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Full-Text Articles in Agricultural Science

Evaluating Opportunities For Integrated Crop Livestock Systems In Eastern Nebraska, Elizabeth Kay Christenson Jul 2020

Evaluating Opportunities For Integrated Crop Livestock Systems In Eastern Nebraska, Elizabeth Kay Christenson

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

Current agricultural systems focused on production of few commodities are facing production, economic, and environmental challenges. To address these challenges, Integrated Crop Livestock Systems (ICLS) have emerged through three primary methods 1) perennial grasslands for grazing and/or hay production, 2) crop residue grazing, and 3) cover crop grazing. To evaluate potential of ICLS mitigating current challenges, a field scale model ICLS was developed in 2015. The ICLS includes 4-ha each of ‘Newell’ smooth bromegrass (Bromus inermis L.), ‘Liberty’ switchgrass (Panicum virgatum L.), and ‘Shawnee’ switchgrass. The ICLS also included 8-ha of continuous corn (Zea mays L.). In …


Soil-Nitrogen, Potentially Mineralizable-Nitrogen, And Field Condition Information Marginally Improves Corn Nitrogen Management, Jason Clark, Fabián G. Fernández, Kristen S. Veum, James J. Camberato, Paul R. Carter, Richard Ferguson, David W. Franzen, Daniel E. Kaiser, Newell R. Kitchen, Carrie A.M. Laboski, Emerson Nafziger, Carl J. Rosen, John E. Sawyer, John F. Shanahan Jul 2020

Soil-Nitrogen, Potentially Mineralizable-Nitrogen, And Field Condition Information Marginally Improves Corn Nitrogen Management, Jason Clark, Fabián G. Fernández, Kristen S. Veum, James J. Camberato, Paul R. Carter, Richard Ferguson, David W. Franzen, Daniel E. Kaiser, Newell R. Kitchen, Carrie A.M. Laboski, Emerson Nafziger, Carl J. Rosen, John E. Sawyer, John F. Shanahan

Department of Agronomy and Horticulture: Faculty Publications

Anaerobic potentially mineralizable nitrogen (PMN) combined with preplant nitrate test (PPNT) or pre-sidedress nitrate test (PSNT) may improve corn (Zea mays L.) N management. Forty-nine corn N response studies were conducted across the U.S. Midwest to evaluate the capacity of PPNT and PSNT to predict grain yield, N uptake, and economic optimal N rate (EONR) when adjusted by soil sampling depth, soil texture, temperature, PMN, and initial NH4–N from PMN analysis. Pre-plant soil samples were obtained for PPNT (0- to 30-, 30- to 60-, 60- to 90-cm depths) and PMN (0- to 30-cm depth) before corn planting …


A Survey Of Dairy-Goat Keeping In Zanzibar, Tiffanie Stone, Charles A. Francis, L. O. Eik Jul 2020

A Survey Of Dairy-Goat Keeping In Zanzibar, Tiffanie Stone, Charles A. Francis, L. O. Eik

Department of Agronomy and Horticulture: Faculty Publications

Dairy goats with improved genetics for milk production were recently introduced onto small-scale farms in Zanzibar through governmental and non-governmental projects. These projects were meant to support small-scale farmers by improving both income and household nutrition through milk production. No follow up had been conducted to understand what effects dairy goat keeping had on these small-scale farms, or how they could be improved. A survey of 193 dairy goat farmers in Zanzibar was conducted, including 30% and 60% of all dairy goat farmers on Unguja and Pemba, the two largest islands, respectively. The objective was to understand the impact keeping …


Developing A High-Throughput Method To Screen Soybean Germplasm For Hypoxia Tolerance In Hydroponic Systems, Derrick Harrison Jul 2020

Developing A High-Throughput Method To Screen Soybean Germplasm For Hypoxia Tolerance In Hydroponic Systems, Derrick Harrison

Graduate Theses and Dissertations

Soybean [Glycine max (Merr.)], the second most planted crop in the United States, is sensitive to field flooding due to depletion of oxygen and accumulation of CO2 in the rhizosphere. There is a need to breed cultivars that are adapted to areas prone to flooding, but field evaluations in the U.S. are limited because of time (one generation per year) and availability of resources (impermeable soils, irrigation, equipment to build levees). The purpose of this study was to develop and execute a protocol of germplasm screening for hypoxia tolerance using hydroponics in a controlled greenhouse environment. Germination rates and vigor …


Helminths Associated With Terrestrial Slugs In Some Parts Of Europe, Anna Filipiak, Solveig Haukeland, Kamila S. Zając, Dorota Lachowska-Cierlik, Bjørn A. Hatteland Jul 2020

Helminths Associated With Terrestrial Slugs In Some Parts Of Europe, Anna Filipiak, Solveig Haukeland, Kamila S. Zając, Dorota Lachowska-Cierlik, Bjørn A. Hatteland

All Peer-Reviewed Publications

A survey of helminths associated with terrestrial slugs focusing on the invasive Arion vulgaris and the native A. ater was conducted on populations from France, Germany, Netherlands, Norway and Poland. In total, 648 terrestrial slugs were collected from 18 sample sites, and identified by means of morphological examination, dissection of genitalia and molecular analysis using mitochondrial DNA. In addition to A. vulgaris and A. ater, also A. vulgaris/A. rufus hybrids and A. ater/A. rufus hybrids were collected. Helminth species were identified based on morphological features and sequencing of the 18S and ITS rDNA regions. The parasites included four nematode species: …


Performance Evaluation Of Four Arkansas Table Grape Cultivars Grown On Three Trellis Systems Under High Tunnels At Two Locations In Arkansas., Jose Hernandez Jul 2020

Performance Evaluation Of Four Arkansas Table Grape Cultivars Grown On Three Trellis Systems Under High Tunnels At Two Locations In Arkansas., Jose Hernandez

Graduate Theses and Dissertations

Grapevines (Vitis vinifera L.) are one of the most important horticultural crops world-wide. In the southern U.S. region, hot and humid climate accompanied by high pest pressure requires high levels of labor and pesticide inputs, making open field table grape production unsustainable. Previous research at University of Arkansas has demonstrated that table grape production under high tunnels (HTs) is a viable option to overcome biotic and abiotic challenges in the region. This project evaluated two HTs established in Arkansas. In the spring of 2014, at Fayetteville, three table grape cultivars (Faith, Gratitude, and Jupiter) were established in an 8 x …


Introducing An Indigenous Non-Toxigenic Aspergillus Flavus Strain Isolated From Iraqi Corn Grains As A Bio-Control Agent To Reduce Aflatoxin Contamination In Corn Grains, Ali Almatakeez Jul 2020

Introducing An Indigenous Non-Toxigenic Aspergillus Flavus Strain Isolated From Iraqi Corn Grains As A Bio-Control Agent To Reduce Aflatoxin Contamination In Corn Grains, Ali Almatakeez

Graduate Theses and Dissertations

Mycotoxin contamination of cereal crops, such as maize and sorghum, is a global concern because of the potential health effects on humans and animals. Although substantial research has been conducting regarding mycotoxin prevention and mitigation, little information is available about the association of mycotoxin-producing fungi with corn and sorghum grain in Iraq. Identifying and refining indigenous atoxigenic strains to reduce mycotoxin contamination of maize and sorghum has the potential to enhance the nutritional value of these grains while reducing economic losses. However, to our knowledge, this tactic has not yet been adopted by agricultural authorities and farmers in Iraq. To …


Which Vegetation Sampling Approach Is More Efficient For A Rangeland Inventory?, Gh. Ghanbarian, M. Mesdaghi, H. Barani, M. Azimmohseni Jun 2020

Which Vegetation Sampling Approach Is More Efficient For A Rangeland Inventory?, Gh. Ghanbarian, M. Mesdaghi, H. Barani, M. Azimmohseni

IGC Proceedings (1977-2023)

No abstract provided.


Presentation Of Diversity, Life Forms And Chorology Of Plant Species In Rangelands Of Jahrom, Gh. Ghanbarian, E. Jafari, A. Hatami, M. Tayebi Khorrami Jun 2020

Presentation Of Diversity, Life Forms And Chorology Of Plant Species In Rangelands Of Jahrom, Gh. Ghanbarian, E. Jafari, A. Hatami, M. Tayebi Khorrami

IGC Proceedings (1977-2023)

No abstract provided.


Analysis Of C‐Banding And Karyotype Of Chromosome Of Two Galega Species, Hongwen Gao, Xinyu Zhang, Zan Wang Jun 2020

Analysis Of C‐Banding And Karyotype Of Chromosome Of Two Galega Species, Hongwen Gao, Xinyu Zhang, Zan Wang

IGC Proceedings (1977-2023)

No abstract provided.


Obstacles Of Determining Compensation In Grassland Ecological Values, Zhiyi Gai, Xiufang Gao Jun 2020

Obstacles Of Determining Compensation In Grassland Ecological Values, Zhiyi Gai, Xiufang Gao

IGC Proceedings (1977-2023)

No abstract provided.


Application Of Analytical Hierarchy Process (Ahp) In Priority Classification Of Utilization Measurement Methods In Agropyrun Trichophrum Stands In Upland Grasslands Of Iran, Fazel Amiri Jun 2020

Application Of Analytical Hierarchy Process (Ahp) In Priority Classification Of Utilization Measurement Methods In Agropyrun Trichophrum Stands In Upland Grasslands Of Iran, Fazel Amiri

IGC Proceedings (1977-2023)

No abstract provided.


Assessment Of Important Environmental Factors Affecting Agropyron Trichophrum Establishment By Using An Ordination Method, Fazel Amiri, M. R. Chaichi, T. Tabatabai Jun 2020

Assessment Of Important Environmental Factors Affecting Agropyron Trichophrum Establishment By Using An Ordination Method, Fazel Amiri, M. R. Chaichi, T. Tabatabai

IGC Proceedings (1977-2023)

No abstract provided.


Inter‐Annual Dynamics Of Grassland Yields And Assessment Of Herbage Supply In The Headwater Region Of Three Rivers Over 18 Years, Jiangwen Fan, Junbang Wang, Zhouqi Chen, Huaping Zhong, Quanqin Shao, Jiyuan Liu, Wenyan Zhang Jun 2020

Inter‐Annual Dynamics Of Grassland Yields And Assessment Of Herbage Supply In The Headwater Region Of Three Rivers Over 18 Years, Jiangwen Fan, Junbang Wang, Zhouqi Chen, Huaping Zhong, Quanqin Shao, Jiyuan Liu, Wenyan Zhang

IGC Proceedings (1977-2023)

No abstract provided.


Dynamics Of Leymus Chinensis And Hierochloe Glabrain Grassland Plantings Within The Songnen Plains Of China, Guangzhi Fan, Yunfei Yang Jun 2020

Dynamics Of Leymus Chinensis And Hierochloe Glabrain Grassland Plantings Within The Songnen Plains Of China, Guangzhi Fan, Yunfei Yang

IGC Proceedings (1977-2023)

No abstract provided.


Testing The Neutral Theory Of Plant Communities In Subalpine Meadow, Xiaoguang Du, Shurong Zhou Jun 2020

Testing The Neutral Theory Of Plant Communities In Subalpine Meadow, Xiaoguang Du, Shurong Zhou

IGC Proceedings (1977-2023)

No abstract provided.


Effects Of Grazing On Reproductive Characteristics Of Stipabreviflora In Desert Steppe, Lixia Du, Qingfeng Li Jun 2020

Effects Of Grazing On Reproductive Characteristics Of Stipabreviflora In Desert Steppe, Lixia Du, Qingfeng Li

IGC Proceedings (1977-2023)

No abstract provided.


Long‐Term Cattle Grazing Affected Specific Leaf Area And Its Components In Two Range Plant Species, Xuejun Dong, Paul Nyren, Bob Patton, Brian Kreft, Anne Nyren Jun 2020

Long‐Term Cattle Grazing Affected Specific Leaf Area And Its Components In Two Range Plant Species, Xuejun Dong, Paul Nyren, Bob Patton, Brian Kreft, Anne Nyren

IGC Proceedings (1977-2023)

No abstract provided.


Photosynthesis And Soil Respiration From A Mixed‐Grass Prairie: Effects Of Grazing And Drought, Xuejun Dong, Paul Nyren, Bob Patton, Guojie Wang, Brian Kreft, Anne Nyren, Ryan Limb, Don Kirby, Larry Cihacek Jun 2020

Photosynthesis And Soil Respiration From A Mixed‐Grass Prairie: Effects Of Grazing And Drought, Xuejun Dong, Paul Nyren, Bob Patton, Guojie Wang, Brian Kreft, Anne Nyren, Ryan Limb, Don Kirby, Larry Cihacek

IGC Proceedings (1977-2023)

No abstract provided.


Effect Of Salt Stress On The Tall Wheatgrass At The Stage Of Seedling, Kuanhu Dong, Yanqing Liu Jun 2020

Effect Of Salt Stress On The Tall Wheatgrass At The Stage Of Seedling, Kuanhu Dong, Yanqing Liu

IGC Proceedings (1977-2023)

No abstract provided.


Diachronic Analysis Of Vegetation In The Sylvopastoral Zone (Senegal): What Lesson To Learn From?, A. T. Diop, A. Diouf, A. Wane Jun 2020

Diachronic Analysis Of Vegetation In The Sylvopastoral Zone (Senegal): What Lesson To Learn From?, A. T. Diop, A. Diouf, A. Wane

IGC Proceedings (1977-2023)

No abstract provided.


The Effect Of Hay Covered On Soil Evaporation, Xiangxin Cui, Yong Gao, Xingyuan Zhang Jun 2020

The Effect Of Hay Covered On Soil Evaporation, Xiangxin Cui, Yong Gao, Xingyuan Zhang

IGC Proceedings (1977-2023)

No abstract provided.


Experimental Study On Stipa Bungeana Grassland Of Enclosed, Cutting And Grazing Succession For 26 Years Semi‐Arid Region Of Northwest, J. M. Cheng, L. P. Qiu, Q. Wang, J. Cheng, X. N. Jia Jun 2020

Experimental Study On Stipa Bungeana Grassland Of Enclosed, Cutting And Grazing Succession For 26 Years Semi‐Arid Region Of Northwest, J. M. Cheng, L. P. Qiu, Q. Wang, J. Cheng, X. N. Jia

IGC Proceedings (1977-2023)

No abstract provided.


Variation Of Pod Activity In Roots Of Different Fall Dormancy Alfalfa Under The Autumn Cutting, Libo Chen, Lei Liu, Zhiyong Li, Meizhen Wang Jun 2020

Variation Of Pod Activity In Roots Of Different Fall Dormancy Alfalfa Under The Autumn Cutting, Libo Chen, Lei Liu, Zhiyong Li, Meizhen Wang

IGC Proceedings (1977-2023)

No abstract provided.


Grazing Behaviors Of Goats And Sheep In Winter And Spring In A Desert Steppe, H. J. Chen, Mingjiu Wang, Y. M. Shan, Zh. Y. Wu, Zh. Q. Li Jun 2020

Grazing Behaviors Of Goats And Sheep In Winter And Spring In A Desert Steppe, H. J. Chen, Mingjiu Wang, Y. M. Shan, Zh. Y. Wu, Zh. Q. Li

IGC Proceedings (1977-2023)

No abstract provided.


Effects Of Different Enzyme Combination And Dissociation‐Time On The Protoplast Isolation Of Alfalfa, Aiping Chen, Yupeng Luo, Run Yan, Bo Zhang Jun 2020

Effects Of Different Enzyme Combination And Dissociation‐Time On The Protoplast Isolation Of Alfalfa, Aiping Chen, Yupeng Luo, Run Yan, Bo Zhang

IGC Proceedings (1977-2023)

No abstract provided.


Projected Surface Water For Fruit And Vegetable Irrigation Under A Changing Climate In The Us, Marty Matlock, Greg Thoma, Kieu Ngoc Le, Eric Cummings, Zach Morgan, Andrew Shaw Jun 2020

Projected Surface Water For Fruit And Vegetable Irrigation Under A Changing Climate In The Us, Marty Matlock, Greg Thoma, Kieu Ngoc Le, Eric Cummings, Zach Morgan, Andrew Shaw

Water Systems

Increasing greenhouse gas concentrations in the atmosphere, resulting in climate impacts, are raising concerns over the hydrologic cycle and its effects upon agricultural productivity. If rainfall patterns change, meeting an increased demand for fruits and vegetables will pose a challenge for domestic production regions in the United States (U.S.). Information on potential water supply scarcity in the current production regions provides decision makers with critical information for risk mitigation for future production. We used a hydrologic balance-based model of historic and future water availability to evaluate risk of available irrigation water to support major fruit and vegetable production the US. …


Analysis Of Photosynthetic Characteristics Of Heteropogon Contortusin Arid‐Hot Valley Areas Of Jinsha River, Yufen Bi, X. L. Ma, T. Sun Jun 2020

Analysis Of Photosynthetic Characteristics Of Heteropogon Contortusin Arid‐Hot Valley Areas Of Jinsha River, Yufen Bi, X. L. Ma, T. Sun

IGC Proceedings (1977-2023)

No abstract provided.


The Caloric Values Of Main Plant Species And Functional Groups In The Steppe Communities Of Xilin River Basin, Yajing Bao, Zhenghai Li Jun 2020

The Caloric Values Of Main Plant Species And Functional Groups In The Steppe Communities Of Xilin River Basin, Yajing Bao, Zhenghai Li

IGC Proceedings (1977-2023)

No abstract provided.


Plant Energy Functional Groups And Their Coupling Relationship With The Functional Degradation Of Steppe Ecosystem, Yajing Bao, Zhenghai Li, Xingguo Han Jun 2020

Plant Energy Functional Groups And Their Coupling Relationship With The Functional Degradation Of Steppe Ecosystem, Yajing Bao, Zhenghai Li, Xingguo Han

IGC Proceedings (1977-2023)

No abstract provided.