Red Clover To Succeeding Cereal Crops Yield, Žydrė Kadžiulienė, Zenonas Dabkevičius, Lina Šarūnaitė, Leonas Kadžiulis

IGC Proceedings (1977-2023)

No abstract provided.

The Effect Of Environmental Factors On Plant Species Diversity And Productivity, K. H. Li, Y. K. Hu, C. F. Lu, W. M. E. Wu, W. L. Li

IGC Proceedings (1977-2023)

No abstract provided.

Temporal And Spatial Variation Of Arbuscular Mycorrhizal Fungi Spores In Seasonally Salt Stressed Grassland Using Medicago Sativa For Reclamation In Hexi Corridor, China, Liang Jin, Chang Wang, Guoliang Chen, Yin Zhao, Xiangwei Sun, Xiaojuan Wang

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Long‐Term Salt Stress On Antioxidative Enzyme Activities Of Nypa Forage (Distichlis Spicata Var. Yensen‐4a) And Tall Fescue (Festuca Arundinacea Schreb), Yaxiong Jia, Xianglin Li, Liqiang Wan, Feng He

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Various Cattle Grazing Regimes On Vernal Pool Grassland Diversity, J. T. Marty

IGC Proceedings (1977-2023)

No abstract provided.

Impacts Of Long-Term Phosphorus Fertilization And Addition Of Perennial Legumes On A Temperate Natural Grassland: I. Changes In Spieces Biodiversity And Stability, Martín Jaurena, Walter Ayala, José Terra, Raül Bermudez, Ethel Barrios, Ximena Lagomarsino

IGC Proceedings (1977-2023)

No abstract provided.