Agriculture Commons^™

Isolation And Identification Of Analgesic Effects Of The Lycopodium Japonicum Thunb Polysaccharide, Tian Jia-Bao, Xu De-Ping

Food and Machinery

Explore the analgesic effects and active components of Lycopodium japonicum Thunb. Ethanol extraction, water extraction and ethanol precipitation were used to obtain different extracts of Lycopodium japonicum Thunb. Using acetic acid writhing and hot plate models, using mouse writhing reaction time and licking rear feet time as indicators, the analgesic components were screened and analyzed by nuclear magnetism. The water extract of Lycopodium japonicum Thunb has analgesic effect. After further analysis and screening, it is found that the analgesic components of Lycopodium japonicum Thunb are polysaccharides. A single component polysaccharide is obtained from the crude polysaccharides, and its structure is …

Total Synthesis Of Lycopene Based On Dodecatrienal, Chen Guo, Yan Ri-An, Li Hai-Mei, Zhou Hua, Li Chun-Zhi

Food and Machinery

Diethyl [(1E,3E,5E)-2,6,10-trimethylundeca-1,3,5,9-tetraen-1-yl]phosphonate (9) was synthesized via a condensation between tetraethyl methylenebis(phosphonate) (7) and 6,10-dimethyl-3,5,9-undecatrien-2-one(8) by Wittig-Horner reaction, (3E,5E,7E)-3,8-dimethyldeca-3,5,7-trienedial (5) was prepared from (E)-tetraethyl but-2-ene-1,4-diylbis-(phosphonate)(2) and 4,4-dimethoxy-2-butanone (3) by Wittig-Horner reaction followed by hydrogenation. Lycopene was synthesized from diethyl [(1E,3E,5E)-2,6,10-trimethylundeca-1,3,5,9-tetraen-1-yl]phosphonate(9)and(3E,5E,7E)-3,8-dimethyldeca-3,5,7-trienedial(5) by Wittig-Horner reaction，the structure of products was confirmed by NMR, HRMS/GC-MS and IR techniques. The total yield was 16.7%.

Research Progress On Biological Activity And Molecular Mechanism Of Sea Cucumber Saponins, Zhong Jing-Shi, Zhang Jian, Liu Fang, Zhao Yun-Ping, Liu Kui, Wang Yi-Xin, Liu Hai-Chao, Wang Gong-Ming

Food and Machinery

In this review, the bioactivities and mechanisms of sea cucumber saponins, such as anti-tumor, anti-biofouling, atherosclerosis-improving, obesity-improving and obesity-related insulin resistance, Parkinson's disease-improving, osteoporosis-improv-ing and lifespan extension-promoting were summarized. Meanwhile, basic research, commercial application research and in-depth studies of sea cucumber saponins with modern technologies were also prospected.

Seasonal Variation In The Effects Of Urban Environmental Factors On Land Surface Temperature In A Winter City, Wen Wu, Lidong Li, Chunlin Li

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Environmental factors such as urban landscape patterns, local climate, topography, and socioeconomic conditions have significant impacts on land surface temperature (LST), especially through the urban heat island effect. At present, in-depth studies on the mechanisms determining LST in different seasons in winter cities are lacking. In this study, we used structural equation modeling for 12 environmental factors to characterize how these factors affect the temporal and spatial heterogeneity of the LST in the winter city of Shenyang, China. We found that the most critical factors affecting LST varied with season. Specifically, the distances from the nearest water body and nearest …

Small Farm Households' Vulnerabilities In South Cotabato, Philippines, Rosalina Palanca-Tan, Leonora F. Gio

Economics Department Faculty Publications

Low-productivity subsistence agriculture still prevails in many areas in the Philippines such as in the Municipality of Lake Sebu in the Province of South Cotabato in Mindanao. This study employs primary data collection methods; namely key informant interview (KII); focus group discussion (FGD) and a household survey to assess the conditions and problems constraining farming households in Lake Sebu. The study finds that constraints on sourcing and financing of farm inputs and on marketing of produce have perpetuated the dominating role of middlemen in agricultural financing and marketing that result in high input prices and low farm-gate output prices; and …

Impact Of Winter Cover Crops And Nitrogen Recommendations For Corn-Soybean Rotation In Northeast Arkansas, Brayden William Burns

Student Theses and Dissertations

Research plots were established on production farms in no-tillage, corn-soybean rotations following a winter cover crop. Independent variables included fertilizer N-application (0, 62, 124, 185, 247 and 309 kg N ha-1) and the presence or absence of a winter cover crop. Yield optimum nitrogen rates (YONR) estimated using linear plateau models ranged from 69.7 to 214.1 kg N ha-1, well below the University of Arkansas’ recommendation of 247 kg N ha-1. Relative to these YONRs, dynamic N-recommendation systems like N-Star, and pre-sidedress available nitrogen (PSAN) reduced recommended N-application rate with little risk of insufficient N-supply. Other recommendations like the Soil …

Investigation Of The State Of Dna Methylation In High And Low Protein Accumulating Maize Lines, Akash Lal

Student Theses and Dissertations

Transgenic plant-based production for industrial enzymes is an evolutionary tool. Green bio- factories have powerful potential to produce desirable product on the most economical and efficient level. Seed itself provides protein a very stable environment, solving the problem of storage. Transgenic plants easily scale up production. Increasing population, climate change and low amounts of arable land create a damaging situation for which a plant-based production system is beneficial. The transgenic plant-based production system rather than microbial fermentation is a solution for this rising scenario. Epigenetics is a natural phenomenon which causes heritable changes in gene expression alternative to the involvement …

2021 Women In Agriculture Conference, Jessica J. Groskopf

Cornhusker Economics

More than 200 attendees joined the virtual 2021 Nebraska Women in Agriculture Conference from the comfort of their own homes, February 19-20. While this conference looked different compared to years past, it still captured the goals of building relation-ships while gaining valuable knowledge.

The two-day event offered both a live stream and an on-demand learning opportunity for the attendees. Two keynote speakers, four live workshops, and more than 10 on-demand workshops gave attendees a variety of topics and knowledge to take back to their operations.

Pando: Charismatic Megaflora And The Populus Paradox, Paul C. Rogers, Lance Oditt

Aspen Bibliography

Within the field of landscape ecology, the Pando aspen grove on the Fishlake National Forest of Utah is legendary—and it is in danger of dying from hotter, drier temperatures and other threats. Pando is one of the largest and oldest known still-living organisms on Earth. Quaking aspen are an important tree species in Greater Yellowstone and the Rocky Mountain West. Enjoy this essay written by a scientist who studies Pando and a photographer who celebrates this arboreal mega-being.

Application Of Drone And Worldview-4 Satellite Data In Mapping And Monitoring Grazing Land Cover And Pasture Quality: Pre- And Post-Flooding, Clement E. Akumu, Eze O. Amadi, Samuel Dennis

Agricultural and Environmental Sciences Faculty Research

Frequent flooding worldwide, especially in grazing environments, requires mapping and monitoring grazing land cover and pasture quality to support land management. Although drones, satellite, and machine learning technologies can be used to map land cover and pasture quality, there have been limited applications in grazing land environments, especially monitoring land cover change and pasture quality pre- and post-flood events. The use of high spatial resolution drone and satellite data such as WorldView-4 can provide effective mapping and monitoring in grazing land environments. The aim of this study was to utilize high spatial resolution drone and WorldView-4 satellite data to map …

The Annual Rhythmic Differentiation Of Populus Davidiana Growth–Climate Response Under A Warming Climate In The Greater Hinggan Mountains, Ruixin Yun, Yuting Jin, Junxia Li, Zhenju Chen, Zhaoyang Lyu, Ying Zhao, Di Cui

Aspen Bibliography

The stability and balance of forest ecosystems have been seriously affected by climate change. Herein, we use dendrochronological methods to investigate the radial growth and climate response of pioneer tree species in the southern margin of cold temperate coniferous forest based on Populus davidiana growing on the Greater Hinggan Mountains in northeastern China. Correlations of P. davidiana growth with temperature and precipitation in a year (October–September) were rhythmically opposed: while temperatures in previous October–June (winter and spring) and in May–September (growing season) respectively inhibited and promoted radial growth on P. davidiana (p < 0.01), precipitation in the same periods respectively promoted and inhibited of growth (p < 0.01). High temperature or less rain/snow in winter and early spring, and low temperature or excess rainfall in summer, are inconducive to P. davidiana growth and vice versa …

Goatsrue (Galega Officinalis) Identification And Management In Pastures And Croplands, Jacob Hadfield, Corey Ransom, Cody Zesiger, Clark Israelsen

All Current Publications

Goatsrue is an aggressive invasive plant and a declared Utah state noxious weed (Category 1B). It was introduced into the Cache Valley in 1891 and spread through the irrigation canals, streams, and rivers of the Bear River drainage. Cache County has one of the largest goatsrue infestations in the nation. Luckily, only small infestations are found in neighboring counties (Box Elder, Rich, Weber, and Davis). Goatsrue’s rapid growth, prolific seed production, and ability to spread quickly through waterways make it a problem and concern for many residents of Cache County. Properly identifying and managing goatsrue can help reduce the size …

Mental Model-Based Repeated Multifaceted (Mrm) Intervention Design: A Conceptual Framework For Improving Preventive Health Behaviors And Outcomes, Mazbahul G. Ahamad, Fahian Tanin

Department of Agronomy and Horticulture: Faculty Publications

Objective: Field interventions employed to improve preventive health behaviors and outcomes generally use well established approaches; however, recent studies have reported that health education and promotional interventions have little to no impact on health behaviors, especially in low- and middle-income countries. We aimed to develop a conceptual framework to improve intervention designs that would internalize these concerns and limitations.

Results: We identified three major experimental design- and implementation-related concerns associated with mental models, including the balance between the treatment and control groups, the treatment group’s willingness to adopt suggested behaviors, and the type, length, frequency, intensity, and sequence of treatments. …

The Impact Of China’S Environmental And Trade Policies On U.S. Plastic And Paper Waste Exports, Savant Nzayiramya, John C. Beghin

Cornhusker Economics

This article documents major environmental and trade policy changes in China and their impact on plastic and paper waste trade between the U.S. and China and other trade partners. The article explains how U.S. plastic waste exports have been nearly annihilated by these policies. Paper waste trade is more resilient and has survived the policy shifts in China, although quite diminished.

Pie/Decorative Pumpkin Cultivar Evaluation, Chris Smigell, John Strang, John Snyder, Emily Pfeufer, Bob Perry, Emily Dewitt

Midwest Vegetable Trial Reports

Fourteen pie and decorative pumpkin cultivars were evaluated in a replicated trial to determine their performance under Central Kentucky growing conditions. Plants were grown using standard commercial growing practices, using raised beds with trickle tube irrigation and fertigation, and covered with black plastic film. Fungicides and insecticides were applied following University of Kentucky Extension guidelines. Yields per-acre, fruit dimensions, weights and sugar contents were measured. Cultivars were also evaluated for visual attributes, such as size- and color uniformity and stem attractivness. Bisbee Gold’, ‘Baby Wrinkles’, ‘Darling’, ‘Fall Splendor Plus’, ‘Jack Sprat’, ‘Little Giant’ and ‘Cinnamon Girl’ were the best overall …

Grass Bud Responses To Fire In A Semiarid Savanna System, Quinn A. Hiers, Morgan L. Treadwell, Matthew B. Dickinson, Kathleen L. Kavanagh, Alexandra G. Lodge, Heath D. Starns, Doug R. Tolleson, Dirac Twidwell, Carissa L. Wonkka, William E. Rogers

Department of Agronomy and Horticulture: Faculty Publications

Increasingly, land managers have attempted to use extreme prescribed fire as a method to address woody plant encroachment in savanna ecosystems. The effect that these fires have on herbaceous vegetation is poorly understood. We experimentally examined immediate (<24 hr) bud response of two dominant graminoids, a C₃ caespitose grass, Nassella leucotricha, and a C₄ stoloniferous grass, Hilaria belangeri, following fires of varying energy (J/m² ) in a semiarid savanna in the Edwards Plateau ecoregion of Texas. Treatments included high- and low-energy fires determined by contrasting fuel loading and a no burn (control) treatment. Belowground axillary buds were counted and their activities classified to determine immediate effects …

Impact Of Wastewater And Canal Water Irrigation On The Accumulation Of Copper In Maize And Millet Of Different Districts Of Punjab Pakistan, Ifra Saleem Malik, Zafar Iqbal Khan, Kafeel Ahmad, Humayun Bashir, Asma Ashfaq, Mudasra Munir, Sobia Fiaz

Journal of Bioresource Management

In current work, we examined the absorption of metal Copper in generally grown food crops (Maize & Millet), cultivated in the waste water irrigated different Districts of Punjab, Pakistan. Analyzed samples of Water, Soil, shoot and grain were processed through atomic absorption spectrometric method. Our findings of Copper in water and Shoot were highest for Millet of Sargodha, irrigated with wastewater (1.69 mg/kg and 1.43 mg/kg respectively). In soil and grain samples maximum absorption of Cu was obtained in the waste water irrigated Maize (Sargodha) and Millet (Sheikhupura). Overall, Cu level was within the acceptable parameters set by FAO/WHO (2001). …

Distribution Pattern And Phytosociological Study Of Trees Associated With Agroforestry In Poonch District Of Jammu And Kashmir, India, Javed Manzoor, Mohd Junaid Jazib

Journal of Bioresource Management

The focus of present study was to find the phytosociology, distribution pattern, and diversity of different species of trees associated with traditional agroforestry in the district of Poonch, Jammu and Kashmir, India. Data was collected through quadrat survey method. A total of fifty quadrats of the size (10x10m) each were thrown randomly in agriculture fields. Total 26 tree species belonging to 16 families and 21 genera were encountered in the agricultural fields with Grewia optiva, Pyrus persica and Celtis australis being the tree species in dominance. The most dense species of tree recorded was Grewia optiva with a density value …

The Efficacy Of Amino Acids On Regeneration And Analysis Of Genetic Fidelity Of Regenerated Chrysanthemum Morifolium Cv. Zembla, Sharifah Aina Afzan Syed Aminud-Din

Student Works (2020-2029)

Tissue culture technique has been widely applied for the propagation of Chrysanthemum morifolium, a high value ornamental plant. However, somaclonal variation is the biggest challenge for tissue culture industry due to generation of “off-types” plants. This study aims to investigate the effects of supplements in order to improve callus and shoot induction media composition and evaluate the clonal fidelity in regenerated plantlets using retrotransposon-based markers. Leaves and nodal explant materials of Chrysanthemum morifolium “Zembla” were used for callus induction on Murashige and Skoog (MS) media containing 30 g L-1 sucrose, 2 g L-1 gelrite, 3 mg L-1 benzylaminopurine (BAP), 1 …

Diagnostic Walkabouts: Seventeen Years Of Specialized Training For Horticultural Professionals, Timothy J. Malinich, Jacqueline Kowalski, Charles Behnke

Journal of Extension

A diagnostic walkabout (DW) is an in-field diagnostic training program for professionals in the green industry (greenhouse, landscape, nursery, and turf businesses). DWs have been scheduled annually since 2002 and are easily replicable, fee-based programs that provide cost recovery. DWs also serve as a mentoring program for new Extension educators. Four generations of Extension Educators have participated. Recently, the annual program has been sponsored by state and regional trade associations. What began as an educational outreach program has become a bridge spanning Extension, trade associations, businesses, and generations of Extension educators.