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High Tunnel Tomato Variety Report Uri 2016, Andy Mark Radin 2016 Universityof Rhode Island

High Tunnel Tomato Variety Report Uri 2016, Andy Mark Radin

Rhode Island Agricultural Experiment Station Bulletin

No abstract provided.


Pumpkin Variety Trial Uri 2016, Rebecca Brown 2016 brownreb@uri.edu

Pumpkin Variety Trial Uri 2016, Rebecca Brown

Rhode Island Agricultural Experiment Station Bulletin

No abstract provided.


Butternut Squash Variety Trial Uri 2016, Rebecca Brown 2016 brownreb@uri.edu

Butternut Squash Variety Trial Uri 2016, Rebecca Brown

Rhode Island Agricultural Experiment Station Bulletin

No abstract provided.


Effects Of Stocking Rate And Corn Gluten Feed Supplementation On Performance Of Young Beef Cows Grazing Winter-Stockpiled Tall Fescue-Red Clover Pasture, R. Driskell, J.R. Russell, Daryl R. Strohbehn, Daniel G. Morrical, Stephen K. Barnhart, John Lawrence 2016 Iowa State University

Effects Of Stocking Rate And Corn Gluten Feed Supplementation On Performance Of Young Beef Cows Grazing Winter-Stockpiled Tall Fescue-Red Clover Pasture, R. Driskell, J.R. Russell, Daryl R. Strohbehn, Daniel G. Morrical, Stephen K. Barnhart, John Lawrence

John Lawrence

A winter grazing experiment was conducted to evaluate the effects of stocking rate and corn gluten feed supplementation on forage mass and composition and the BW and BCS of bred 2-yr-old cows grazing stockpiled forage during winter. Two 12.2-ha blocks containing Fawn, endophyte-free, tall fescue and red clover were each divided into 4 pastures of 2.53 or 3.54 ha. Hay was harvested from the pastures in June and August of 2003 and 2004, and N was applied at 50.5 kg/ha at the initiation of stockpiling in August. On October 22, 2003, and October 20, 2004 ...


Gis Data Sets Available From The Department Of Agriculture And Food Wa, DAFWA Geographic Information Services 2016 Department of Agriculture and Food, Western Australia

Gis Data Sets Available From The Department Of Agriculture And Food Wa, Dafwa Geographic Information Services

Geographic Information Services Data

A list of the data sets that are available from DAFWA's Geographic Information Services (GIS) group with links to access WMS, WFS or data downloads and existing maps where available.


Economic Analysis Of Variable Rate Management For Corn And Soybean Systems, William D. Batchelor, Bruce A. Babcock, Alfred M. Blackmer, Richard M. Cruse, Thomas S. Colvin, Ramesh S. Kanwar, U. Sunday Tim 2016 Iowa State University

Economic Analysis Of Variable Rate Management For Corn And Soybean Systems, William D. Batchelor, Bruce A. Babcock, Alfred M. Blackmer, Richard M. Cruse, Thomas S. Colvin, Ramesh S. Kanwar, U. Sunday Tim

U. Sunday Tim

What is the potential payoff for farmers moving from traditional whole-field management or integrated crop management to precision farming? Using computer models, the investigators sought to analyze how inputs can be applied at optimal rates variably across a field in order to match inputs with crop needs. Over the long term, only modest increases were shown in gross returns from these practices. However, gross returns for individual years can be substantial.


Expression Of Cyanobacterial Fbp/Sbpase In Soybean Prevents Yield Depression Under Future Climate Conditions, Iris H. Kohler, Ursula M. Ruiz-Vera, Andy VanLoocke, Michell L. Thomey, Tom Clemente, Stephen P. Long, Donald R. Ort, Carl J. Bernacchi 2016 United States Department of Agriculture

Expression Of Cyanobacterial Fbp/Sbpase In Soybean Prevents Yield Depression Under Future Climate Conditions, Iris H. Kohler, Ursula M. Ruiz-Vera, Andy Vanloocke, Michell L. Thomey, Tom Clemente, Stephen P. Long, Donald R. Ort, Carl J. Bernacchi

Agronomy Publications

Predictions suggest that current crop production needs to double by 2050 to meet global food and energy demands. Based on theory and experimental studies, overexpression of the photosynthetic enzyme sedoheptulose-1,7-bisphosphatase (SBPase) is expected to enhance C3 crop photosynthesis and yields. Here we test how expression of the cyanobacterial, bifunctional fructose-1,6/sedoheptulose-1,7-bisphosphatase (FBP/SBPase) affects carbon assimilation and seed yield (SY) in a major crop (soybean, Glycine max). For three growing seasons, wild-type (WT) and FBP/SBPase-expressing (FS) plants were grown in the field under ambient (400 μmol mol−1) and elevated (600 μmol mol−1) CO2 concentrations ...


Characterization Of Ground Nozzles For Pesticide Applications, Ryan Henry 2016 University of Nebraska - Lincoln

Characterization Of Ground Nozzles For Pesticide Applications, Ryan Henry

Theses, Dissertations, and Student Research in Agronomy and Horticulture

Pesticide applications are a common component of crop production systems in the United States (US). For row crop systems (e.g. corn, soybean, or wheat), pesticides are applied by ground, aerial, or chemigation methods. The exact method of pesticide delivery is not universally regulated/ prescribed in the US, and the equipment and application technique are largely defined by the individual applicator. A wide variety of choices and decisions must be made by applicators to result in a successful pesticide application. Examples of these choices include proper active ingredient(s), carrier volume and equipment (e.g. nozzle type, spacing, and operating ...


Winter Desiccation Prevention And Recovery In Turfgrass, Darrell James Michael 2016 University of Nebraska-Lincoln

Winter Desiccation Prevention And Recovery In Turfgrass, Darrell James Michael

Theses, Dissertations, and Student Research in Agronomy and Horticulture

Desiccating winters in the Northern Great Plains can lead to widespread turf death. This loss of turf results in poor aesthetics and can be financially burdensome. Financial implications include the cost of re-establishing turf and the loss of potential revenue from poor playing conditions in the spring which can both be devastating for financial success. The winter of 2013-2014 was particularly devastating, leaving many golf course superintendents re-evaluating their desiccation prevention management plans. There are many prevention practices available to turf managers that vary greatly in affordability, effectiveness, and labor. These prevention practices aim to prevent excessive water loss and ...


Determination Of Plant Architecture And Component Phenotyping Based On Time-Lapse Image Analysis, Srinidhi Bashyam 2016 University of Nebraska-Lincoln

Determination Of Plant Architecture And Component Phenotyping Based On Time-Lapse Image Analysis, Srinidhi Bashyam

Computer Science and Engineering: Theses, Dissertations, and Student Research

Plant breeding and the development of new food production depend on accurate measurement of different phenotypes (observable physical traits) of a plant. The plant phenotypes play a very important role in the agronomic production. The successful computation of plant phenotypes largely depends on the determination of the architecture of the plant, i.e., the arrangement of its parts (leaves, stems, flowers, etc.) relative to each other, and how the size, shape, and positions of those parts change over time. Researchers and breeders extract valuable information from these types of data to make an informed decision on which individuals to advance ...


Improved Production Systems For Common Bean On Phaeozem Soil In South-Central Uganda, Lance H. Goettsch, Andrew W. Lenssen, Russell S. Yost, Ebby S. Luvaga, Onesmus Semalulu, Moses Tenywa, Robert E. Mazur 2016 Iowa State University

Improved Production Systems For Common Bean On Phaeozem Soil In South-Central Uganda, Lance H. Goettsch, Andrew W. Lenssen, Russell S. Yost, Ebby S. Luvaga, Onesmus Semalulu, Moses Tenywa, Robert E. Mazur

Andrew W. Lenssen

Common bean (Phaseolus vulgaris L.) is the most important grain legume in Uganda. Beans managed under conventional systems range in yield from 500 to 800 kg ha-1, with a yield gap of about 75%. The objective of this study was to compare the productivity and net profitability of four bean cultivars grown under three management systems on Phaeozem soil (Mollisol) in Masaka District, Uganda. The experimental design was a randomized incomplete block in a split-plot arrangement. Management system was the whole-plot factor and included the Conventional Farmer (CFS), Improved Farmer (IFS), and High Input systems (HIS). Management systems differed for ...


Forage Intake And Wastage By Ewes In Pea/Hay Barley Swath Grazing And Bale Feeding Systems, Erin E. Nix, Devon L. Ragen, Janice G. P. Bowman, Rodney W. Kott, Mark K. Petersen, Andrew W. Lenssen, Patrick G. Hatfield, Emily C. Glunk 2016 Montana State University

Forage Intake And Wastage By Ewes In Pea/Hay Barley Swath Grazing And Bale Feeding Systems, Erin E. Nix, Devon L. Ragen, Janice G. P. Bowman, Rodney W. Kott, Mark K. Petersen, Andrew W. Lenssen, Patrick G. Hatfield, Emily C. Glunk

Andrew W. Lenssen

Harvested feed costs, particularly during the winter, are traditionally the highest input associated with a ruminant livestock operation. Although swath grazing has been practiced for over 100 years and literature exists for cattle use of swath grazing, no published results are available on use of swath grazing by sheep. Sixty mature, white-faced ewes were used in a completely randomized design repeated 2 years to evaluate whether feeding method (swath grazed or fed as baled hay in confinement) of intercropped field pea (Pisum sativum L.) and spring barley (Hordeum vulgare L.) forage affected ewe ADG (average daily gain), forage DMI (dry ...


Impact Of A Corn-Living Mulch Cropping System On Soil C- And N-Dynamics, Chumki Banik, Cynthia Bartel, David A. Laird, Kenneth J. Moore, Andrew W. Lenssen 2016 Iowa State University

Impact Of A Corn-Living Mulch Cropping System On Soil C- And N-Dynamics, Chumki Banik, Cynthia Bartel, David A. Laird, Kenneth J. Moore, Andrew W. Lenssen

Andrew W. Lenssen

Use of a living mulch in a continuous corn cropping system can potentially protect the soil from erosion and increase organic C inputs into the soil thereby enhancing soil quality and facilitating greater harvest corn stover for bio-energy production. The objective of this study is to evaluate soil C- and N-dynamics under a corn-living mulch system that includes a shallow rooted perennial cover crop, strip tillage, and spring burn down. This study hypothesized that a well managed shallow rooted perennial cover crop can improve soil quality by increasing soil C storage and synergistically distributing soil nutrients. Here we report impacts ...


Kenaf Productivity And Morphology. When Grown In Iowa And In Kentucky. Poster Number, Marie Bouguignon, Kenneth J. Moore, Andrew W. Lenssen, Sotirios V. Archontoulis, Ben M. Goff, Brian S. Baldwin 2016 Iowa State University

Kenaf Productivity And Morphology. When Grown In Iowa And In Kentucky. Poster Number, Marie Bouguignon, Kenneth J. Moore, Andrew W. Lenssen, Sotirios V. Archontoulis, Ben M. Goff, Brian S. Baldwin

Andrew W. Lenssen

Natural fibers are a promising alternative to synthetic fibers for reinforcing plastic or other composite materials, or fuel purposes. Kenaf (Hibiscus cannabinus L.), a fiber crop is grown to a limited extent in the U.S. predominantly in the Southern states. Producing kenaf in the Midwestern U.S. could provide a local source of these fibers for use in a number of manufactured products and potentially for use as a biofuel feedstock. The objectives of this study were to: 1) compare the productivity and the morphology of kenaf cultivars ‘Tainung 2’ and ‘Whitten’ when grown in Iowa and Kentucky and ...


Suitability Of Winter Canola (Brassica Napus) For Enhancing Summer Annual Crop Rotations In Iowa, Mary H. Wiedenhoeft, Rafael A. Martinez-Feria, Thomas C. Kaspar, Andrew W. Lenssen 2016 Iowa State University

Suitability Of Winter Canola (Brassica Napus) For Enhancing Summer Annual Crop Rotations In Iowa, Mary H. Wiedenhoeft, Rafael A. Martinez-Feria, Thomas C. Kaspar, Andrew W. Lenssen

Andrew W. Lenssen

Winter canola shows promise as an addition to crop rotations in Iowa. This project determined optimal seeding dates for this cover crop and explored practices to enhance production. It was estimated that the latest Iowa seeding date varies from around August 31 in the north to September 12 in the southeast.


Sheep Grazing Enhances Coarse Relative To Microbial Organic Carbon In Dryland Cropping Systems, Joy L. Barsotti, Upendra M. Sainju, Andrew W. Lenssen, Zach J. Miller, Patrick G. Hatfield 2016 United States Department of Agriculture

Sheep Grazing Enhances Coarse Relative To Microbial Organic Carbon In Dryland Cropping Systems, Joy L. Barsotti, Upendra M. Sainju, Andrew W. Lenssen, Zach J. Miller, Patrick G. Hatfield

Andrew W. Lenssen

Sheep (Ovis aries L.) grazing, a cost-effective method of weed control compared with herbicide application and tillage, may influence soil C fractions by consuming crop residue and weeds and returning C through feces and urine to the soil. We examined the effect of three weed management practices (sheep grazing, herbicide application, and tillage) and two cropping sequences (continuous spring wheat [Triticum aestivum L.] [CSW] and spring wheat-pea [Pisum sativum L.]/barley [Hordeum vulgare L.] mixture hay-fallow [W-P/B-F]) on soil microbial biomass C (MBC), potential C mineralization (PCM), and particulate organic C (POC) in relation to soil organic C (SOC ...


Soybean Response To Drought, Andrew W. Lenssen 2016 Iowa State University

Soybean Response To Drought, Andrew W. Lenssen

Andrew W. Lenssen

Although drought typically is an infrequent occurrence in Iowa, 2012 has been an exception to the rule. Winter, spring and early summer precipitation has been below long-term average, and soybeans in some areas of the state are experiencing periodic water stress due to inadequate available water content in upper soil depths. Farmers have asked whether drought stress early in the season can influence yield if precipitation levels approach long-term average later in the season.


Optimal Agricultural Practices For Growing Kenaf In Iowa, Marie Bouguignon, Kenneth J. Moore, Sotirios V. Archontoulis, Andrew W. Lenssen, Brian S. Baldwin, Danielle Marie Wilson 2016 Iowa State University

Optimal Agricultural Practices For Growing Kenaf In Iowa, Marie Bouguignon, Kenneth J. Moore, Sotirios V. Archontoulis, Andrew W. Lenssen, Brian S. Baldwin, Danielle Marie Wilson

Andrew W. Lenssen

The demand for natural fibers is increasing worldwide due to a growing interest in using renewable sources in place of those derived from petrochemicals. Kenaf (Hibiscus cannabinus L.) is a promising biorenewable resource for natural fibers that has rarely been grown in the Midwest. Literature is abundant about effects of management practices on kenaf productivity and fiber yield, but few studies have evaluated their interactions. The objectives of this study were to: 1) determine management practices leading to optimal kenaf and fiber yield; 2) evaluate stem height, basal diameter, and leaf area index (LAI) over the growing season; and 3 ...


Nitrogen Balance In Response To Dryland Crop Rotations And Cultural Practices, Upendra M. Sainju, Andrew W. Lenssen, Brett L. Allen, William B. Stevens, Jalal D. Jabro 2016 United States Department of Agriculture

Nitrogen Balance In Response To Dryland Crop Rotations And Cultural Practices, Upendra M. Sainju, Andrew W. Lenssen, Brett L. Allen, William B. Stevens, Jalal D. Jabro

Andrew W. Lenssen

Nitrogen balance provides a measure of agroecosystem performance and environmental sustainability by taking into accounts of N inputs and outputs and N retention in the soil. The objective of this study was to evaluate N balance based on N inputs and outputs and soil N sequestration after 7 yr in response to five dryland crop rotations (two 4-yr stacked and two 4-yr alternate-year rotations and one monocropping) and two cultural practices arranged in a split-plot design in the northern Great Plains, USA. Stacked rotations were durum (Triticum turgidum L.)-durum-canola (Brassica napus L.)-pea (Pisum sativum L.) (D-D-C-P) and durum-durum-flax ...


Cover Crop Options And Mixes For The Upper Midwest: Is A Winter Rye Monoculture The Only Option?, Seth Appelgate, Andrew Lenssen 2016 Iowa State University

Cover Crop Options And Mixes For The Upper Midwest: Is A Winter Rye Monoculture The Only Option?, Seth Appelgate, Andrew Lenssen

Andrew W. Lenssen

Winter rye (Secale cereale L.) is the predominant cover crop being planted by corn and soybean farmers in the upper Midwest. Winter rye is an excellent nitrogen scavenger, grows at a lower base temperature than most other potential cover crops, is very winter hardy, accumulates high levels of residue, and decreases soil erosion. In recent years, cover crop companies and different interest groups have been promoting the benefits of cover crop mixes and new cover crop species. Our study was designed to test new cover crop options and cover crop mixes for their performance in corn-soybean systems in the upper ...


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