Agronomy and Crop Sciences Commons^™

Invasive Grassland‐Rangeland Plants Of China And The United States Of America, John H. Brock, Jinguo Wu

IGC Proceedings (1977-2023)

No abstract provided.

Forage Quality Of Five Important Grasses At Sar‐Aliabad Summer Rangelands In Golestan Province, Iran, S. A. Hosseini, M. Mesdaghi

IGC Proceedings (1977-2023)

No abstract provided.

Comparison Of The Acid Detergent Lignin (Adl) Among Seven Populations Of Lespedeza Davurica, Xiang Zhao, Kuanhu Dong, Yi Xing

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Cultivar, Row Spacing And Seeding Rate On Alfalfa Hay Yield, Zehong Zhang, Fuyuan Liu, Yunwen Wang, Tiejun Zhang

IGC Proceedings (1977-2023)

No abstract provided.

Net Photosynthesis Rate And Transpiration Rate Of Algonquin In Different Growth Years, Lijun Xu, B. Wang, Q. Z. Sun

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Additives On The Alfalfa Fibrous Residues Silage Quality, Yanlin Xue, Z. Yu, C. S. Bai, Q. F. Xu

IGC Proceedings (1977-2023)

No abstract provided.

The Influence Of The Grassland Management On Fodder Quality, V. Vintu, C. Samuil, T. Iacob, Alina Trofin, C. I. Popovici

IGC Proceedings (1977-2023)

No abstract provided.

Changes In Herbage Quality Of Cocksfoot, Prairie Grass And Tall Fescue During Regrowth, Lydia R. Turner, J. R. Roche, Danny J. Donaghy, Richard P. Rawnsley

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Cutting Frequency On Silage Making From Napier Grasses In Thailand, Sayan Tudsri, Suwance Ketkumalat, Sunantha Jantakool, Sunee Sintu

IGC Proceedings (1977-2023)

No abstract provided.

The Dynamic Changing Of Soluble Sugar In Different Alfalfa Varieties, Ya Tao, Q. Zh. Sun

IGC Proceedings (1977-2023)

No abstract provided.

Understanding Producers’ Perspectives On Rotational Grazing Benefits Across Us Great Plains, Tong Wang, Hailong Jin, Urs Kreuter, Richard Teague

Economics Faculty Publications

Experimental findings on rotational grazing (RG) trials have generally differed from producer observations of RG outcomes on commercial scale ranches. Factors such as small plot size, short duration trials and relatively rigid grazing management that lacks responsiveness to the dynamic and complex social-ecological systems in grazing trials could all contribute to this disparity in outcomes. These differences call for a better understanding of producer perceptions of RG benefits. To fill this knowledge gap, we surveyed 4500 producers from the Northern and Southern Great Plains of the USA. Among the 875 respondents, 40.5% reported that they used continuous grazing (CG), 52.7% …

Rhizosphere Microbiomes In A Historical Maize-Soybean Rotation System Respond To Host Species And Nitrogen Fertilization At The Genus And Subgenus Levels, Michael A. Meier, Martha G. Lopez-Guerrero, Ming Guo, Marty Schmer, Josh Herr, James Schnable, James R. Alfano, Jinliang Yang

Department of Agronomy and Horticulture: Faculty Publications

Root-associated microbes are key players in plant health, disease resistance, and nitrogen (N) use efficiency. It remains largely unclear how the interplay of biological and environmental factors affects rhizobiome dynamics in agricultural systems. In this study, we quantified the composition of rhizosphere and bulk soil microbial communities associated with maize (Zea mays L.) and soybean (Glycine max L.) in a long-term crop rotation study under conventional fertilization and low-N regimes. Over two growing seasons, we evaluated the effects of environmental conditions and several treatment factors on the abundance of rhizosphere- and soil-colonizing microbial taxa. Time of sampling, host plant species, …

Using Thermal Imaging To Measure Water Stress In Creeping Bentgrass Putting Greens, Joseph G. Foral Jr.

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

Thermal imaging is a developing tool that can help turf managers reduce water consumption and improve irrigation scheduling, but in-depth studies are needed to maximize this potential. This study evaluated the ability of thermal imaging to identify water stress in a creeping bentgrass (Agrostis stolonifera ‘007’) putting green. Water use and canopy temperature (T_c) were measured for plots subjected to three levels of measured water replacement (full, half, and none) to evaluate changes over a range of soil water potentials (SWP). Water use was consistent across the irrigation treatments up to several days before observed wilt …

Phenotyping Anther Extrusion Of Wheat Using Image Analysis, Zachary James Winn, Dylan Lee Larkin, Jamison Trey Murry, David Earl Moon, Richard Esten Mason

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Phenotyping wheat (Triticum aestivum L.) is time-consuming and new methods are necessary to decrease labor. To develop a heterotic pool of male wheat lines for hybrid breeding, there must be an efficient way to measure both anther extrusion and the size of anthers. Five hundred and ninety-four soft red winter wheat lines in two replications of randomized complete block design were phenotyped for anther extrusion, a key trait for hybrid wheat production. A device was constructed to capture images using a mobile device. Four heads were sampled per line when anthesis was evident for half the heads in the …

Environmental Factors Associated With Nitrogen Fixation Prediction In Soybean, Andre Froes Borja Reis, Luiz Moror Rosso, Larry C. Purcell, Seth Naeve, Shaun N. Casteel, Peter Kovacs, Sotirios Archontoulis, Dan Davidson, Ignacio A. Ciampitti

Agronomy, Horticulture and Plant Science Faculty Publications

No abstract provided.

Morphophysiological And Molecular Characterization Of Millet (Panicum Miliaceum L.) Varieties For Crop Improvement In Western Europe, Massimo Vischi, Nicola Zorzin, Maria Bernhart, Johanna Winkler, Dipak Santra, Carla Pappalardo, Stefano Marchetti

Department of Agronomy and Horticulture: Faculty Publications

Background

Global warming and issues in favour of a more sustainable agriculture suggest a reconsideration of minor cereals in European agrosystems. Compared to other summer crops, proso millet has a remarkable drought resistance and could be used to improve crop rotation and biodiversity. Proso millet is also increasingly sought by industry to produce novel foods such as those designed for celiac patients. In this study, a thorough characterization of 11, commercially available, proso millet (Panicum milliaceum L.) varieties was carried out as a preliminary step for crop reintroduction and breeding in Western Europe.

Methods

The cultivars under evaluation were …

Evaluation Of Masculinization Treatments To Produce Feminized Hemp Seed (Cannabis Sativa L.), Ted Fitzgerald, J. Wyatt Brown

Master's Theses

Cannabis sativa L. (hemp) develops plants with either male or female flowers, and growers of hemp greatly prefer female flowers which bear the glandular trichomes that contain cannabinoids. Feminized (all female) seeds are highly desired, which are produced by crossing a female plant with a masculinized female plant. Masculinization is achieved through the inhibition of ethylene and/or addition of gibberellins before flower initiation in female plants. The hemp industry uses silver thiosulfate (STS) to masculinize hemp, but spraying silver poses environmental concerns. This study compared STS to three other ethylene-inhibiting agents: aminoethoxyvinylglycine (AVG), cobalt nitrate (CBN), and 1-methylcyclopropene (1-MCP). Treatments …

Using Network-Based Machine Learning To Predict Transcription Factors Involved In Drought Resistance, Chirag Gupta, Venkategowda Ramegowda, Supratim Basu, Andy Pereira

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Gene regulatory networks underpin stress response pathways in plants. However, parsing these networks to prioritize key genes underlying a particular trait is challenging. Here, we have built the Gene Regulation and Association Network (GRAiN) of rice (Oryza sativa). GRAiN is an interactive query-based web-platform that allows users to study functional relationships between transcription factors (TFs) and genetic modules underlying abiotic-stress responses. We built GRAiN by applying a combination of different network inference algorithms to publicly available gene expression data. We propose a supervised machine learning framework that complements GRAiN in prioritizing genes that regulate stress signal transduction and …

A Research Road Map For Responsible Use Of Agricultural Nitrogen, Michael Udvardi, Frederick E. Below, Michael J. Castellano, Alison J. Eagle, Ken E. Giller, Jagdish Kumar Ladha, Xuejun Liu, Tai Mcclellan Maaz, Barbara Nova-Franco, Nandula Raghuram, G. Philip Robertson, Sonali Roy, Malay Saha, Susanne Schmidt, Mechthild Tegeder, Larry M. York, John W. Peters

Agricultural and Environmental Sciences Faculty Research

Nitrogen (N) is an essential but generally limiting nutrient for biological systems. Development of the Haber-Bosch industrial process for ammonia synthesis helped to relieve N limitation of agricultural production, fueling the Green Revolution and reducing hunger. However, the massive use of industrial N fertilizer has doubled the N moving through the global N cycle with dramatic environmental consequences that threaten planetary health. Thus, there is an urgent need to reduce losses of reactive N from agriculture, while ensuring sufficient N inputs for food security. Here we review current knowledge related to N use efficiency (NUE) in agriculture and identify research …

Improved Taste And Texture In Novel Popcorn Varieties Compared To Conventional Lines, Leandra Parsons, Oscar Rodriguez, David R. Holding

Department of Agronomy and Horticulture: Faculty Publications

Abstract Quality Protein Popcorn (QPP) varieties were bred out of a unique germplasm pool derived from Quality Protein dent Maize and conventional popcorn lines. To identify and compare distinctive characteristics within this population, a new sensory method was employed that coupled hedonic numeric rankings of common sensory traits appearance, aroma, texture, and taste with an “overall likability” score while requiring the selection of specific descriptors for taste and texture. Participants tasted six popcorn cultivars, rated each sample based on sensory factors, and offered specific descriptors for taste and texture. This sensory method identified two QPP hybrids with higher overall likability …