Leveraging Agroecology For Solutions In Food, Energy, And Water,
2017
Union for Concerned Scientists
Leveraging Agroecology For Solutions In Food, Energy, And Water, Marcia Delonge, Andrea D. Basche
Department of Agronomy and Horticulture: Faculty Publications
Global agriculture is facing growing challenges at the nexus of interconnected food, energy and water systems, including but not limited to persistent food insecurity and diet-related diseases; growing demands for energy and consequences for climate change; and declining water resources, water pollution, floods and droughts. Further, soil degradation and biodiversity loss are both triggers for and consequences of these problems. In this commentary, we argue that expanding agroecological principles, tools, and technologies and enhancing biological diversity can address these challenges and achieve better socioeconomic outcomes. Agroecology is often described as multi- or transdiscplinary, and applies ecological principles to the design …
Improving Water Resilience With More Perennially Based
Agriculture,
2017
University of Nebraska-Lincoln
Improving Water Resilience With More Perennially Based Agriculture, Andrea D. Basche, Oliver F. Edelson
Department of Agronomy and Horticulture: Faculty Publications
Land conversion from natural to managed ecosystems, while necessary for food production, continues to occur at high rates with significant water impacts. Further, increased rainfall variability exposes agricultural systems to impacts from flood and drought events. In many regions, water limitations are overcome through technological approaches such as irrigation and tile drainage, which may not be sustainable in the long term. A more sustainable approach to combat episodes of floods and droughts is to increase soil water storage and the overall green water efficiency of agroecosystems. Agricultural practices that promote “continuous living cover,” such as perennial grasses, agroforestry and cover …
Using An Active-Optical Sensor To Develop
An Optimal Ndvi Dynamic Model For High-Yield
Rice Production (Yangtze, China),
2017
Nanjing Agricultural University
Using An Active-Optical Sensor To Develop An Optimal Ndvi Dynamic Model For High-Yield Rice Production (Yangtze, China), Xiaojun Liu, Richard B. Ferguson, Hengbiao Zheng, Qiang Cao, Yongchao Tian, Weixing Cao, Yan Zhu
Department of Agronomy and Horticulture: Faculty Publications
The successful development of an optimal canopy vegetation index dynamic model for obtaining higher yield can offer a technical approach for real-time and nondestructive diagnosis of rice (Oryza sativa L) growth and nitrogen (N) nutrition status. In this study, multiple rice cultivars and N treatments of experimental plots were carried out to obtain: normalized difference vegetation index (NDVI), leaf area index (LAI), above-ground dry matter (DM), and grain yield (GY) data. The quantitative relationships between NDVI and these growth indices (e.g., LAI, DM and GY) were analyzed, showing positive correlations. Using the normalized modeling method, an appropriate NDVI simulation model …
Genomic Prediction With Pedigree And Genotype X Environment Interaction In Spring Wheat Grown In South And West Asia, North Africa, And Mexico, Sivakumar Sukumaran, José Crossa, Diego Jarquin, Marta Lopes, Matthew P. Reynolds
Department of Agronomy and Horticulture: Faculty Publications
Developing genomic selection (GS) models is an important step in applying GS to accelerate the rate of genetic gain in grain yield in plant breeding. In this study, seven genomic prediction models under two cross-validation (CV) scenarios were tested on 287 advanced elite spring wheat lines phenotyped for grain yield (GY), thousand-grain weight (GW), grain number (GN), and thermal time for flowering (TTF) in 18 international environments (year-location combinations) in major wheat-producing countries in 2010 and 2011. Prediction models with genomic and pedigree information included main effects and interaction with environments. Two random CV schemes were applied to predict a …
Validation Of Qtl Mapping And
Transcriptome Profiling For Identification Of
Candidate Genes Associated With Nitrogen
Stress Tolerance In Sorghum,
2017
University of Nebraska-Lincoln
Validation Of Qtl Mapping And Transcriptome Profiling For Identification Of Candidate Genes Associated With Nitrogen Stress Tolerance In Sorghum, Malleswari Gelli, Anji Reddy Konda, Kan Liu, Chi Zhang, Thomas E. Clemente, David R. Holding, Ismail M. Dweikat
Department of Agronomy and Horticulture: Faculty Publications
Background: Quantitative trait loci (QTLs) detected in one mapping population may not be detected in other mapping populations at all the time. Therefore, before being used for marker assisted breeding, QTLs need to be validated in different environments and/or genetic backgrounds to rule out statistical anomalies. In this regard, we mapped the QTLs controlling various agronomic traits in a recombinant inbred line (RIL) population in response to Nitrogen (N) stress and validated these with the reported QTLs in our earlier study to find the stable and consistent QTLs across populations. Also, with Illumina RNA-sequencing we checked the differential expression of …
Three Essays On Consumption Behavior, Credit, And Labor Supply Of Farm Households In Sub-Saharan Africa: Evidence From Uganda,
2017
Louisiana State University and Agricultural and Mechanical College
Three Essays On Consumption Behavior, Credit, And Labor Supply Of Farm Households In Sub-Saharan Africa: Evidence From Uganda, Seydina Ousmane Sene
LSU Doctoral Dissertations
Consumption patterns, credit, and labor supply are determinants of human welfare, and also indicators of a country's economic progress, poverty, and inequalities. In this study, I review many of the stylized facts regarding consumption behaviors, credit, and the decision to engage in off-farm labor supply. I also put the life cycle model into an empirical model and perform testing. This is done in a three-essay format with a focus on the country of Uganda. In the first essay, I test whether farm households’ consumption behavior is consistent with an optimization process predicted by economic theory. In essay II, I evaluate …
Simulating Foodborne Pathogens In Poultry Production And Processing To Defend Against Intentional Contamination,
2017
University of Arkansas, Fayetteville
Simulating Foodborne Pathogens In Poultry Production And Processing To Defend Against Intentional Contamination, S. Lankford, D. R. Thompson, S. C. Ricke
Journal of the Arkansas Academy of Science
There is a lack of data in recent history of food terrorism attacks, and as such, it is difficult to predict its impact. The food supply industry is one of the most vulnerable industries for terrorist threats while the poultry industry is one of the largest food industries in the United States. A small food terrorism attack against a single poultry processing center has the potential to affect a much larger human population than its immediate consumers. In this work, the spread of foodborne pathogens is simulated in a poultry production and processing system to defend against intentional contamination. An …
Policy And Institutional Challenges In Climate Information Services Provisioning In Philippine Agriculture,
2017
College of Public Affairs and Development, University of the Philippines Los Baños (UPLB), Laguna, Philippines
Policy And Institutional Challenges In Climate Information Services Provisioning In Philippine Agriculture, Dulce D. Elazegui, Agnes C. Rola, Roger A. Luyun, Nico Jayson C. Anastacio, Francis John F. Faderogao, Maria Cristina A. Alvarez
Journal of Public Affairs and Development
Current and immediate information about the increasingly unpredictable weather conditions are needed to augment conventional knowledge in local communities. Policy analysis on climate information services (CIS) provisioning in the agriculture sector is vital and warranted. This paper describes the global and national CIS policies as well as the institutions involved in provisioning through the characterization of pathways from data generation to dissemination. Further, it identifies the various intermediary users of the CIS and how CIS are ultimately disseminated to the municipal agricultural offices and the farmers. Secondary data sources were searched. Primary data were gathered through key informant interviews. Qualitative …
Tqm/Iso 9001 Implementation In Northern And Central Luzon State Universities,
2017
Extension Programs in Pampanga and Olongapo, University of the Philippines Diliman, Philippines
Tqm/Iso 9001 Implementation In Northern And Central Luzon State Universities, Patrick C. De Leon
Journal of Public Affairs and Development
This case study was conducted to investigate why and how the TQM/ISO 9001 programs were adopted in state universities in the Philippines such as Pangasinan State University, Nueva Ecija University of Science and Technology, and Central Luzon State University; what TQM and ISO 9001 meant to them; and what factors affected TQM/ISO 9001 implementation in their universities. The study found that TQM/ ISO 9001 programs were intended to streamline work processes and improve the quality of services. Implementation involved the hiring of a consultant, conducting trainings, preparing and using a QMS manual, organizing internal and external audits, and receiving ISO …
Food Waste Reduction Strategies In Supermarkets: The Lived Experiences Of Perishable Food Managers In Michigan,
2017
Walden University
Food Waste Reduction Strategies In Supermarkets: The Lived Experiences Of Perishable Food Managers In Michigan, Kelly K. Zimmermann
Walden Dissertations and Doctoral Studies
At the retail level, 25% of sellable food is wasted, and perishable foods account for 72% of food waste in the United States. The purpose of this qualitative phenomenological study was to explore the food waste reduction strategies used by supermarket perishable food department managers, which are covered under the Good Samaritan Food Donation Acts (state and federal). The participant population was comprised of 17 managers who are responsible for perishable foods departments (bakery, deli, meat, dairy, and produce) at local, regional, and national supermarkets in Midland, Michigan. Goal systems theory served as the conceptual framework lens for which the …
Pollen-Mediated Gene Flow From Glyphosate-Resistant Common
Waterhemp (Amaranthus Rudis Sauer): Consequences For The Dispersal Of Resistance Genes,
2017
University of Nebraska-Lincoln
Pollen-Mediated Gene Flow From Glyphosate-Resistant Common Waterhemp (Amaranthus Rudis Sauer): Consequences For The Dispersal Of Resistance Genes, Debalin Sarangi, Andrew J. Tyre, Eric L. Patterson, Todd A. Gaines, Suat Irmak, Stevan Z. Knezevic, John L. Lindquist, Amit J. Jhala
Department of Agronomy and Horticulture: Faculty Publications
Gene flow is an important component in evolutionary biology; however, the role of gene flow in dispersal of herbicide-resistant alleles among weed populations is poorly understood. Field experiments were conducted at the University of Nebraska-Lincoln to quantify pollen-mediated gene flow (PMGF) from glyphosate-resistant (GR) to -susceptible (GS) common waterhemp using a concentric donorreceptor design. More than 130,000 common waterhemp plants were screened and 26,199 plants were confirmed resistant to glyphosate. Frequency of gene flow from all distances, directions, and years was estimated with a double exponential decay model using Generalized Nonlinear Model (package gnm) in R. PMGF declined by 50% …
Estimating Yield Gaps At The Cropping System Level,
2017
University of Nebraska-Lincoln
Estimating Yield Gaps At The Cropping System Level, Nicolas Guilpart, Patricio Grassini, Victor O. Sadras, Jagadish Timsina, Kenneth Cassman
Department of Agronomy and Horticulture: Faculty Publications
Yield gap analyses of individual crops have been used to estimate opportunities for increasing crop production at local to global scales, thus providing information crucial to food security. However, increases in crop production can also be achieved by improving cropping system yield through modification of spatial and temporal arrangement of individual crops. In this paper we define the cropping system yield potential as the output from the combination of crops that gives the highest energy yield per unit of land and time, and the cropping system yield gap as the difference between actual energy yield of an existing cropping system …
Modeling Pollen-Mediated Gene Flow From Glyphosate-Resistant
To -Susceptible Giant Ragweed (Ambrosia Trifida L.) Under Field Conditions,
2017
University of Nebraska-Lincoln
Modeling Pollen-Mediated Gene Flow From Glyphosate-Resistant To -Susceptible Giant Ragweed (Ambrosia Trifida L.) Under Field Conditions, Zahoor A. Ganie, Amit J. Jhala
Department of Agronomy and Horticulture: Faculty Publications
A field experiment was conducted to quantify pollen mediated gene flow (PMGF) from glyphosateresistant (GR) to glyphosate-susceptible (GS) giant ragweed under simulated field conditions using glyphosate resistance as a selective marker. Field experiments were conducted in a concentric design with the GR giant ragweed pollen source planted in the center and GS giant ragweed pollen receptors surrounding the center in eight directional blocks at specified distances (between 0.1 and 35 m in cardinal and ordinal directions; and additional 50 m for ordinal directions). Seeds of GS giant ragweed were harvested from the pollen receptor blocks and a total of 100,938 …
Gene Silencing Of Argonaute5 Negatively Affects The
Establishment Of The Legume-Rhizobia Symbiosis,
2017
Universidad Nacional Autonoma de Mexico
Gene Silencing Of Argonaute5 Negatively Affects The Establishment Of The Legume-Rhizobia Symbiosis, Maria Del Rocio Reyero-Saavedra, Zhenzhen Qiao, Maria Del Socorro Sanchez-Correa, M. Enrique Diaz-Pineda, Jose L. Reyes, Alejandra A. Covarrubias, Marc Libault, Oswaldo Valdes-Lopez
Department of Agronomy and Horticulture: Faculty Publications
The establishment of the symbiosis between legumes and nitrogen-fixing rhizobia is finely regulated at the transcriptional, posttranscriptional and posttranslational levels. Argonaute5 (AGO5), a protein involved in RNA silencing, can bind both viral RNAs and microRNAs to control plant-microbe interactions and plant physiology. For instance, AGO5 regulates the systemic resistance of Arabidopsis against Potato Virus X as well as the pigmentation of soybean (Glycine max) seeds. Here, we show that AGO5 is also playing a central role in legume nodulation based on its preferential expression in common bean (Phaseolus vulgaris) and soybean roots and nodules. We also …
Impact Of The Zambian Agricultural Policy On Grain Trade,
2017
Walden University
Impact Of The Zambian Agricultural Policy On Grain Trade, Onesphore Karuho
Walden Dissertations and Doctoral Studies
The agricultural sector in Zambia is supported through the government use of public expenditure programs to spur the production and subsidize the consumption of key grains to stabilize prices. Previous research has documented the effects of public spending on agriculture in terms of food prices and food security. The effects of government spending on the trade of key grains, however, is not well understood. As such, there is a gap in knowledge regarding the impact of agricultural policy on the agricultural trade. The purpose of this study was to determine the impact of Zambian agricultural policy on grain trade. A …
Growing Yeast For Livestock,
2017
University of Nebraska-Lincoln
Growing Yeast For Livestock, Zachary Christman
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Over 500,000 tons of organic materials such as food scraps are disposed of each year in Wisconsin. A large percentage of this material could be composted or turned into useful products. The purpose of this article is to educate farmers and organizations on how to turn food waste into a high value food source for livestock. Yeast can be grown at any time of the year without the large inputs of agricultural chemicals and machinery that is common with other feed production methods. A yeast growing facility can be scalable to any size the producer wants such as a small …
Reproductive Status Of Drosophila Suzukii (Diptera: Drosophilidae) Females Influences Attraction To Fermentation-Based Baits And Ripe Fruits,
2017
University of Nebraska - Lincoln
Reproductive Status Of Drosophila Suzukii (Diptera: Drosophilidae) Females Influences Attraction To Fermentation-Based Baits And Ripe Fruits, Katharine A. Swoboda-Bhattarai, Douglas R. Mcphie, Hannah Burrack
Department of Entomology: Faculty Publications
Drosophila suzukii (Matsumura) is an invasive species that is a devastating pest of soft-skinned fruit crops. Although much effort has been directed toward developing traps and attractants to monitor for D. suzukii, current monitoring tools do not reliably predict fruit infestation. The objective of this study was to determine if D. suzukii females at different developmental stages are differentially attracted to monitoring traps with fermentation-based baits and ripe fruits. Females were collected on the surface of traps, within traps, and on ripe fruits during three experiments at field locations in North Carolina, USA, and were dissected to determine their reproductive …
Muskmelon Variety Trial In Southwest Indiana — 2016,
2017
Purdue University
Muskmelon Variety Trial In Southwest Indiana — 2016, Wenjing Guan, Dennis Nowaskie
Purdue Fruit and Vegetable Research Reports
This is a compilation of 21 research trial reports from four land-grant universities in the Midwestern United States. Crops include cantaloupe, pickling cucumber, pepper, potato, pumpkin, summer squash and zucchini, sweet corn, tomato, and watermelon. Somecrops were evaluated in high tunnels or hoophouses. Most trials evaluated different cultivars or varieties. One report addressed plant spacing for sweet corn and one addressed soil block for production of tomato seedlings. A list of vegetable seed sources and a list of other online sources of vegetable trial reports are also included.
Watermelon Variety Evaluations In Southwest Indiana, 2016,
2017
Purdue University
Watermelon Variety Evaluations In Southwest Indiana, 2016, Wenjing Guan, Dan Egel, Dennis Nowaskie
Purdue Fruit and Vegetable Research Reports
This is a compilation of 21 research trial reports from four land-grant universities in the Midwestern United States. Crops include cantaloupe, pickling cucumber, pepper, potato, pumpkin, summer squash and zucchini, sweet corn, tomato, and watermelon. Somecrops were evaluated in high tunnels or hoophouses. Most trials evaluated different cultivars or varieties. One report addressed plant spacing for sweet corn and one addressed soil block for production of tomato seedlings. A list of vegetable seed sources and a list of other online sources of vegetable trial reports are also included.
Potassium Applications And Yellow Shoulder Disorder Of Tomatoes In High Tunnels,
2017
Purdue University - Main Campus
Potassium Applications And Yellow Shoulder Disorder Of Tomatoes In High Tunnels, Elizabeth Maynard, Israel S. Calsoya, Jill Malecki
Purdue Fruit and Vegetable Research Reports
Tomatoes grown in unheated high tunnels can suffer significant loss in quality due to yellow shoulder disorder, particularly in susceptible varieties. This paper reports on a preliminary trial to determine whether incidence and severity of the disorder could be influenced by applying potassium fertilizers. Plots with higher leaf potassium content tended to have less fruit with severe yellow shoulder disorder, but increasing the amount of potassium fertilizer applied did not significantly reduce the disorder. From this study it isn’t possible to make specific recommendations for reducing yellow shoulder disorder with potassium applications.
