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Articles 1 - 10 of 10
Full-Text Articles in Plant Sciences
Effects Of Soil Management Practices On Water Infiltration And Maize Yield To Improve Mississippi River Valley Alluvial Aquifer Sustainability, Jacob Rix
Theses and Dissertations
Surface sealing and hardpans in loam soils are problematic in the Mid-South U.S. because of intense tillage. Two experiments quantified the effects of soil management practices on infiltration and maize yield in loam soils. The first study measured the impacts of in-row subsoiling frequency × furrow irrigation frequency. In-row subsoiling significantly improved the infiltration of irrigation but not the infiltration of precipitation. In-row subsoiling with low irrigation frequency is optimal to achieve profitable maize yields while encouraging groundwater conservation. In the second study, six soil management treatments were imposed. For single-ring infiltrometer tests, infiltration rates were different between the two …
A Glass Bead Semi-Hydroponic System For Intact Maize Root Exudate Analysis And Phenotyping, Martha G. Lopez-Guerrero, Peng Wang, Felicia Phares, Daniel P. Schachtman, Sophie Alvarez, Karin V. Van Dijk
A Glass Bead Semi-Hydroponic System For Intact Maize Root Exudate Analysis And Phenotyping, Martha G. Lopez-Guerrero, Peng Wang, Felicia Phares, Daniel P. Schachtman, Sophie Alvarez, Karin V. Van Dijk
Department of Agronomy and Horticulture: Faculty Publications
Background: Although there have been numerous studies describing plant growth systems for root exudate collection, a common limitation is that these systems require disruption of the plant root system to facilitate exudate collection. Here, we present a newly designed semi-hydroponic system that uses glass beads as solid support to simulate soil impedance, which combined with drip irrigation, facilitates growth of healthy maize plants, collection and analysis of root exudates, and phenotyping of the roots with minimal growth disturbance or root damage. Results: This system was used to collect root exudates from seven maize genotypes using water or 1 mM CaCl2, …
Mycorrhizae In Maize (Zea Mays L.) Cropping Systems Respond Differently To Nitrogen Fertilization Under Increasing Crop Rotational Diversity, Morgan Mcpherson
Mycorrhizae In Maize (Zea Mays L.) Cropping Systems Respond Differently To Nitrogen Fertilization Under Increasing Crop Rotational Diversity, Morgan Mcpherson
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Arbuscular mycorrhizal fungi (AMF) remain a vital obligate symbiont of nearly all plants. It is well established that the symbiosis between AMF and host plant improves plant nutrient acquisition, alleviates abiotic and biotic environmental stressors, defends against plant pathogens, and contributes to overall plant fitness and productivity through modification of the soil habitat. Modifications include increased soil aggregation and stability, carbon sequestration through provision of fungal wall precursors to soil organic matter (SOM) formation, and enhanced nutrient cycling in the mycorrhizosphere. The goal of this dissertation was to assess how AMF respond to nitrogen (N) fertilization regimes in maize cropping …
The Pho1;2a'-M1.1 Allele Of Phosphate1 Conditions Misregulation Of The Phosphorus Starvation Response In Maize (Zea Mays Ssp. Mays L.), Ana Laura Alonso-Nieves, M. Nancy Salazar-Vidal, J. Vladimir Torres-Rodríguez, Leonardo M. Pérez-Vázquez, Julio A. Massange-Sánchez, C. Stewart Gillmor, Ruairidh J. H. Sawers
The Pho1;2a'-M1.1 Allele Of Phosphate1 Conditions Misregulation Of The Phosphorus Starvation Response In Maize (Zea Mays Ssp. Mays L.), Ana Laura Alonso-Nieves, M. Nancy Salazar-Vidal, J. Vladimir Torres-Rodríguez, Leonardo M. Pérez-Vázquez, Julio A. Massange-Sánchez, C. Stewart Gillmor, Ruairidh J. H. Sawers
Center for Plant Science Innovation: Faculty and Staff Publications
Plant PHO1 proteins play a central role in the translocation and sensing of inorganic phosphate. The maize (Zea mays ssp. mays) genome encodes two co-orthologs of the Arabidopsis PHO1 gene, designated ZmPho1;2a and ZmPho1;2b. Here, we report the characterization of the transposon footprint allele Zmpho1;2a'-m1.1, which we refer to hereafter as pho1;2a. The pho1;2a allele is a stable derivative formed by excision of an Activator transposable element from the ZmPho1;2a gene. The pho1;2a allele contains an 8-bp insertion at the point of transposon excision that disrupts the reading frame and is predicted to …
Association Mapping Across A Multitude Of Traits Collected In Diverse Environments In Maize, Ravi V. Mural, Guangchao Sun, Marcin Grzybowski, Michael C. Tross, Hongyu Jin, Christine Smith, Linsey Newton, Carson M. Andorf, Margaret R. Woodhouse, Addie M. Thompson, Brandi Sigmon, James C. Schnable
Association Mapping Across A Multitude Of Traits Collected In Diverse Environments In Maize, Ravi V. Mural, Guangchao Sun, Marcin Grzybowski, Michael C. Tross, Hongyu Jin, Christine Smith, Linsey Newton, Carson M. Andorf, Margaret R. Woodhouse, Addie M. Thompson, Brandi Sigmon, James C. Schnable
Center for Plant Science Innovation: Faculty and Staff Publications
Classical genetic studies have identified many cases of pleiotropy where mutations in individual genes alter many different phenotypes. Quantitative genetic studies of natural genetic variants frequently examine one or a few traits, limiting their potential to identify pleiotropic effects of natural genetic variants. Widely adopted community association panels have been employed by plant genetics communities to study the genetic basis of naturally occurring phenotypic variation in a wide range of traits. High-density genetic marker data—18M markers—from 2 partially overlapping maize association panels comprising 1,014 unique genotypes grown in field trials across at least 7 US states and scored for 162 …
Quantifying The Effects Of Abiotic Stress On Early Season Growth, Development, And Physiological Characteristics In Corn, Charles Hunt Walne
Quantifying The Effects Of Abiotic Stress On Early Season Growth, Development, And Physiological Characteristics In Corn, Charles Hunt Walne
Theses and Dissertations
Corn is one of American agriculture's greatest success stories, where we have witnessed incredible increases in yield potential over the last half-century. However, abiotic stress is still the primary limiting factor preventing plants from reaching their true yield potential. In addition, agriculture is not exempt from the deleterious effects of changing weather patterns and the altered climate our world will face as time progresses. Thus, increasing our understanding of how crops interact with their environment both above and below the soil will be crucial to increasing production on a global scale while maximizing profitability at a local level. Five studies …
Soil Carbon Accumulation Under Perennial Forage Grasses In The Southern Highlands Of Tanzania, S. S. Nyawira, P. Birthe, M. J. Korir, B. Nzogela, A. O. Notenbaert
Soil Carbon Accumulation Under Perennial Forage Grasses In The Southern Highlands Of Tanzania, S. S. Nyawira, P. Birthe, M. J. Korir, B. Nzogela, A. O. Notenbaert
IGC Proceedings (1997-2023)
Land degradation caused by the loss of SOC in continuously cultivated agricultural systems is a major problem in many sub-Saharan Africa countries. The integration on perennial forage grasses in cropping systems has the potential to enhance SOC sequestration. The main objective of this study is to compare soil organic carbon (SOC) under perennial forages with SOC under annual food crops, specifically maize (Zea mays). A survey was conducted in Njombe district in the Southern Highlands of Tanzania to identity farmers with planted forages that are more than five years old and with neighbouring maize plots. Survey results identified …
The Relationship Between Grassland Composition On Stemborer Abundance On Grasses Surrounding Maize Farms, Nelima Maryselah, Mutyambai M. Daniel, Kuyah Shem, Netondo Godfrey, Mattias Jonsons
The Relationship Between Grassland Composition On Stemborer Abundance On Grasses Surrounding Maize Farms, Nelima Maryselah, Mutyambai M. Daniel, Kuyah Shem, Netondo Godfrey, Mattias Jonsons
IGC Proceedings (1997-2023)
Grasslands are known to host crop pests and may act as the reservoir of pests affecting maize production. This research aimed at determining the effect of grassland composition on abundance of stemborers on grasses sorrouding maize farms in western Kenya. The experimental set up followed a complete random block design (CRBD); with four elevations at Lambwe, Homabay, Luanda and Mt. Elgon assigned as blocks based on different altitudes. Sampling was done in two seasons, during the short rain season of 2019 and the long rain season of 2020. Grasslands surrounding four pairs of push-pull and non-push-pull maize farms were assessed. …
Yield Response To Nitrogen Management In A Corn-Soybean Sequence In North Central Kansas – 2021 Season, A. A. Correndo, O. Lanza Lopez, L. F. A. Almeida, I. A. Ciampitti
Yield Response To Nitrogen Management In A Corn-Soybean Sequence In North Central Kansas – 2021 Season, A. A. Correndo, O. Lanza Lopez, L. F. A. Almeida, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
The aim of this study was to evaluate the response of corn (Zea maysL.) grain yield to nitrogen (N) fertilizer application and its residual effect on soybean [Glycine max(L.) Merr.] seed yield. During the 2021 growing season, a corn-soybean rotation study was continued at Scandia, KS (USA), evaluating the effect of five N fertilizer rates (0, 53, 107, 161, and 214 lb N/a) applied in corn under both dryland and irrigated conditions. Average corn grain yields ranged from 124 to 147 bu/a for dryland, and from 159 to 203 bu/a for irrigated conditions. However, no significant …
How Relevant Is High-Cadence Earth Observation For Maize Crop Phenology Classification?, L. Nieto, R. Houborg, A. Zajdband, A. Jumpasut, P. V. Vara Prasad, B. J. S. C. Olson, I. A. Ciampitti
How Relevant Is High-Cadence Earth Observation For Maize Crop Phenology Classification?, L. Nieto, R. Houborg, A. Zajdband, A. Jumpasut, P. V. Vara Prasad, B. J. S. C. Olson, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Crop phenology can be defined as the study of biological processes such as emergence, flowering, and senescence that are associated with and affected by environmental growing conditions. The ability to reliably detect crop phenology and its spatial-temporal variability is critical for farmers, policymakers, and government agencies, since it has implications for the entire food chain. Currently, two methods are the most used to report crop phenology. Land surface phenology provides insight into the overall trend, whereas USDA-NASS weekly reports provide insight into the development of specific crops at the regional level. High-cadence earth observations may be able to improve the …