Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Social sciences (33)
- Yield (26)
- Vegetables (25)
- Variety trials (24)
- Biological sciences (22)
-
- Quality (19)
- Zea mays (19)
- Agriculture (18)
- Sweet corn (17)
- Sweetcorn (15)
- Michigan (13)
- Trial (13)
- High tunnel (12)
- Applied sciences (11)
- Seedless (9)
- Tomato (9)
- Variety (9)
- Variety trial (9)
- Capsicum annum (8)
- Solanum lycopersicum (8)
- Varieties (8)
- Cucumber (6)
- Earth sciences (6)
- Health and environmental sciences (6)
- Pumpkin (6)
- Animal Culture and Nutrition (5)
- Bell pepper (5)
- Cucurbita pepo (5)
- Education (5)
- Food security (5)
- Publication Year
- Publication
-
- Midwest Vegetable Trial Reports (192)
- Open Access Theses (79)
- Open Access Dissertations (46)
- Purdue Fruit and Vegetable Research Reports (31)
- Journal of Applied Farm Economics (11)
-
- The Summer Undergraduate Research Fellowship (SURF) Symposium (8)
- Faculty Publications (5)
- Graduate Industrial Research Symposium (5)
- The Journal of Purdue Undergraduate Research (5)
- Libraries Faculty and Staff Scholarship and Research (4)
- Purdue Policy Research Institute (PPRI) Policy Briefs (4)
- Uniform Soybean Tests Northern Region (4)
- Engagement & Service-Learning Summit (3)
- Ideas: Exhibit Catalog for the Honors College Visiting Scholars Series (3)
- Indiana STEM Education Conference (3)
- Purdue Journal of Service-Learning and International Engagement (3)
- Purdue University Press Book Previews (3)
- Department of Agricultural Economics Faculty Publications (2)
- Department of Horticulture & Landscape Architecture Faculty Publications (2)
- Libraries Faculty and Staff Presentations (2)
- Purdue GIS Day (2)
- Purdue P-12 Networking Summit & Poster Session (2)
- Student Papers in Public Policy (2)
- Changing World Conference (1)
- Data Information Literacy Case Study Directory (1)
- Department of Computer Graphics Technology Degree Theses (1)
- Department of Earth, Atmospheric, and Planetary Sciences Faculty Publications (1)
- I-GUIDE Forum (1)
- LARS Symposia (1)
- Purdue Methods for Arabidopsis Growth (1)
- Publication Type
- File Type
Articles 421 - 432 of 432
Full-Text Articles in Entire DC Network
Swat Model Simulation Of Bioenergy Crop Impacts In A Tile-Drained Watershed, Chelsie Marie Werling Boles
Swat Model Simulation Of Bioenergy Crop Impacts In A Tile-Drained Watershed, Chelsie Marie Werling Boles
Open Access Theses
Tile drains are an important component of agricultural production in the Midwest, and their inclusion in modeling studies is important in watersheds where they are a principal hydrologic pathway. The new tile drainage simulation method in the Soil Water Assessment Tool (SWAT) was parameterized and tile flow results were compared with reviewed literature. Streamflow, sediment, and nutrient outputs were compared to measured values and simulated crop yields were examined with respect to average county yields. Plant growth stressors were examined to account for differences between simulated and published yields. The bioenergy crop switchgrass (Panicum virgatum) was applied over …
How Population Density Influences Agricultural Intensification And Productivity: Evidence From Ethiopia, Anna Leigh Josephson
How Population Density Influences Agricultural Intensification And Productivity: Evidence From Ethiopia, Anna Leigh Josephson
Open Access Theses
We use household-level panel data to estimate how population density impacts agricultural intensification and farm income in Ethiopia. We hypothesize that increases in population density affect agricultural intensification and farm income directly through information flows, institutional development, and reduction in transactions costs. Increases in population density also affect agricultural intensification and farm income indirectly through farm size, agricultural wage rates, and staple crop prices. We find that increases in population density lead to lower farm sizes, which has major implications for agricultural intensification and household well-being. Our analysis indicates that increases in population density cause farmers to purchase more inorganic …
Effects Of Housing And Calcium-Deficient Diet On Health And Egg Production In Bovans Brown Hens., Jiaying Hu
Effects Of Housing And Calcium-Deficient Diet On Health And Egg Production In Bovans Brown Hens., Jiaying Hu
Open Access Theses
Public concern about the welfare of hens kept in conventional cages has become an important issue worldwide. The conventional cage system has been banned by the European Union since 2012. Several housing systems, including free range, have been developed as welfare friendly alternatives to the conventional cage system. Experiment 1, the study examined the effects of housing environment, conventional cages vs. floor pens, on hens' health and egg production. A total of 84 19-wk-old Bovans Brown hens were randomly assigned into 2-bird cage with 12 replications (n=12), providing 968 cm2 floor space per hen or 10-bird floor pen with 6 …
A Land Data Assimilation System (Ldas) Based Dataset For Regional Agro-Climatic Assessments, Xing Liu
A Land Data Assimilation System (Ldas) Based Dataset For Regional Agro-Climatic Assessments, Xing Liu
Open Access Theses
This study is part of a USDA sponsored project ----Useful to Usable (U2U): "Transforming Climate Variability and Change Information for Cereal Crop Producers". The broader objective includes improving farm resilience and profitability in the U.S. Corn Belt region by transforming existing climate/weather data into usable knowledge and tools for the agricultural community.
The specific tasks of this research are: (1) Build a high-resolution (4 km, daily) agro-climatic dataset using a Land Data Assimilation System (LDAS). (2) Estimate regional corn yield across the Corn Belt with crop models and the agro-climatic dataset. (3) Evaluate the impacts of climate variability due to …
Biology And Ecology Of Glyphosate-Resistant Giant Ragweed, Kabelo Segobye
Biology And Ecology Of Glyphosate-Resistant Giant Ragweed, Kabelo Segobye
Open Access Theses
Giant ragweed (Ambrosia trifida L.) is a competitive annual plant found in disturbed landscapes and is the most troublesome weed in Indiana and the US Corn Belt. It is one of the most common and problematic weeds in corn and soybean production. The introduction of herbicide glyphosate, N-(phosphonomethyl) glycine in early 1970's provided farmers with a better and low-cost tool to control weeds. The use of glyphosate drastically increased after the development of glyphosate resistant agronomic crops in 1996 and was use as a post-emergence selective herbicide. This led to overreliance and repeated use of glyphosate for weed control especially …
Impacts Of Insecticide Treatments On Platytetranychus Multidigituli (Acari:Tetranychidae) And Predatory Mites On Gleditsia Triacanthos Var. Inermis (Honeylocust), Adam Robert Witte
Impacts Of Insecticide Treatments On Platytetranychus Multidigituli (Acari:Tetranychidae) And Predatory Mites On Gleditsia Triacanthos Var. Inermis (Honeylocust), Adam Robert Witte
Open Access Theses
Spider mite outbreaks can occur in urban forests after insecticides are applied to control early season pests. We used thornless honeylocust (Gleditsia triacanthos var. inermis) and honeylocust spider mite (Platytetranychus multidigituli) as a model to investigate this phenomenon by applying both topical and systemic insecticides to treat early season pests of honeylocust. Impacts of these applications on populations of P. multidigituli and its associated predatory mites were assessed. Early season applications of bifenthrin caused outbreaks of honeylocust spider mite and drastically reduced phytoseiids but not the stigmaeid mite, Zetzellia mali. In contrast later season applications suppressed populations of P. multidigituli. …
A Spatially Explicit Watershed Scale Optimization Of Cellulosic Biofuels Production, Jingyu Song
A Spatially Explicit Watershed Scale Optimization Of Cellulosic Biofuels Production, Jingyu Song
Open Access Theses
Producing biofuels from energy crops is one such alternative. They can result in relatively lower greenhouse gas emissions compared to traditional energy sources. Up to now, corn grain is the most researched energy crop. Cellulosic perennial crops such as switchgrass, miscanthus and fast growing trees are also promising energy crops and are expected to help with the energy supply. The 2007 Renewable Fuel Standard requires 16 billion gallons of a total of 36 billion gallons of renewable fuels to be cellulosic biofuels by 2022. Many studies are being done to evaluate costs and feasibility of different potential feedstocks and the …
Development Of Markets For Local Food Crop To Enhance Incomes And Improve Food Security For Smallholder Farmers In East Africa, Betty Bugusu
Development Of Markets For Local Food Crop To Enhance Incomes And Improve Food Security For Smallholder Farmers In East Africa, Betty Bugusu
Changing World Conference
No abstract provided.
Do Wind Turbines Affect Weather Conditions?: A Case Study In Indiana, Meghan F. Henschen, Brittany Herrholtz, Lacey Rhudy, Kathryn Demchak, Brian Doogs, Joshua Holland, Erik Larson, Johnny Martin, Matthew Rudkin
Do Wind Turbines Affect Weather Conditions?: A Case Study In Indiana, Meghan F. Henschen, Brittany Herrholtz, Lacey Rhudy, Kathryn Demchak, Brian Doogs, Joshua Holland, Erik Larson, Johnny Martin, Matthew Rudkin
The Journal of Purdue Undergraduate Research
Wind turbines are becoming increasingly widespread in the United States as the world looks for cleaner sources of energy. Scientists, policymakers, and citizens have strong opinions regarding the positive and negative effects of wind energy projects, and there is a great deal of misinformation about wind energy circulating on the Web and other media sources. The purpose of this study is to gain a better understanding of how the rotation of hundreds of turbines can influence local weather conditions within a wind farm and in the surrounding areas. This experiment measures temperature, atmospheric pressure, wind speed, wind direction, relative humidity, …
Comparisons Between Educational Map Software Displaying Soil Data, Laura A. Kocur
Comparisons Between Educational Map Software Displaying Soil Data, Laura A. Kocur
Department of Computer Graphics Technology Degree Theses
The use of technology in the classroom is becoming more widespread, and the area of agronomy is no different. Utilization of various mapping technology is more common in instructional components in the classroom, although the impacts of software usability have not yet been explored. Maps available over the Internet are identified as an area in which usability is not known, nor are there any fixed standards or conventions to govern the display of them. The recently developed mapping prototype is intended to increase accessibility to map data used in class, as well as make it easier to use the data. …
The Queen Of American Agriculture: A Biography Of Virginia Claypool Meredith, Frederick Whitford, Andrew G. Martin, Phyllis Mattheis
The Queen Of American Agriculture: A Biography Of Virginia Claypool Meredith, Frederick Whitford, Andrew G. Martin, Phyllis Mattheis
The Founders Series
Virginia Claypool Meredith's role in directly managing the affairs of a large and prosperous farm in east-central Indiana opened doors that were often closed to women in late nineteenth century America. Her status allowed her to campaign for the education of women, in general, and rural women, in particular. While striving to change society's expectations for women, she also gave voice to the important role of women in the home. A lifetime of dedication made Virginia Meredith "the most remarkable woman in Indiana" and the "Queen of American Agriculture." Meredith was also an integral part of the history of Purdue …
The Tasselled Cap -- A Graphic Description Of The Spectral-Temporal Development Of Agricultural Crops As Seen By Landsat, R. J. Kauth, G. S. Thomas
The Tasselled Cap -- A Graphic Description Of The Spectral-Temporal Development Of Agricultural Crops As Seen By Landsat, R. J. Kauth, G. S. Thomas
LARS Symposia
The time trajectories of agricultural data points as seen in LANDSAT signal space form a pattern suggestive of a tasselled woolly cap. Using this easily visualized three dimensional construct most of the important phenomena of crop development and observation variables are pointed out, named, discussed and measured. The important crop phenomena described are the distribution of signals from bare soil, the processes of green development, of yellow development, of shadowing and of harvesting. The important external variables include view angle, sun angle, atmospheric haze, and atmospheric water vapor.
The development of a quantitative picture of the tasselled cap depends upon …