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Articles 1 - 8 of 8
Full-Text Articles in Agriculture
Unmanned Aerial Vehicle Based Tree Canopy Characteristics Measurement For Precision Spray Applications, Md Sultan Mahmud, Long He, Paul Heinemann, Daeun Choi, Heping Zhu
Unmanned Aerial Vehicle Based Tree Canopy Characteristics Measurement For Precision Spray Applications, Md Sultan Mahmud, Long He, Paul Heinemann, Daeun Choi, Heping Zhu
Agricultural and Environmental Sciences Faculty Research
The critical components for applying the correct amount of agrochemicals are fruit tree characteristics such as canopy height, canopy volume, and canopy coverage. An unmanned aerial vehicle (UAV)-based tree canopy characteristics measurement system was developed using image processing approaches. The UAV captured images using a high-resolution red-green-blue (RGB) camera. A digital surface model (DSM) and a digital terrain model (DTM) were generated from the captured images. A tree canopy height map was generated from the subtraction of DSM and DTM. A total of 24 apple trees were randomly targeted to measure the canopy characteristics. Region of interest (ROI) was generated …
Comparative Transcriptomics Reveals Small Rna Composition And Differential Microrna Responses Underlying Interferon-Mediated Antiviral Regulation In Porcine Alveolar Macrophages, Jiuyi Li, Eric R. Sang, Oluwaseun Adeyemi, Laura C. Miller, Yongming Sang
Comparative Transcriptomics Reveals Small Rna Composition And Differential Microrna Responses Underlying Interferon-Mediated Antiviral Regulation In Porcine Alveolar Macrophages, Jiuyi Li, Eric R. Sang, Oluwaseun Adeyemi, Laura C. Miller, Yongming Sang
Agricultural and Environmental Sciences Faculty Research
Previous studies have shown that interferon-mediated antiviral activity is subtype-dependent. Using a whole transcriptome procedure, we aimed to characterize the small RNA transcriptome (sRNA-Seq) and specifically the differential microRNA (miRNA) responses in porcine alveolar macrophages (PAMs) upon antiviral activation during viral infection and interferon (IFN) stimulation. Data showed that near 90% of the qualified reads of sRNA were miRNAs, and about 10% of the other sRNAs included rRNA, snoRNA, snRNA, and tRNA in order of enrichment. As the majority of sRNA (>98%) were commonly detected in all PAM samples under different treatments, about 2% sRNA were differentially expressed between …
Building Soil By Building Community: How Can An Interdisciplinary Approach Better Support Community Needs And Urban Resilience, Erica L. Wohldmann, Yujuan Chen, Kirsten Schwarz, Susan D. Day, Richard V. Pouyat, Michelle Barton, Manny Gonez
Building Soil By Building Community: How Can An Interdisciplinary Approach Better Support Community Needs And Urban Resilience, Erica L. Wohldmann, Yujuan Chen, Kirsten Schwarz, Susan D. Day, Richard V. Pouyat, Michelle Barton, Manny Gonez
Agricultural and Environmental Sciences Faculty Research
Given the interrelated problems of climate change, energy and resource scarcity, and the challenge of supporting critical natural systems in cities, urban dwellers may be exceptionally vulnerable to the impacts of climate change. While a number of programs and policies have been developed and implemented to help reduce the environmental and social impacts of climate change on communities, we argue that effective and sustainable programs must not only consider how the changing environment impacts communities, but also how communities interact with and impact the environment. Specifically, drawing on a case study of the needs assessment of the Healthy Soils for …
Type Of Stress Induces Differential Responses In Acer Rubrum (Red Maple), But Induced Responses Have No Effect On Herbivorous Pests, Cindy Perkovich, Anthony Witcher, Grayson Delay, Karla Addesso
Type Of Stress Induces Differential Responses In Acer Rubrum (Red Maple), But Induced Responses Have No Effect On Herbivorous Pests, Cindy Perkovich, Anthony Witcher, Grayson Delay, Karla Addesso
Agricultural and Environmental Sciences Faculty Research
Plants thrive in dynamic environments requiring adaptive strategies in response to environmental stressors. Furthermore, insect herbivores may be attracted or deterred by the expression of these traits. This study examines growth, physiological, and phytochemical adaptations of maple trees in response to stressors and how these stressors effect herbivore feeding behavior within an agricultural production system. Agricultural systems are unique because plants experience environmental stressors unique to production such as herbicide sprays and girdling. Using four environmental stressors commonly observed in agricultural production (control, mechanical defoliation, chemical defoliation, and girdling), applied to two cultivars of red maple (Acer rubrum, ‘Brandywine’ and …
Responses Of Soil Heterotrophic Respiration And Microbial Biomass To Organic And Conventional Production Systems, Kripa Dhakal, Madhav Parajuli, Siyang Jian, Jianwei Li, Dilip Nandwani
Responses Of Soil Heterotrophic Respiration And Microbial Biomass To Organic And Conventional Production Systems, Kripa Dhakal, Madhav Parajuli, Siyang Jian, Jianwei Li, Dilip Nandwani
Agricultural and Environmental Sciences Faculty Research
The effects of organic and conventional production systems on crop productivity have been greatly explored, but their effects on soil microbial processes were often neglected. A comparative field study of organic and conventional production systems was conducted at the Tennessee State University research farm to determine soil heterotrophic respiration and microbial biomass carbon. Leafy green vegetables were grown in a conventional production system in an open field, and they were grown in an organic production system, using three different row covers (agribon cloth, insect net, and plastic), and in an open field. Soil samples (0-15cm) were collected from the two …
Agritourism As An Alternative On-Farm Enterprise For Small U.S. Farms: Examining Factors Influencing The Agritourism Decisions Of Small Farms, Reginald Holland, Aditya R. Khanal, Purushottam Dhungana
Agritourism As An Alternative On-Farm Enterprise For Small U.S. Farms: Examining Factors Influencing The Agritourism Decisions Of Small Farms, Reginald Holland, Aditya R. Khanal, Purushottam Dhungana
Agricultural and Environmental Sciences Faculty Research
This study examines the adoption of agritourism by small farms in the U.S. Using primary survey data collected from small farms in Tennessee in 2020, we assessed adopter characteristics and investigated the factors influencing the farmers’ decision to adopt or add agritourism-related activities, including recreational, educational, and touristic attractions in the farm. We found that factors such as social media marketing, smartphone use in farm activities, and having farm insurance significantly increased the likelihood of agritourism adoption in addition to other demographic factors. Additionally, we found that a farmer’s perceived survival risk positively influences small farms to adopt agritourism. Small …
Examining Farm Financial Management: How Do Small Us Farms Meet Their Agricultural Expenses?, Omobolaji Omobitan, Aditya R. Khanal
Examining Farm Financial Management: How Do Small Us Farms Meet Their Agricultural Expenses?, Omobolaji Omobitan, Aditya R. Khanal
Agricultural and Environmental Sciences Faculty Research
Small farms in the US have significant challenges in financial management. This study examines how small farmers undertake farm financial management to meet their agricultural and farm-related spending and expenses. Using primary survey data from Tennessee, the study investigates the factors influencing the extent of use of five financing sources to meet the spending and expenses: cash/fund directly generated from the sale of agricultural products, farmer’s past savings, farm household’s off-farm income, income/incentives from government payments, and external loans. Using negative binomial regression estimation of generalized linear models, findings suggest that the decision on the use of financing sources is …
Reducing Tillage Affects Long-Term Yields But Not Grain Quality Of Maize, Soybeans, Oats, And Wheat Produced In Three Contrasting Farming Systems, Kirsten Ann Pearsons, Emmanuel Chiwo Omondi, Brad J. Heins, Gladis Zinati, Andrew Smith, Yichao Rui
Reducing Tillage Affects Long-Term Yields But Not Grain Quality Of Maize, Soybeans, Oats, And Wheat Produced In Three Contrasting Farming Systems, Kirsten Ann Pearsons, Emmanuel Chiwo Omondi, Brad J. Heins, Gladis Zinati, Andrew Smith, Yichao Rui
Agricultural and Environmental Sciences Faculty Research
Reducing tillage has been widely promoted to reduce soil erosion, maintain soil health, and sustain long-term food production. The effects of reducing tillage on crop nutritional quality in organic and conventional systems, however, has not been widely explored. One possible driver of crop nutritional quality might be the changing soil nitrogen (N) availability associated with reduced tillage in various management systems. To test how reducing tillage affects crop nutritional quality under contrasting conventional and organic farming systems with varied N inputs, we measured nutritional quality (protein, fat, starch, ash, net energy, total digestible nutrients, and concentrations of Ca, K, Mg, …