Agriculture Commons^™

Comparison The Impact Of Co2 And Uvb On Moringa Peregrina And Moringa Oleifera Growth Under Open Top Chamber, Omar Mohammed Alshehhi

Theses

Climate change has had a tremendous impact on ecosystems, with an apparent connection between farming methods and environmental change. Climate change has a substantial effect on both abiotic and biotic factors that affect crop plants. The increasing number of abiotic stressors has highlighted the impact of global warming on plant productivity. This study compared and evaluated the abiotic stress resistance of two Moringa species (Moringa oleifera and Moringa peregrina) to UV radiation, increased CO₂ levels, and their combined effects. The evaluation mainly focused on key morphological features, including plant height (cm) and fresh and dry weights, to assess …

Evaluation Of Opportunities For The Cultivation Of Heterotrophic Plant Root Organ Cultures As Food: Optimization Of Culture Conditions And Carbohydrate Sources, Fatima Mohammed Alkaabi

Theses

All agricultural plant production requires investment of water, energy, and land, especially in the Gulf Region, where environmental conditions are not ideally suitable for crop farming. Currently, less than 40% of agricultural plant biomass production constitutes food, which greatly limits the overall feasibility of food production systems worldwide. Crop residues constitute over half of global agricultural biomass, and food waste and biomass from public parks and gardens further add to the vast pool of non-edible plant material. Existing valorization strategies for such material cannot compensate for the enormous amounts of water, energy, land, and human resources invested in their production. …

Assessing The Above- And Belowground Productivity Of Fall-Planted Cover Crop Cultivars In Nebraska's Diverse Ecoregions, Bridget Mckinley

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

Cover crops (CC) provide essential ecosystem services including soil conservation, nutrient cycling, and weed suppression, through the accumulation of aboveground (AGB) and belowground (BGB) biomass. While AGB has been widely studied, BGB contributions, particularly root development and distribution, remain less understood. This study evaluated fall-planted CC across three Nebraska ecoregions, assessing AGB productivity, BGB biomass, and correlations between ground cover, plant height, and AGB.

Thirty treatments, including grasses, legumes, brassicas, and mixtures, were evaluated over two fall growing seasons (2022–2023 and 2023–2024) at three UNL research centers in northeast, west central, and west Nebraska. AGB was highest at west site …

Bio-Based Sprayable Mulch For Weed Control In Row Crop Systems, Camila Chiaranda Rodrigues

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

Improving current crop productivity levels requires transformative advancements in management, engineering, and science. One of the main challenges is the increasing difficulty of weed management due to herbicide-resistant weeds. There is a growing need for alternative weed management methods to reduce pesticide use and improve environmental safety. An emerging technology that is being developed is spray-on films which could help address these challenges. Spray-on films are liquid solutions that after spraying on the soil will dry and form a physical barrier. The overall objective of this research was to evaluate the effectiveness of a chicken feather bio-based sprayable mulch film …

Developing A Sustainable Nature-Based Agricultural Vertical System In Cadmium Polluted Urban Environments, Fatemeh Kazemi, Mansoure Jozay

Research outputs 2022 to 2026

Sustainable urban development faces challenges in efficiently using spaces, reducing pollutants, and greening cities. We examined how cadmium accumulation in soils from polluted irrigation water affects marigold (Calendula officinalis L.) safe and healthy products and how plant growth-promoting rhizobacteria (PGPRs) can remediate cadmium on marigold for multifunctional urban vertical system development. The study was a factorial arrangement with a randomized complete block design. The first factor was cadmium (0, 1, 2 and, 3 mg/kg soil through irrigation with Cadmium-polluted water), and the second factor was PGPR treatments (P.flu, P.putida, T.SP, Mix1 (P.flu + A.lipo), Mix2 (T.SP+ A.choro), Mix 3 (P.flu …

Roaded Catchments In Wa, Department Of Primary Industries And Regional Development, Western Australia

Natural resources factsheets

Roaded catchments are earthwork structures designed to increase the amount of run-off from the catchment above a receiving farm dam.

Roaded catchments are lined with clay and compacted to make a smooth surface that reduces infiltration and increases run-off. Roaded catchments should discharge into a silt trap and then into a dam (excavated earth tank). This combined structure should be fenced to exclude livestock.

The Department of Primary Industries and Regional Development recommends that roaded catchments are part of an integrated water and salinity management program.

The information in this page is only a guide – seek expert advice before …

Excavated Tanks (Farm Dams), Department Of Primary Industries And Regional Development, Western Australia

Natural resources factsheets

Guidelines and information for planning, legal requirements, design, construction and management of excavated tanks for water storage on farm.

Excavated tanks (farm dams) provide effective water storage wherever surface water run-off can be harvested for livestock, crop spraying, irrigation and domestic use on rural properties.

Excavated tanks for rainfall storage are common in the southern agricultural areas of WA.

Well-designed and constructed dams are farm assets, safe and require little maintenance.

Poor design and construction can lead to poor water harvesting and storage, excessive costs, downstream erosion and risks to property and people.

DPIRD recommends that excavated tanks should be …

Greenhouse Gas Accounting For Western Australian Agriculture 2022, Johnny Machon, Mandy Curnow, Christophe D'Abbadie

Climate Science Published Reports

This report presents new modelling of the greenhouse gas emissions attributable to Western Australia’s agricultural industries and provides an overview of sequestration at the state level. The report improves and expands on the estimates from previous technical reports by the Department of Primary Industries and Regional Development (DPIRD), most notably Curnow et al. (2022). The report presents a new, much broader picture, capturing not only emissions from agricultural activities in Western Australia (WA), but also the emissions associated with the production of agricultural inputs and the sequestration that occurs on agriculturally managed lands. This broader picture of emissions aligns with …

A Comparison Of Inversion Test Holding Methods For Broilers, A. Perretti, S. Weimer

Poultry Science Faculty Publications and Presentations

Objective, robust, and repeatable assessments of fear responses of poultry can lead to improvements in research techniques, the validity of test results, and ultimately bird welfare. The objective of this study was to examine the effect of 2 different holding methods on broiler fear responses during the inversion test, a standardized method of assessing fear in poultry. On D15 and D34 mixed-sex broilers (N = 80) were inverted and held either by their shanks (N = 40) or feet (N = 40) at arm's length away from the experimenter for 30 s. The frequency of wing flapping, head movement, attempts …

Evaluation Of Alkaloid Levels In Commercial And Wild Genotypes Of Narrow-Leafed Lupin, Tawfeek Khedr, Ling Ling Gao, Lars G. Kamphuis, Utpal Bose, Angéla Juhász, Michelle L. Colgrave

Research outputs 2022 to 2026

Lupins are a promising source of protein that can complement soybean-based proteins in food and animal feed. Narrow-leafed lupin (Lupinus angustifolius) is the predominant lupin species cultivated in Australia and Europe. Consumption of lupin products can lead to toxicity in both humans and animals, primarily due to the presence of naturally occurring alkaloid compounds. The aim of the present research was to examine the alkaloid content of commercial narrow-leafed lupin grown in Australia and compare this to wild accessions. Nineteen accessions of narrow-leafed lupin were grown in a growth chamber with a day/night cycle of 18 h of light and …

Economic Considerations Of In-Season Potassium Applications To Soybean Using Payoff Matrices, Carrie Ortel, T. L. Roberts, M. Popp, W. J. Ross, N. A. Slaton, M. R. Parvej

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Potassium (K) deficiency is a common yield-limiting factor in Arkansas soybean (Glycine max (L.) Merr.) production that can be addressed with innovative supplemental fertilizer application. An established leaf sampling protocol and dynamic critical concentration allow accurate diagnosis of K deficiency with corresponding recommendations for corrective, in-season K fertilizer applications at site-specific rates and times to reach anticipated yield goals. However, the profitability of in-season K fertilizer applications to irrigated soybean remains unclear. Research was conducted in Arkansas from 2021 to 2023 to evaluate multiple rates of in-season applications of muriate of potash to soybean at 15 and 30 days …

Trucks, Trains, And Barges: For Brazilian Soybeans, It’S Not Your Grandpa’S Infrastructure Anymore, Fabio Mattos

Cornhusker Economics

In the popular movie “Planes, Trains & Automobiles”, the tagline said, “Steve Martin had no reason to panic… until John Candy came along”. In the soybean market, we could say, “We had no reason to panic… until Brazil came along”. Brazil has been rapidly growing its soybean production for the last 30 years and has recently become the largest exporter in the world. In 2024/25, USDA estimates that Brazil will account for 58% of soybean exports worldwide, followed by the United States with 28%. These are roughly the numbers for 2023/24 and 2022/23 as well.

Still, despite the massive growth …

Compost Comparison In High Tunnels, Elizabeth Maynard, Marian Rodriguez-Soto, Rebecca Koetz

Midwest Vegetable Trial Reports

Compost is frequently used in market garden production systems, both in the field and in high tunnels. This trial was conducted in northern Indiana to evaluate four composts for use in high tunnel tomato production, with primary emphasis on their value as sources of macronutrients. The results reported here document effects of the composts on tomato yield, leaf tissue nutrient concentrations, and soil nutrients at the end of one growing season.

Forage Crops Interseeded In Pumpkins, Elizabeth Maynard, Rebecca Koetz, Marian Rodriguez-Soto

Midwest Vegetable Trial Reports

Pumpkins are grown on more than one-third of Indiana vegetable farms. There is increasing interest in producing grassfed livestock for local sales and integrating livestock into annual cropping systems. Cattle are known to eat unharvested pumpkins that remain in the field after harvest, and success in undersowing cover crops in pumpkins has been reported in the literature and by producers. This trial in northern Indiana evaluated the performance of different forage cover crops in a market pumpkin system. Results showed there is potential for interplanting forage crops or winter cover crops between pumpkin rows in July or August. When planted …

Wics Conference 2024: Creating Connections Together: Agenda And Abstracts, Daren D. Redfearn, Christopher A. Proctor

Water and Integrated Cropping Systems Conferences

WICS Conference 2024: Creating Connections Together

Agenda and Abstracts

Water Security (Quantity/Quality)

Nebraska Groundwater Quality Clearinghouse; Augustine Adjei, Martha Rhoades, and Kent Eskridge

Assessing the AquaCrop model’s accuracy for soybean under variable irrigation; Anmol Singh

Yield response of irrigated maize hybrids to water availability; Thais Murias Jardi, Saleh Taghvaeian, Chris Proctor, Daran Rudnick, and Chuck Burr

Using the DSSAT CERES-Maize model to evaluate farmers' irrigation decisions; Rintu Sen

Nutrient Management and Cycling

Effect of cover crop mixtures and crop rotation on nitrogen dynamics and crop yield in southeast Nebraska; Madhusudhan Adhikaari

Nitrogen inhibitors reduce nitrogen losses via ammonia volatilization, nitrous …

Selected Indiana Government Statistical Agencies And Their Data, Bert Chapman

Libraries Faculty and Staff Presentations

Provides coverage of Indiana state government agencies statistics and selected Tippecanoe County, Indiana local government statistical publications. Presentation describes state agencies such as the Indiana Departments of Agriculture, Education, Health, Local Government Finance, and State Budget Agency. Examples of historical and current data are presented.

The Primacy Of Density-Mediated Indirect Effects In A Community Of Wolves, Elk, And Aspen, Elaine M. Brice, Eric J. Larsen, Daniel R. Stahler, Daniel R. Macnulty

Aspen Bibliography

The removal or addition of a predator in an ecosystem can trigger a trophic cascade, whereby the predator indirectly influences plants and/or abiotic processes via direct effects on its herbivore prey. A trophic cascade can operate through a density-mediated indirect effect (DMIE), where the predator reduces herbivore density via predation, and/or through a trait-mediated indirect effect (TMIE), where the predator induces an herbivore trait response that modifies the herbivore's effect on plants. Manipulative experiments suggest that TMIEs are an equivalent or more important driver of trophic cascades than are DMIEs. Whether this applies generally in nature is uncertain because few …

Your Sco/Eco Policy Under The Hood: What County Yield Is The Rma Using?, Cory Walters, Ken Harrison, Connor Whalen

Cornhusker Economics

Over the past decade, crop insurance has continued to expand contract offerings through new area-based policies. Supplemental Coverage Option (SCO) was introduced in the mid-2010s. Enhanced Coverage Option (ECO) was introduced in the early 2020s, and Margin Protection (MP) was introduced in the mid-to-late 2010s. The ECO premium subsidy was recently increased for the 2025 crop year to further encourage producer participation. Both the SCO and ECO programs have experienced increased participation for a variety of reasons.

How To Communicate Your Estate Plan To Family When Dividing Assets Unequally, Anastasia Meyer

Cornhusker Economics

Provides a guide on how to effectively approach estate planning conversations with family members.

Effectively communicating an estate plan with unequal division of assets can be challenging, but approaching it with honesty, clarity, and empathy can help prevent misunderstandings and family disputes. Open, respectful dialogue—paired with thoughtful explanations and transparent documentation—ensures that your family understands your intentions and feels valued, even when tough decisions are involved.

Ultimately, your goal isn’t just to pass down financial assets, but also to preserve family harmony and, where applicable, secure the future of a viable business. By fostering open communication, you can create a …

Twas Facilitates Gene-Scale Trait Genetic Dissection Through Gene Expression, Structural Variations, And Alternative Splicing In Soybean, Delin Li, Qi Wang, Yu Tian, Xiangguang Lyv, Hao Zhang, Huilong Hong, Huawei Gao, Yan-Fei Li, Chaosen Zhao, Jiajun Wang, Ruizhen Wang, Jinliang Yang, Bin Liu, Patrick S. Schnable, James C. Schnable, Ying-Hui Li, Li-Juan Qiu

Department of Agronomy and Horticulture: Faculty Publications

A genome-wide association study (GWAS) identifies trait-associated loci, but identifying the causal genes can be a bottleneck, due in part to slow decay of linkage disequilibrium (LD). A transcriptome-wide association study (TWAS) addresses this issue by identifying gene expression–phenotype associations or integrating gene expression quantitative trait loci with GWAS results. Here, we used self-pollinated soybean (Glycine max [L.] Merr.) as a model to evaluate the application of TWAS to the genetic dissection of traits in plant species with slow LD decay. We generated RNA sequencing data for a soybean diversity panel and identified the genetic expression regulation of 29 …

Development Of A High-Density Genetic Linkage Map And Identification Of Quantitativetrait Loci (Qtls) Associated With Botrytis Cinerea Resistance In Strawberry(Fragaria × Ananassa Duch.), Duygu Ayvaz Sönmez, Harun Karci, Hayat Topçu, Ömer Faruk Bi̇lgi̇n, Hale Günaçti, Habi̇bullah Tevfi̇k, Burak Özgören, Yefim Ronin, Elena Baraldi, Sali̇h Kafkas, Nesi̇be Ebru Kafkas

Turkish Journal of Agriculture and Forestry

Over the centuries, strawberry fruit quality has greatly improved through various selection studies. The discovery of genes andgenomic positions related to traits such as fruit quality and resistance to diseases and pests has been accelerated by new biotechnologicalmethods. The objectives of this study are (i) to construct single nucleotide polymorphism (SNP) Fana array-based high-throughputgenetic linkage groups for the ‘Fortuna × Rubygem’ F1 population, and (ii) to detect quantitative trait loci (QTL) regions associated withBotrytis cinerea resistance in leaf and fruit traits of strawberry. A total of 945 and 984 SNPs were mapped in the ‘Fortuna’ maternal andthe ‘Rubygem’ paternal maps, …

Change In Plant Growth And Some Bioactive Components Of The Tomato Under Water Deficit With Exogenous Chrysin Treatment, Melek Eki̇nci̇, Ertan Yildirim, Selda Örs, Meti̇n Turan, Duran Şi̇mşek, Yüsra İnci̇

Turkish Journal of Agriculture and Forestry

Drought is one of the important factors that cause a decrease in productivity and quality in plant cultivation. Stress tolerance in plants can be increased or damage can be reduced by various exogenous applications. One of them is flavonoids, which have an important role in the response to stress through changes that occur at the endogenous level in the plant due to drought stress. The effects of exogenous treatment of chrysin, a member of the flavonoid group, on tomato seedlings grown under water deficit were examined. Different doses (C0: Control with no treatment, C1: 0.1 mM, C2: 0.5 mM and …

Quality Characteristics Of The Cv. Albion Strawberry (Fragaria X Ananassa Duch.)In Different Locations, Burhanetti̇n İmrak, Ayşegül Esra Gölcü, Songül Çömlekçi̇oglu, Mehmet Ramazan Bozhüyük, Jiri Mlcek, Gürsel Özkan, Sona Skrovankova

Turkish Journal of Agriculture and Forestry

Strawberries are one of the most popular berries in the world due to their distinctive aroma, flavor, and known healthproperties. A top day-neutral strawberry variety, the Albion, with its potential for high yields of large fruit, was grown in two differentlocations (Dağdibi and Hamidiye) at different altitudes (1410 and 1293 m) in Pozantı, a district of the Adana province in Türkiye, for lateseason production. Ripe fruits were harvested during the commercial harvest period, and several important physical and biochemicalparameters were examined. In addition, the fruit’s (berry’s) external and flesh color, fruit length and width, soluble solid content (SSC),antioxidant capacity, total …

Shell Translucency: A Novel Eggshell Quality Parameter In Broiler Breeders, Duarte Neves, Austin Jasek, Colwayne Morris, Raquel Burin, Kevin Stephens, Marco Rebollo

Proceedings of the Arkansas Nutrition Conference

In the United States, nearly 240 million commercial broiler breeder eggs are incubated weekly with an average hatchability of 79.1% (Third Party Reporting). Between 160 eggs/hen and 125 chicks/hen the loss is considerable. In 2007, an estimated 1% improvement in hatchability would escalate profits by over $25 million to hatcheries and markedly increase profitability in broiler operations (Schaal and Gherian, 2007). In order to tap into top hatchability performances, egg management in commercial hatcheries such as egg storage time and conditions, incubation temperature and humidity, as well as turning frequency are of utmost importance (Vick et al., 1993; Reis et …

The Economics Of The ‘Buy Local’ Trend, Susweta Ray, Konstantinos Giannakas

Cornhusker Economics

The results of our study underline the significance of the explicit consideration of consumer and producer heterogeneity and the size and type of the locality when analyzing the market and welfare impacts of the ‘Buy Local’ trend. In addition to providing important new insights on the market and welfare impacts of the ‘Buy Local’ trend, our analysis can also provide a valuable theoretical grounding for empirical studies aimed at quantifying the economic impacts of the trend in different food product markets as well as the impact of current and emerging policies affecting the markets for local foods.

Genetic Diversity Of Soybean Dwarf Virus In Two Regions Of Mainland Australia, Benjamin S. Congdon, Murray Sharman, Monica Kehoe

Biosecurity Research Articles

Soybean dwarf virus (SbDV; family Tombusviridae, genus Luteovirus, species Luteovirus glycinis) is an RNA plant virus that is transmitted solely by aphids in a persistent, circulative and non-propagative manner. SbDV causes significant losses in cultivated Fabaceae, especially in subterranean clover (Trifolium subterraneum) pastures of mainland Australia. SbDV isolates are classified into four phenotypically distinguishable strains: YP, YS, DP, and DS. Y and D strains differ primarily in their host range, and P and S strains in their primary vector species. Genetically, Y and D strains separate into two clades in every genomic region except for …

Why Tariffs Are A Tax On American Consumers, Timothy Meyer

Cornhusker Economics

Summary

The takeaway from this article should be that tariffs are a political tool, not an economic one. They do raise prices and revenue, but not as much as advertised (by either side).

At its core, Economics is the study of how scarcity is solved. That is, how limited resources are best utilized. Time and time again, Adam Smith’s idea that the invisible hand of markets would guide us to welfare-maximizing solutions, largely through specialization and trade. It’s why most of us specialize in one career and trade our hard-earned money for goods and services instead of producing them at …

Efficient Real-Time Droplet Tracking In Crop-Spraying Systems, Troung Nhut Huynh, Travis Burgers, Kim-Doang Nguyen

Mechanical Engineering Faculty Publications

Spray systems in agriculture serve essential roles in the precision application of pesticides, fertilizers, and water, contributing to effective pest control, nutrient management, and irrigation. These systems enhance efficiency, reduce labor, and promote environmentally friendly practices by minimizing chemical waste and runoff. The efficacy of a spray is largely determined by the characteristics of its droplets, including their size and velocity. These parameters are not only pivotal in assessing spray retention, i.e., how much of the spray adheres to crops versus becoming environmental runoff, but also in understanding spray drift dynamics. This study introduces a real-time deep learning-based approach for …

2025 Western Australian Crop Sowing Guide, Stacey Power, Brenda Shackley, Blakely Paynter, Mark Seymour, Harmohinder Dhammu, Bronte Wackett

Bulletins 4000 -

The 2025 Western Australian Crop Sowing Guide has been compiled by officers of the Department of Primary Industries and Regional Development. It provides information to support variety decisions for each of the major crops for the upcoming season.

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