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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 2022 University of Nebraska–Lincoln

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

Agronomy & 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 ...


A Brief Review Of The Impact Of Silver Nanoparticles On Agriculture And Certain Biological Properties: A Case Study, Sushmashree Krishnappa, Shankramma Kalikeri, Raj Kumar H. Garampalli, Lingaraju H G, Charan Kumar Kachintaya 2022 Division Nanoscience and Technology, School of Natural Sciences, JSS Academy of Higher Education and Research, Sri Shivarathreeshwara Nagara, Mysuru – 570 015, Karnataka, India.

A Brief Review Of The Impact Of Silver Nanoparticles On Agriculture And Certain Biological Properties: A Case Study, Sushmashree Krishnappa, Shankramma Kalikeri, Raj Kumar H. Garampalli, Lingaraju H G, Charan Kumar Kachintaya

International Journal of Health and Allied Sciences

Nanotechnology is progressively becoming a popular field of research because it has been successful in changing our agricultural and food systems. According to research published by the UNFAO, agriculture as well as its derivatives would be in high demand sooner or later, owing to nutritional changes. Nanoparticles have been reported to be used in an agricultural sector, because of its capacity to encourage crop growth and yield. Among metal nanoparticles, Silver Nanoparticles (AgNPs) are attracting a lot of attention. We have highlighted some of the agricultural uses of AgNPs, which include pest management, plant disease detection, crop enhancement, and crop ...


Arkansas Wheat Performance Tests 2021-2022, J. F. Carlin, R. B. Morgan, R. D. Bond, D. E. Moon 2022 University of Arkansas, Fayetteville

Arkansas Wheat Performance Tests 2021-2022, J. F. Carlin, R. B. Morgan, R. D. Bond, D. E. Moon

Arkansas Agricultural Experiment Station Research Series

Wheat variety performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture’s Arkansas Agricultural Experiment Station, Department of Crop, Soil, and Environmental Sciences. The tests provide information to companies developing varieties and marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating variety recommendations for small-grain producers. The tests are conducted at the Northeast Research and Extension Center at Keiser, the Vegetable Substation near Kibler, the Lon Mann Cotton Research Station near Marianna, the Pine Tree Research Station near Colt, and the Rohwer Research Station near Rohwer. Specific ...


Summaries Of Arkansas Cotton Research 2021, Fred Bourland 2022 University of Arkansas, Fayetteville

Summaries Of Arkansas Cotton Research 2021, Fred Bourland

Arkansas Agricultural Experiment Station Research Series

While the basic growth and development of the cotton plant have not changed significantly in recent history, the business of cotton production is ever-changing. The last two years have seen us plant a crop just about as late as we thought possible, yet extended favorable conditions at season's end have been our salvation, helping to lead us to record yields. The economic environment over the last few years has been such that farmers need to produce record or near-record yields to advance. Unfortunately, production levels at the state yield average barely cover out-of-pocket expenses.

Great uncertainties exist for the ...


Western Australia's Bulk And Containerised Grain Exports In A National Context, Ross Kingwell, Dipesh Maharjan 2022 University of Western Australia

Western Australia's Bulk And Containerised Grain Exports In A National Context, Ross Kingwell, Dipesh Maharjan

Research Reports

This report describes containerised and bulk grain exports from Western Australia and all other main grain-producing Australian states. The types of grain, their export volumes and destinations, since 2011-12 until 2021-22 are described.


Utilizing Rnai Technology To Develop Novel Agricultural Pesticides, Ethan B. Zand 2022 Western

Utilizing Rnai Technology To Develop Novel Agricultural Pesticides, Ethan B. Zand

Undergraduate Student Research Internships Conference

A general description of why RNAi based pesticide technology is a breakthrough technology able to target only pests while not harming others. This presentation gives a summary of RNAi technology, the current drawbacks of conventional pesticides, and our research on how RNAi can be used against the two-spotted spidermite; a polyphagic pest that causes significant financial damage to Canadian and worldwide agriculture


A Bacterial Microbiome Analysis Of Solarized Ginseng Garden Soils, Anka Colo 2022 Western University

A Bacterial Microbiome Analysis Of Solarized Ginseng Garden Soils, Anka Colo

Undergraduate Student Research Internships Conference

American ginseng (Panax quinquefolius) is a highly valued perennial crop grown for its roots during a four-year cultivation cycle. American ginseng is subject to ginseng replant disease (GRD) in which severe root rot develops in newly planted ginseng grown in a former ginseng garden. A common strategy to mitigating GRD is not available and techniques such as fumigation, fungicides, and biocontrol are ineffective, banned, or are slowly being phased out. Alternatively, soil solarization is a pre-plant technique used to treat soil to reduce disease inoculum and alter soil microbiomes. In summer 2019, a six-week soil solarization experiment was conducted in ...


Mycorrhizae In Maize (Zea Mays L.) Cropping Systems Respond Differently To Nitrogen Fertilization Under Increasing Crop Rotational Diversity, Morgan McPherson 2022 University of Nebraska-Lincoln

Mycorrhizae In Maize (Zea Mays L.) Cropping Systems Respond Differently To Nitrogen Fertilization Under Increasing Crop Rotational Diversity, Morgan Mcpherson

Theses, Dissertations, and Student Research in Agronomy and Horticulture

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 ...


Corn (Zea Mays L.) Production In Living Mulch Systems, Grazing Potential, And Economic Viability, Marcia Peireira Quinby 2022 University of Tennessee, Knoxville

Corn (Zea Mays L.) Production In Living Mulch Systems, Grazing Potential, And Economic Viability, Marcia Peireira Quinby

Doctoral Dissertations

Living mulch (LM) is a practice in which forages are grown simultaneously with the main crop, serving as a living cover throughout the growing season. The LM systems were developed to alleviate concerns of soil depletion and finding ways to reduce tillage negative effects on soil productivity. In addition, when legumes are use can decrease the reliance on N fertilizer. The use of corn in LM have been previously studied due to the crop being a large commodity in the U.S.; In addition, the ability to graze the LM after corn production can increase the land use efficiency. To ...


Potassium Level Prediction Of Peach Tree Leaves Using A Hyperspectral Camera And Multivariate Analysis, Megan Io Ariadne Salimbangon Abenina 2022 Clemson University

Potassium Level Prediction Of Peach Tree Leaves Using A Hyperspectral Camera And Multivariate Analysis, Megan Io Ariadne Salimbangon Abenina

All Theses

The use of hyperspectral imaging is a valuable piece of technology used in precision agriculture. Hyperspectral imaging system could help farmers and researchers alike in analyzing tissue samples quicker compared to the current way of running a plant tissue analysis on the different nutrient levels that often takes time in generating results. The objective of this research was to measure the potassium level of peach trees using its leaves with a hyperspectral camera. The Senop HSC-2 was used to capture images of peach tree leaves during the fall of 2020 and 2021. The collected data were used to create a ...


The Genetic Basis For Panicle Trait Variation In Switchgrass (Panicum Virgatum), Li Zhang, Alice MacQueen, Xiaoyu Weng, Kathrine D. Behrman, Jason Bonnette, John L. Reilley, Francis M. Rouquette, Philip A. Fay, Yanqi Wu, Felix B. Fritschi, Robert B. Mitchell, David B. Lowry, Arvid R. Boe, Thomas E. Juenger 2022 The University of Texas at Austin

The Genetic Basis For Panicle Trait Variation In Switchgrass (Panicum Virgatum), Li Zhang, Alice Macqueen, Xiaoyu Weng, Kathrine D. Behrman, Jason Bonnette, John L. Reilley, Francis M. Rouquette, Philip A. Fay, Yanqi Wu, Felix B. Fritschi, Robert B. Mitchell, David B. Lowry, Arvid R. Boe, Thomas E. Juenger

Agronomy & Horticulture -- Faculty Publications

Key message: We investigate the genetic basis of panicle architecture in switchgrass in two mapping populations across a latitudinal gradient, and find many stable, repeatable genetic effects and limited genetic interactions with the environment. Abstract: Grass species exhibit large diversity in panicle architecture influenced by genes, the environment, and their interaction. The genetic study of panicle architecture in perennial grasses is limited. In this study, we evaluate the genetic basis of panicle architecture including panicle length, primary branching number, and secondary branching number in an outcrossed switchgrass QTL population grown across ten field sites in the central USA through multi-environment ...


Optimization Of Nozzle, Application Height, And Speed For Uass Pesticide Applications, Trenton Houston 2022 University of Nebraska-Lincoln

Optimization Of Nozzle, Application Height, And Speed For Uass Pesticide Applications, Trenton Houston

Theses, Dissertations, and Student Research in Agronomy and Horticulture

Unmanned aerial spray systems (UASS) applications have the potential to be efficient pesticide application platforms under conditions that are not accessible or fit for typical pesticide application equipment. Although this type of application is still under development in the U.S., UASS pesticide applications are common in Asia, as they have replaced backpack sprayers. There is limited literature on the optimization of UASS applications and many parameters need to be investigated to identify the best combination of application variables such as flight height, flight speed, and nozzle selection. The objectives were to identify the deposition patterns of a four rotor ...


Promote Deep Integration Of Innovation Chain And Industry Chain By Improving National Innovation Systems Of Crop Seed Industry, Ruimin PEI, Chao ZHANG, Kaihua CHEN, Xuemei WEI 2022 Institutes of Science and Development, Chinese Academy of Sciences, Beijing 100190, China School of Public Policy and Management, University of Chinese Academy of Sciences, Beijing 100049, China

Promote Deep Integration Of Innovation Chain And Industry Chain By Improving National Innovation Systems Of Crop Seed Industry, Ruimin Pei, Chao Zhang, Kaihua Chen, Xuemei Wei

Bulletin of Chinese Academy of Sciences (Chinese Version)

Under the new situation, expanding and strengthening the crop seed industry and ensuring food security have been elevated to the national strategic importance. It urgently needs to improve the crop seed national innovation system and promote the deep integration of the innovation chain and industrial chain. The crop seed industry in developed countries such as the United States has formed a relatively mature industrial innovation system dominated by enterprises; however, China's crop seed industry innovation system is large but weak, the seed industry innovation efficiency is low, and the innovation ecology of the innovation chain and the industrial chain ...


Characterization And Selection Of Hop Cultivars Adapted To Nebraska, Kristina Alas 2022 University of Nebraska-Lincoln

Characterization And Selection Of Hop Cultivars Adapted To Nebraska, Kristina Alas

Theses, Dissertations, and Student Research in Agronomy and Horticulture

Hop (Humulus lupulus L.) is an ingredient in the beer brewing industry that provides beer its flavor and aroma. High demand from the brewing industry has encouraged production outside of the traditional Pacific Northwest, the primary production region. Producers in the Midwest are attempting to grow cultivars adapted to the Pacific Northwest, but environmental differences have caused low yields and changes in secondary metabolite content. To aid producers, a regional breeding program was initiated to develop cultivars adapted to the Midwest. Success of any breeding program relies on the selection of genetically superior parents to generate progeny with the traits ...


Dicamba Tank Mixtures And Formulations And Their Effects On Sensitive Crops During Cleanout Procedures, Vinicius Velho 2022 University of Nebraska-Lincoln

Dicamba Tank Mixtures And Formulations And Their Effects On Sensitive Crops During Cleanout Procedures, Vinicius Velho

Theses, Dissertations, and Student Research in Agronomy and Horticulture

The introduction of dicamba-tolerant (DT) soybeans (Glycine max L. Merr) and cotton (Gossypium hirsutum L) in 2017 provided an additional tool for herbicide resistant weeds management. In the subsequent years, off-target movement of dicamba allegedly caused damage to sensitive crops and vegetation.

Possible causes of off-target movement include tank contamination, physical drift, and volatility. Additional products, such as herbicides to control grass, are often added to tank with dicamba, which is used to control broadleaf weeds, to increase the spectrum of control and application efficiency. Dicamba products registered for DT crops require the use of drift reducing agents to mitigate ...


Prediction Of Cultivation Areas For The Commercial And An Early Flowering Wild Accession Of Salvia Hispanica L. In The United States, Mohammad Hassani, Thomas Piechota, Hagop S. Atamian 2022 Chapman University

Prediction Of Cultivation Areas For The Commercial And An Early Flowering Wild Accession Of Salvia Hispanica L. In The United States, Mohammad Hassani, Thomas Piechota, Hagop S. Atamian

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Salvia hispanica L., commonly known as chia, is a plant-based alternative to seafood and is rich in heart-healthy omega-3 fatty acid, protein, fiber, and antioxidants. In the Northern Hemisphere, chia flowering is triggered by the fall equinox (12-h light and dark, early October) and the seeds mature after approximately three months. Chia is sensitive to frost and end of season moisture which limits its cultivation to small areas in regions with temperate climate. The U.S. chia import has increased considerably over the years; however, chia is not widely cultivated in the United States. This study used the historical U ...


Cover Cropping: Sensor-Based Estimations Of Biomass Yield And Nutrient Uptake And Its Impact On Sugarcane Productivity, Hector H. Fajardo Duran 2022 Louisiana State University

Cover Cropping: Sensor-Based Estimations Of Biomass Yield And Nutrient Uptake And Its Impact On Sugarcane Productivity, Hector H. Fajardo Duran

LSU Master's Theses

Sugarcane in Louisiana can be harvested for up to three years from one planting. Soil cultivation along sides of established beds is done for weed control and improve fertilizer use efficiency which increases the risk of soil degradation and yield decline. Planting cover crops (CC) is a soil conservation practice and an effective strategy to improve soil health and nutrient recycling. Limited work has been done on remote sensor-based evaluation of the potential nutrient benefits from cover crops and its effect on nutrient cycling on sugarcane systems. This study was conducted to evaluate the effect of two planting methods (broadcast ...


Helping Utah Landowners Reduce Pesticide Use Through A Statewide Ipm Program, Nick Volesky, Mair Murray 2022 Utah State University

Helping Utah Landowners Reduce Pesticide Use Through A Statewide Ipm Program, Nick Volesky, Mair Murray

Outcomes and Impact Quarterly

The Utah Integrated Pest Management (IPM) program provides outreach and education to Utahns to reduce pesticide use and ultimately protect human and environmental health. In 2022, the IPM program responded to stakeholders’ needs by partnering with county Extension offices to deliver eight (8) in-person workshops across the state. The workshops connected Extension specialists and county faculty with managers of home landscapes and farms. The objective of the workshops was to provide participants with IPM skills to identify, monitor, and manage pest problems in preparation for the upcoming growing season.


Valuation Of Soil Health Ecosystem Services. Vermont Payment For Ecosystem Services Technical Research Report #5, Benjamin Timothy Dube, Alissa C. White, Taylor H. Ricketts, Heather M. Darby 2022 University of Vermont

Valuation Of Soil Health Ecosystem Services. Vermont Payment For Ecosystem Services Technical Research Report #5, Benjamin Timothy Dube, Alissa C. White, Taylor H. Ricketts, Heather M. Darby

UVM Extension Faculty Publications

In this report, we present estimates for ecosystem services from soil health using two approaches for four different services. One approach generates estimates based on soil-health practices, and the other approach is based on improvements in soil-health indicators. For soil- health practices, such as adopting best-management practices on annual corn, we utilize a set of off-the shelf empirical models widely used to estimate ecological functions on farm landscapes. For soil-health indicators, we make estimates by linking these tools with soil data and statistical models describing how soil-health parameters influence the interaction of soils with water and their environment. We provide ...


Whole Farm Net Zero: Approaches To Quantification Of Climate Regulation Ecosystem Services At The Whole Farm Scale. Vermont Payment For Ecosystem Services Technical Report #7, Christopher Bonasia, Lindsey Ruhl, Benjamin Timothy Dube, Alissa C. White, Heather M. Darby 2022 University of Vermont

Whole Farm Net Zero: Approaches To Quantification Of Climate Regulation Ecosystem Services At The Whole Farm Scale. Vermont Payment For Ecosystem Services Technical Report #7, Christopher Bonasia, Lindsey Ruhl, Benjamin Timothy Dube, Alissa C. White, Heather M. Darby

UVM Extension Faculty Publications

In this report, approaches to the quantification of climate mitigation ecosystem services at the whole farm scale are reviewed and summarized for easy comparison. Eight quantification tools, and three case studies demonstrating possible tool applications, are summarized to fulfill the requirements of the Technical Services Contract—Task 7. Information from a combination of literature review and expert interviews served to document the inputs, outputs, strengths, weaknesses, opportunities, and threats for each quantification tool. This research was conducted in service to the Vermont Soil Health and Payment for Ecosystem Services (PES) Working Group (VT PES working group). It is our hope ...


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