Nicholas E Clark

Agronomy and Nutrient Management Farm Advisor

Cooperative Extension Kings County
680 Campus Drive
Suite A
Hanford, CA 93230
559-852-2788
neclark@ucanr.edu

http://cekings.ucanr.edu

Also in:
Tulare County
Fresno County

Education

MS Plant Sciences, CSU Fresno. 2014

Specialty

Areas of Expertise (click to see all ANR academics with this expertise)

• Forage Crops
• Cotton - General
• Grains - General
• Insects, Mites, and Other Arthropods Affecting Plants
• Pathogens and Nematodes Affecting Plants
• Soil, Plant, Water, Nutrient Relationships
• Spanish
• Ipm
• Weeds

Bibliography

Peer Reviewed

• Santiago, Suzette; Light, Sarah, et al.; Clark, N.; Wang, Zheng; Mathesius, Konrad; Geisseler, D. (2022). "Seasonal Net Nitrogen Mineralization in the Topsoil of Subsurface Drip Irrigated Fields." Communications in Soil Science and Plant Analysis 54(5): 13.
• MIller, Christine M. F.; Clark, Nicholas E., et al.; Meyer, Deanne (2021). "Optimizing accuracy of measurement protocols for nitrogen application in dilute dairy manure." Journal of Environmental Quality
• Huynh, Bao Lam; Duong, Tra, et al.; Clark, Nicholas E.; Long, Rachael; Light, Sarah E.; Dahlquist-Willard, Ruth M.; Ehlers, Jeffrey D.; Close, Timothy J.; Roberts, Philip A. (2021). "Registration of aphid-resistant 'California Blackeye 77' cowpea." Journal of Plant Registrations 16(1): 8.
• Kanter, Jessica; Clark, Nicholas, et al.; Lundy, Mark Edward; Koundinya, Vikram; Leinfelder-Miles, Michelle; Long, Rachael; Light, Sarah E.; Brim-DeForest, Whitney B.; Linquist, Bruce; Putnam, Dan; Hutmacher, Robert B.; Pittelkow, Cameron M. (2021). "Top management challenges and concerns for agronomic crop production in California: Identifying critical issues for extension through needs assessment." Agronomy Journal 113(6): 17.
• Geisseler, D.; Miller, Kenneth, et al.; Aegerter, Brenna J.; Clark, N.; Miyao, Eugene M. (2019). "Estimation of Annual Soil Nitrogen Mineralization Rates usin an Organic-Nitrogen Budget Approach." Soil Sci. Soc. Am. J 83(4): 1227-1235.
• Long, Rachael; Leinfelder-Miles, Michelle, et al.; Mathesius, Konrad; Bali, Khaled; Light, Sarah E.; Galla, Mariano; Mueller, Shannon; Fulton, Allan; Clark, N.; Meyer, R. D. (2019). Garbanzo Bean (Chickpea) Production in California. Regents of the University of California.
• Miller, Kenneth; Aegerter, Brenna J., et al.; Clark, N.; Leinfelder-Miles, Michelle; Miyao, Eugene M.; Wilson, Rob; Geisseler, D. (2019). "Relationship between soil properties and nitrogen mineralization in undisturbed soil cores from California agroecosystems." Communications in Soil Science and Plant Analysis 50(1)
• Zheng, Z.; Clark, N., et al.; Keremane, M.; Lee, R.; Wallis, C.; Deng, X.; Chen, J (2014). "Whole genome sequence of "Candidatus Liberibacter solanacearum" Strain R1 from California." Genome Announcements 2(6)

Non-Peer Reviewed

• Riar, Ranjit; Clark, N., et al.; Goorahoo, Dave; Arriaga, Diego (2023). "ABSTRACT: Determination of Nitrogen Rate and Timing on Yield of Garbanzo Beans (Cicer arietinum L.) Grown Under Sub-Surface Drip Irrigation System." 2023 CA ASA Plant and Soil Conference Proceedings: 1.
• Clark, N.; Shrestha, Anil, et al.; Villicana, Paola; Searcy, Kiera; Martinez, Walter (2023). "ABSTRACT: Is ALS Inhibitor Herbicide Resistand Common Chickweed a Problem in California Small Grain Production?" 2023 CA Weed Science Society Proceedings
• Martinez, Alexis M.; Pexton, Joyce, et al.; Clark, N.; Meyer, D. (2023). "Comparing Plant Essential Macronutrient Concentrations of Various Manure Sources from California Dairies." 2023 CA ASA Plant and Soil Conference Proceedings: 2.
• Clark, N.; Nelsen, T., et al.; Galdi, G.; Getts, Thomas; Leinfelder-Miles, Michelle; Light, Sarah; Mathesius, Konrad; Lundy, Mark (2023). "Improved Small Grain Nitrogen Use Efficiency with California Site-Specific Decision Support." WERA-103 Western Nutrient Management Conference Proceedings 2023: 6.
• Clark, N.; Shrestha, Anil, et al.; Waselkov, Katherine; Valdez-Herrera, Jennifer (2023). "New Instances of Herbicide Resistance in California Small Grain Crops." Progressive Crop Consultant 2023(September / October): 3.
• Roberts, Philip A.; Huynh, Bao Lam, et al.; Clark, N.; Matthews, W. C.; Light, Sarah; Leinfelder-Miles, Michelle; Long, R. F. (2022). "Blackeye Varietal Improvement - 2022 Progress Report." California Dry Bean Advisory Board Research Progress Reports
• Clark, N. (2022). "Common ALS inhibitor herbicides not controlling common chickweed in small grains?" Sacramento Valley Field Crops Newsletter: 4.
• Clark, N.; Fulford, Anthony, et al.; Hollingsworth, Joy; Pexton, Joyce; Meyer, D. (2022). Digesters make more than methane. Journal of Nutrient Management. W. D. Hoard & Sons Co. 2022, 2. March 4, 2022. https://issuu.com/hoardsdairyman/docs/22-jnm-q1
• Meyer, D.; Clark, N., et al.; Heguy, J. (2022). "How to Calculate the Nutrients from Manure Applied to Fields." Golden State Dairy Newsletter 14(2): 1.
• Pexton, Joyce; Clark, N., et al.; Meyer, D. (2022). "Impact of Dairy Sludge Management on Nutrient Management Plans (Abstract)." 2022 ASA-CSSA-SSSA International Annual Meeting Proceedings
• Dahlke, H.; Ganot, Yonatan, et al.; Clark, N. (2022). "Management strategies to address drought and limited water supplies." Progressive Forage Magazine 2022(April)
• Clark, N.; Hollingsworth, Joy, et al.; Chavez, Ruben; Yang, Pahoua; Martinez, Walter; Hansen, Erik; Nelsen, T.; Lundy, Mark (2022). N-Rich Reference Zone Case Study: Kings County 2021-22. UC Small Grains. UCANR. November 1, 2022. https://ucanr.edu/sites/small-grains/files/374707.pdf
• Pexton, Joyce; Meyer, D., et al.; Clark, N. (2022). "Sludge: What it's Worth." Golden State Dairy Newsletter 14(4): 1.
• Heguy, J.; Clark, N. (2022). "Troubleshooting Dry Matter Results." Golden State Dairy Newsletter 14(2): 2.
• Clark, N.; Fulford, Anthony, et al.; Hollingsworth, Joy; Pexton, Joyce; Heguy, J.; Meyer, D. (2022). "Vacuumed manure influences fertilizer value for crops on-farm and off-farm." Progressive Dairy(20): 3.
• Dahlberg, Jeff; Hutmacher, Robert, et al.; Putnam, D. H.; Clark, N.; Pedraza, Julie; Allison, Cayci; de Ben, Chris; Solorio, Merf (2021). 2020 Field Research on Sorghum Forages for the California Dairy Industry. Reports - Forage.J. Dahlberg. California, UC ANR. https://ucanr.edu/sites/sorghum/files/342257.pdf
• Dahlberg, Jeffery; Hutmacher, Robert, et al.; Putnam, D. H.; Clark, N.; de Ben, Chris; Solorio, Rafael; Pedraza, Julie (2021). 2020 Field Research on Sorghum Grain Hybrids for California. Reports - Grain.J. Dahlberg. California, UC ANR. https://ucanr.edu/sites/sorghum/files/341413.pdf
• Dahlberg, Jeffery; Hutmacher, Robert, et al.; Putnam, Daniel; Clark, Nicholas; deBen, Chris; Solorio, Rafael; Pedraza, Julie (2021). 2020 Field Research on Sorghum Grain Hybrids for California. https://ucanr.edu/sites/sorghum/files/341413.pdf
• Nelsen, T.; Grover, Salvador, et al.; Lundy, Mark; Reynoso, Leonardo; Shydlowski-Besmer, Maya; Clark, N.; Mathesius, Konrad; Halleck, B.; Muraka, Chaitanya Lakshmi (2021). 2020-21 UC Small Grain Variety Testing Results. UC Small Grains Blog.. Mark Lundy. UC ANR. October 8, 2021. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=50633
• Lundy, Mark; Nelsen, T., et al.; Clark, N.; Galdi, G.; Getts, Thomas; Leinfelder-Miles, Michelle; Light, Sarah; Mathesius, Konrad (2021). "Achieving Efficient Nitrogen Fertilizer Management in California Wheat." 29th Annual FREP/WPH Nutrient Management Conference: 3.
• Roberts, Philip A.; Huynh, Bao Lam, et al.; Clark, N.; Matthews, W. C.; Light, Sarah; Long, R. F. (2021). "Blackeye Varietal Improvement - 2021 Progress Report." California Dry Bean Advisory Board Research Progress Reports
• Clark, N.; Heguy, J., et al.; Karle, Betsy; Meyer, D. (2021). "Challenges, Strategies, and Success with Dairy Nutrient Management Information Dissemination during a Pandemic (Abstract)." 2021 ASA-CSSA-SSSA International Annual Meeting Proceedings
• Geisseler, D.; Parikh, Sanjai, et al.; Clark, N.; Leinfelder-Miles, Michelle; Light, Sarah; Mathesius, Konrad; Wilson, Rob (2021). "Development of Site-Specific Nitrogen Fertilization Recommendations for Annual Crops." 29th Annual FREP/WPH Nutrient Management Conference: 4.
• Clark, Nick; Heguy, Jennifer (2021). "Don't Stress (Too Much) Over Drought-Stressed Corn." Golden State Dairy Newsletter 13(3): 2.
• Dahlberg, Jeffery; Hutmacher, Robert, et al.; Putnam, Daniel; Clark, Nicholas; Pedraza, Julie; Allison, Cayci; de Ben, Chris; Solorio, Merf (2021). Final Report UC-ANR: 2020 Field Research on Sorghum Forages for the California Dairy Industy. https://ucanr.edu/sites/sorghum/files/342257.pdf
• Mathesius, Konrad; Lundy, Mark E., et al.; Clark, Nicholas; de Souza Dias, Jose Luiz Carvalho (2021). Irrigation for wheat and other small grains in a drought year. UC Small Grains Blog.. Mark Lundy. California, UC ANR. June 11, 2021. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=47628
• Meyer, D.; Fulford, Anthony, et al.; Hollingsworth, Joy; Heguy, J.; Clark, N. (2021). "Moisture Content of Compost Bedded Pack Barns." Golden State Dairy Newsletter 13(4): 1.
• Lundy, Mark; Nelsen, T., et al.; Clark, N.; Leinfelder-Miles, Michelle; Mathesius, Konrad; Light, Sarah; Galdi, G.; Getts, Thomas (2021). New Tools to Improve N Management in California Small Grain Crops. UC Small Grains Blog.. Mark Lundy. UCANR. October 21, 2021. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=50718
• Hutmacher, Robert; Putnam, D. H., et al.; Light, Sarah; Clark, N.; Geisseler, D.; Koch, Geoffrey (2021). "Nitrogen Response of Industrial Hemp Cultivars Grown for CBD, Essential Oils." 29th Annual FREP/WPH Nutrient Management Conference: 4.
• Clark, N.; Nelsen, T., et al.; Lundy, Mark (2021). N-Rich Reference Zone Case Study: Kings County 2020-21. UC Small Grains. UCANR. October 20, 2021. https://ucanr.edu/sites/small-grains/files/359221.pdf
• Clark, Nicholas; Fulford, Anthony, et al.; Hollingsworth, Joy; Meyer, Deanne (2021). "Nutrient Content of Anaerobic Digester Digestate." Golden State Dairy Newsletter 13(3): 1.
• Clark, Nicholas; Fulford, Anthony, et al.; Hollingsworth, Joy; Meyer, Deanne (2021). "Nutrient Content of Vacuumed Manure." Golden State Dairy Newsletter 13(2): 1.

• de Souza Dias, Jose Luiz Carvalho; Clark, Nicholas, et al. (2021). Poor control of common chickweed with ALS-inhibitor herbicides reported in multiple small grain fields in the southern San Joaquin Valley. Is it a new case of herbicide resistance in California? UC Weed Science. Brad Hanson. California, UC ANR. August 4, 2021. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=50181; UC Small Grains Blog. Mark Lundy. California, UC ANR. August 4, 2021. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=50186

• Nelsen, Taylor; Lundy, Mark E., et al.; Grover, Salvador; Reynoso, Leonardo; Shydlowski-Besmer, Maya; Clark, Nicholas; Mathesius, Konrad; Solorio, Rafael M.; Halleck, Ben; Muraka, Chaitanya Lakshmi (2021). Preliminary yield results from fall-planted 2020-21 small grain variety results. UC Small Grains Blog.. Mark Lundy. California, UC ANR. August 11, 2021. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=50239
• Hollingsworth, Joy; Fulford, Anthony, et al.; Clark, Nicholas; Meyer, Deanne (2021). "Properties of Manure as a Nitrogen Fertilizer." On the Soil Horizon 4(3): 3.
• Light, Sarah; Clark, N., et al.; Nelsen, T.; Galdi, G.; Getts, Thomas; Leinfelder-Miles, Michelle; Mathesius, Konrad; Lundy, Mark (2021). "Remote Education and Demonstrations of Advanced Nitrogen Management Tools for Small Grains Growers in California." 2021 ASA-CSSA-SSSA International Annual Meeting Proceedings
• Kanter, Jessica; Clark, Nicholas, et al.; Lundy, Mark; Leinfelder-Miles, Michelle; Light, Sara E.; Linquist, Bruce; Long, Rachael; Koundinya, Vikram; Brim-DeForest, Whitney; Putnam, Daniel; Hutmacher, Robert; Pittelkow, Cameron (2021). Statewide Collaborative Needs Assessment for California Agriculture. 2021 CA-ASA Plant and Soil Conference Proceedings.
• Kanter, Jessica; Clark, N., et al.; Lundy, Mark; Leinfelder-Miles, Michelle; Light, Sarah E.; Linquist, Bruce; Long, R. F.; Koundinya, V.; Brim-DeForest, W.; Putnam, D. H.; Hutmacher, Robert; Pittelkow, C. (2021). "Statewide Collaborative Needs Assessment for California Agronomy." 2021 CA-ASA Plant and Soil Conference Proceedings
• Leinfelder-Miles, Michelle; Clark, Nick, et al.; Nelsen, Taylor; Getts, Tom; Mathesius, Konrad; Light, Sarah; Galdi, Giuliano; Lundy, Mark (2021). Using N-Rich Reference Zones to Inform In-Season Nitrogen Fertilization Practices in California Small Grains. Progressive Crop Consultant. JCS Marketing. March/April 2021. March 12, 2021. https://progressivecrop.com/2021/03/using-n-rich-reference-zones-to-inform-in-season-nitrogen-fertilization-practices-in-california-small-grains/
• Dahlberg, Jeffery; Hutmacher, Robert, et al.; Putnam, Daniel; Clark, Nicholas; deBen, Chris; Solorio, Rafael; Allison, Cayci (2020). 2019 Field Research on Sorghum Grain Hybrids for California. https://ucanr.edu/sites/sorghum/files/320053.pdf
• Karle, Betsy; Forero, Larry, et al.; Davy, Josh; Harper, John; Macon, Dan; Heguy, Jennifer; Clark, Nicholas; Stackhouse, Jeff; Shohr, Tracy; DePeters, Ed; Lile, David; Meyer, Deanne; Poppenga, Robert (2020). ABSTRACT: Effects of Wildfire Ash on California's Forage Crops. American Dairy Science Association Proceedings.
• Lundy, Mark; Nelsen, Taylor, et al.; Clark, Nicholas; Galdi, Giuliano; Getts, Thomas; Leinfelder-Miles, Michelle; Light, Sarah E.; Mathesius, Konrad (2020). Achieving Efficient Nitrogen Fertilizer Management in California Wheat. 2020 FREP/WPHA Nutrient Management Conference Proceedings.
• Roberts, Philip A.; Huynh, Bao Lam, et al.; Clark, N.; Matthews, W. C.; Light, Sarah; Long, R. F. (2020). "Blackeye Improvement CDBAB report 2020." California Dry Bean Advisory Board Research Progress Reports
• Huynh, Bao-Lam; Clark, N., et al.; Light, Sarah; Long, Rachael; Dahlquist-Willard, Ruth; Yang, M; Bullard, V.; Smither-Kopperl, M.; Matthews, W. C.; Ploeg, A. T.; Close, T. J.; Roberts, Philip A. (2020). California Cowpea Blackeye-Grain, Vegetable and Cover-Crop Improvement Program. 2020 CA-ASA Plant and Soil Conference Proceedings.
• Dahlberg, Jeffery; Hutmacher, Robert, et al.; Putnam, Daniel; Clark, Nicholas; Heguy, Jennifer; Meyer, Deanne; Robinson, Peter; Allison, Cayci; de Ben, Chris; Solorio, Merf (2020). Final Report: 2019 Field Research on Sorghum Forages for the California Dairy Industry. https://ucanr.edu/sites/sorghum/files/320042.pdf
• Hutmacher, Robert; Clark, Nicholas, et al.; Dahlberg, Jeffery; Angeles, Jorge (2020). Forage Sorghum and Corn Responses to Nitrogen and SDI Irrigation Rates. 2020 CA-ASA Plant and Soil Conference Proceedings.
• Kaffka, Stephen; Aksland, Gene, et al.; Robinson, Peter; Clark, Nicholas (2020). Growing and Feeding Sugarbeets on California Dairies, Part 1: Production and Quality at Harvest. 2020 California Dairy Sustainability Summit Proceedings.
• Robinson, Peter; Aksland, Gene, et al.; Clark, Nicholas; Kaffka, Stephen (2020). Growing and Feeding Sugarbeets on California Dairies, Part 2: Silage Quality and Feeding. 2020 California Dairy Sustainability Summit Proceedings.
• Clark, Nicholas; Getts, Thomas, et al.; Galdi, Giuliano C.; Nelsen, Taylor; Leinfelder-Miles, Michelle; Light, Sarah E.; Mathesius, Konrad; Lundy, Mark (2020). Hand-held electronic devices help you make better nitrogen fertilizer decisions. UC Small Grains Blog.. Mark Lundy. California, UC ANR. June 30, 2020. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=42903
• Leinfelder-Miles, Michelle; Clark, Nicholas, et al.; Light, Sarah E.; Mathesius, Konrad; Getts, Thomas; Galdi, Giuliano C.; Nelsen, Taylor; Lundy, Mark (2020). Implementing N-Rich Reference Zones to Inform In-Season Fertilization Practices. UC Small Grains Blog.. Mark Lundy. California, UC ANR. May 27, 2020. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=42576
• Clark, Nicholas; Hutmacher, Robert, et al.; Angermann, Till; Curtis, Chris; Angeles, Jorge; Halleck, Benjamin (2020). Manure Nutrient Recycling in a Corn-Wheat Silage Double Crop. 2020 California Dairy Sustainability Summit Proceedings.
• Lundy, Mark; Nelsen, Taylor, et al.; Mathesius, Konrad; Leinfelder-Miles, Michelle; Clark, Nicholas; Light, Sarah; Galdi, Giuliano C.; Getts, Thomas (2020). N management case studies: Utilizing N-rich reference zones in California small grain crops. UC Small Grains Blog.. Mark Lundy. California, UC ANR. October 16, 2020. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=43958
• Dahlberg, Jeffery; Al-Khatib, Kassim, et al.; Mesgaran, Mohsen; Ceseski, Alex; Clark, Nicholas (2020). New Apps Available for Controlling and Tracking Johnsongrass, a Top Ten Worldwide Weed. UC Weed Science.. Brad Hanson. California, UC ANR. May 4, 2020. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=41357
• Lundy, Mark; Nelsen, Taylor, et al.; Mathesius, Konrad; Clark, Nicholas; Light, Sarah E.; Leinfelder-Miles, Michelle; Getts, Thomas; Galdi, Giuliano C. (2020). New resources available for conducting and interpreting soil nitrate quick tests. UC Small Grains Blog.. Mark Lundy. California, UC ANR. May 13, 2020. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=41422
• Angeles, Jorge; Clark, Nicholas, et al.; Hutmacher, Robert; Angermann, Till (2020). Nitrogen Fertility and Removal in San Joaquin Valley Corn and Wheat Silage Rotations. 2020 CA-ASA Plant and Soil Conference Proceedings.
• Clark, N.; Nelsen, T., et al.; Lundy, Mark (2020). N-Rich Reference Zone Case Study: Kings County 2019-20. UC Small Grains. UCANR. October 14, 2020. https://ucanr.edu/sites/small-grains/files/337600.pdf
• Halleck, Benjamin; Angeles, Jorge, et al.; Clark, Nicholas (2020). Performance of Cyclaniliprole against Lygus in Safflower. 2020 CA-ASA Plant and Soil Conference Proceedings.
• Kanter, Jessica; Clark, Nicholas, et al.; Lundy, Mark; Leinfelder-Miles, Michelle; Light, Sara E.; Linquist, Bruce; Brim-DeForest, Whitney; Putnam, Daniel; Long, Rachael; Koundinya, Vikram; Pittelkow, Cameron (2020). Statewide Collaborative Needs Assessment for California Agronomy. 2020 ASA-CSSA-SSSA International Annual Meeting Proceedings.
• Hutmacher, Robert; Clark, N., et al.; Dahlberg, Jeffery; Angeles, Jorge (2019). "ABSTRACT: Evaluation of Nitrogen Fertilization and Drip Irrigation Levels on Yields of San Joaquin Valley, California, Forage Corn and Sorghum Cultivars." 13th Western Nutrient Management Conference Proceedings 2019
• Bourquin, Andrea; Clark, N., et al.; Swett, Cassandra (2019). "ABSTRACT: Fusarium falciforme is a Previously Unrecognized Pathogen of Cowpeas, Present in California." 2019 CA Plant and Soil Conference Proceedings 2019
• Heguy, J.; Clark, N., et al.; Meyer, D. (2019). "Abstract: Physical and chemical characteristics of sorghum silage in California." American Dairy Science Association Proceedings 2019
• Angeles, Jorge; Clark, N., et al.; Hutmacher, Robert; Angermann, Till (2019). "ABSTRACT: Soil and Tissue N Cycling in Corn-Wheat Silage Rotation on Manured Soil." 2019 CA Plant and Soil Conference Proceedings 2019
• Roberts, Philip A.; Huynh, Bao Lam, et al.; Clark, N.; Matthews, W. C.; Light, Sarah; Long, R. F. (2019). "Blackeye Varietal Improvement - 2019 Progress Report." California Dry Bean Advisory Board Research Progress Reports
• Dahlke, Helen; Clark, Nicholas, et al.; Putnam, Daniel (2019). Experiments with Flooding Tolerance of Alfalfa for Groundwater Recharge. 2019 Western Alfalfa and Forage Symposium Proceedings.
• Clark, N.; Haviland, David, et al.; Marsh, Brian; Dahlberg, Jeffery (2019). "Management of Sugarcane Aphid in CA Forage Sorghum." 2019 CA Plant and Soil Conference Proceedings
• Long, R. F.; Bonilla, Jasmin Ramirez, et al.; Rethwisch, Michael; Clark, N.; Putnam, D. H.; Grettenberger, Ian (2019). Managing alfalfa weevils in California in the 21st century. Western Alfalfa and Forage Symposium Proceedings, Reno, NV.
• Clark, N. (2019). "Nutrient Management of Forage Crops." 2019 CA Plant and Soil Conference Proceedings
• Hutmacher, Robert; Clark, Nicholas, et al.; Wright, Steven; Angeles, Jorge; Solorio, Rafael (2019). Response of Sorghum and Corn Cultivars to Different Sub-Surface Drip and Nitrogen Fertilizer Applications. 2019 CA-ASA Plant and Soil Conference Proceedings.
• Clark, Nicholas (2019). Starting out Right with this Year's Irrigated Double Crop of Small Grains Forage. California Dairy Newsletter. UC ANR. 11:4.
• Clark, N.; Haviland, David, et al.; Dahlberg, Jeffery; Marsh, Brian; Rill, Stephanie; Angeles, Jorge (2019). "The Effects of Flupyradifuron Application Method on Sugarcane Aphid Forage Sorghhum, 2018." Arthropod Management Tests 44(1)
• Haviland, David; Clark, N., et al.; Dahlberg, Jeffery; Marsh, Brian; Rill, Stephanie (2019). "The Effects of Insecticide Treatments on Sugarcane Aphid in Forage Sorghum in California, 2018." Arthropod Management Tests 44(1)
• Clark, N. (2018). 2017 Tulare County Blackeye Cowpea Strip Trial. Field Crops and Nutrient Notes.N. Clark. Regents of the University of California.
• Hollingsworth, Joy; Dahlberg, Jeffery, et al.; Hutmacher, Robert; Putnam, D. H.; Clark, N.; Bachie, Oli; Sievert, Julie; De Ben, Chris; Solorio, Rafael; Holder, Brady (2018). 2018 Field Reseach on Sorghum Grain Hybrids for California.J. Dahlberg. UC ANR.
• Heguy, J.; Meyer, D., et al.; Clark, N.; Martins, J. P. (2018). "ABSTRACT: Nutrient composition and fermentation characteristics of sorghum preserved as silage in California." 2018 ADSA Annual Meeting Proceedings
• Angeles, Jorge; Clark, N., et al.; Hutmacher, Robert (2018). "ABSTRACT: Plant Macronutrient Fertility and Removal in San Joaquin Valley Corn and Wheat." 2018 CA Dairy Sustainability Summit
• Roberts, Philip A.; Huynh, Bao Lam, et al.; Clark, N.; Matthews, W. C.; Frate, Carol (2018). "Blackeye Report 2018." California Dry Bean Advisory Board Research Progress Reports
• Clark, N.; Heguy, J. (2018). Considerations for a Successful Sorghum Silage Crop. California Dairy Newsletter.J. Heguy and N. Silva-del-Rio.
• Dahlberg, Jeffery; Hutmacher, Robert, et al.; Putnam, D. H.; George, Nicolas; Clark, N.; Heguy, J.; Meyer, D.; Robinson, P.; Hollingsworth, Joy; Sievert, Julie; De Ben, Chris; Solorio, Rafael (2018). Final Report: 2018 Field Demonstrations of Sorghum Forages for the California Dairy Industry.J. Dahlberg. UC ANR.
• Clark, N.; Haviland, David, et al.; Dahlberg, Jeffery; Marsh, Brian; Hutmacher, Robert; Heguy, J.; Rill, Stephanie; Angeles, Jorge (2018). Forage Sorghu: Sorghum bicolor (L.) Monench 'SiloMilo'. The Effects of Flupyradifuron Application Method on Sugarcane Aphid, Yield and Feed Quality of Forage Sorghum in California, 2018.J. Dahlberg. UC ANR.
• Putnam, D. H.; Clark, N., et al.; Geisseler, D. (2018). "Management of Phosphorus and Potassium Fertilization in Alfalfa." 2018 California Plant and Soil Conference Proceedings
• Long, Rachael; Bonilla, Jasmin Ramirez, et al.; Wilson, Robert; Rethwisch, Michael; Clark, N.; Putnam, D. H.; Grettenberger, Ian (2018). "Managing Weevils in Alfalfa Hay." 2018 CA Alfalfa and Forage Symposium Proceedings
• Light, Sarah E.; Leinfelder-Miles, Michelle, et al.; Long, Rachael; Clark, N.; Stewart, Donald; Sumner, Daniel (2018). Sample Costs to Produce Garbanzo Beans in the Sacramento Valley and the Northern San Joaquin Valley. University of California Cost of Production Studies.D. Sumner. University of California Cost of Production Studies.
• Clark, N.; Light, Sarah E., et al.; Leinfelder-Miles, Michelle; Long, Rachael; Stewart, Donald; Sumner, Daniel (2018). Sample Costs to Produce Garbanzo Beans in the Southern San Joaquin Valley. University of California Cost of Production Studies.D. Sumner. University of California Agricultural and Natural Resources.
• Long, D. L.; Grettenberger, Ian, et al.; Putnam, D. H.; Dahlberg, Jeffery; Clark, N. (2018). Sugarcane Aphid - an Unwelcome Visitor to California's Central Valley. Alfalfa and Forage News.D. Putnam. UC ANR. October 5, 2018.
• Long, Rachael; Grettenberger, Ian, et al.; Putnam, D. H.; Dahlberg, Jeffery; Clark, N. (2018). Sugarcane Aphid - an Unwelcome Visitor to California's Central Valley. Alfalfa and Forage News.D. Putnam. Regents of the University of California.
• Clark, N.; Haviland, David, et al.; Marsh, Brian; Dahlberg, Jeffery (2018). Sugarcane Aphid of Sorghum - Insecticide Efficacy. Field Crops and Nutrient Notes.N. Clark. Regents of the University of California.
• Clark, N.; Haviland, David, et al.; Dahlberg, Jeffery; Marsh, Brian; Rill, Stephanie (2018). The Effects of Insecticide Treatments on Sugarcane Aphid, Yield and Feed Quality of Forage Sorghum in California, 2018.J. Dahlberg. UC ANR.
• Clark, N. (2017). 2016 Tulare County Blackeye Cowpea Strip Trials. Field Crops and Nutrient Notes.N. Clark. Regents of the University of California.
• Dahlberg, Jeffery; Hutmacher, Robert, et al.; Putnam, D. H.; Clark, N.; Heguy, J.; Meyer, D.; Robinson, P.; Hollingsworth, Joy; Sievert, Julie; de Ben, Chris; Solorio, Rafael (2017). 2017 Field Research on Sorghum Forages for the California Dairy Industry.J. Dahlberg. University of California Agricultural and Natural Resources.
• Clark, N. (2017). Be on the Lookout for Sugarcane Aphid This Summer. Field Crops and Nutrient Notes.N. Clark. Regents of the University of California.
• Clark, N. (2017). Blackeye Cowpea Strip Trials. Vegetables West Grower & PCA Magazine. California, Malcom Media.
• Roberts, Philip A.; Huynh, Bao Lam, et al.; Clark, N.; Matthews, W. C.; Frate, Carol (2017). "Blackeye Varietal Improvement - 2017 Progress Report." California Dry Bean Advisory Board Research Progress Reports
• Lundy, Mark; Clark, N., et al.; Mathesius, Konrad; George, Nicolas (2017). California Small Grain Disease Notes from the Field. UC Small Grains Blog.M. Lundy. California, Regents of the University of California. April 10, 2017.
• Long, D. L.; Getts, Thomas, et al.; Goding, Kevin; Stevens, Nicole; Clark, N.; Putnam, D. H.; Mostafa, Ayman (2017). "Controlling Alfalfa Weevil Efficacy, Thresholds, and Future Needs." 2017 Western Alfalfa and Forage Symposium Proceedings
• Clark, N.; Orloff, S. B., et al.; Ottman, Mike (2017). Fertilizing High Yielding Alfalfa in California and Arizona. Better Crops with Plant Food. Peachtree Corners, GA, International Plant Nutrition Institute. 2017:4, 3.
• Parry, Sarah R.; Clark, Nicholas E., et al.; Padilla, Eduardo; Giron, Isaac; Hanson, Brad; Shrestha, Anil; Wright, Steven D. (2017). Glyphosate-resistant junglerice control in corn. 2017 Research Progress Report.T. Rauch. Western Society of Weed Science.
• Sarah R. Parry; Nicholas E. Clark, et al.; Eduardo Padilla; Isaac Giron; Kevin R. Day; Brad Hanson; Anil Shrestha; Steven D. Wright (2017). Postemergent weed control in walnuts within weeds of different maturity levels. 2017 Research Progress Report.. Traci Rauch. Western Society of Weed Science.
• Sarah R. Parry; Nicholas E. Clark, et al.; Eduardo Padilla; Isaac Giron; Brad Hanson; Anil Shrestha; Steven D. Wright (2017). Preemergent control of junglerice and Palmer amaranth. 2017 Research Progress Report.. Traci Rauch. Western Society of Weed Science.
• Sarah R. Parry; Nicholas E. Clark, et al.; Eduardo Padilla; Isaac Giron; Walter Martinez; Brad Hanson; Steven D. Wright; Anil Shrestha (2017). Preemergent control of junglerice and Palmer amaranth in a greenhouse. 2017 Research Progress Report.. Traci Rauch. Western Society of Weed Science.
• Clark, N.; Dahlberg, Jeffery (2017). Sugarcane Aphid a New Pest in California Sorghum. California Dairy Newsletter.J. Heguy and N. Silva-del-Rio. January.

• Lundy, Mark; Orloff, S. B., et al. (2017). Topdress of nitrogen at tillering stage is something to seriously consider over the coming weeks. UC Small Grains Blog. Mark Lundy. California, Regents of the University of California. January 27, 2017. 

• Clark, N. (2016). 2015 Annual Western Alfalfa & Forage Symposium - Reno, NV: Three take-home messages for those who couldn't attend. Field Crops and Nutrient Notes.N. Clark. Regents of the University of California.
• Dahlberg, Jeffery; Hutmacher, Robert, et al.; Wright, Steve; Putnam, D. H.; George, Nicolas; Clark, N.; Heguy, J.; Meyer, D.; Robinson, P.; Hollingsworth, Joy; Sievert, Julie (2016). 2016 Field Research on Sorghum Forages for the California Dairy Industry.J. Dahlberg. University of California Agricultural and Natural Resources.
• Nicholas E. Clark; Robert Hutmacher, et al.; Steve Wright; Steve Orloff; TariLee Frigulti; Mark Lundy (2016). ABSTRACT: The effects of rate and application timing of urea fertilizer on yield and grain protein between wheat varieties and residual soil nitrate in the San Joaquin Valley. 2016 California Plant and Soil Conference.. Richard Smith. Visalia, CA, American Society of Agronomy California Chapter. February 2 & 3, 2016.
• Roberts, Philip A.; Huynh, Bao Lam, et al.; Clark, N.; Matthews, C.; Frate, Carol (2016). Blackeye Varietal Improvement - 2016 Progress Report. California Dry Bean Advisory Board Research Progress Reports.
• Clark, N.; Goodell, Pete, et al.; Godfrey, Larry (2016). Flea Beetles a Possible Nuisance in San Joaquin Valley Small Grains near Sorghum. Agronomy News.D. Putnam. California, Regents of the University of California.
• Putnam, D. H.; Clark, N., et al.; Bachie, Oli (2016). "Forage Road Trip - April 12, 2016." Hay and Forage Grower
• Clark, N. (2016). "Forage Road Trip - July 26, 2016." Hay and Forage Grower
• Clark, N. (2016). "Forage Road Trip - June 21, 2016." Hay and Forage Grower
• Clark, N. (2016). "Forage Road Trip - May 17, 2016." Hay and Forage Grower
• Clark, N. (2016). "Forage Road Trip August 30, 2016." Hay and Forage Grower
• Clark, N. (2016). Growing and Harvesting Corn in Water Limiting and Nitrogen Monitoring Times. Field Crops and Nutrient Notes.N. Clark. Regents of the University of California. July 12, 2016.
• Clark, N.; Wright, Steve (2016). Milk Your Water for All the Corn It's Worth. Field Crops and Nutrient Notes.N. Clark. Regents of the University of California.
• Frigulti, TariLee; Clark, Nicholas E., et al.; Ulloa, Mauricio; Hutmacher, Robert; Wright, Steven D.; Keeley, Mark; Roberts, Philip A.; Nichols, Robert L. (2016). Recurrent selection performance for FOV race 4 in selected germplasm progeny. Beltwide Cotton Conferences. New Orleans, Louisiana, National Cotton Council of America.
• Clark, N.; Frate, Carol, et al.; Sumner, Daniel; Klonsky, Karen; Stewart, Donald; Gutierrez, Christine (2016). Sample Costs to Establish and Produce Alfalfa: Tulare County, Southern San Joaquin Valley 300 Acre Planting. University of California Cost of Production Studies.D. Sumner. University of California Agricultural and Natural Resources.
• Clark, N.; Frate, Carol, et al.; Sumner, Daniel; Klonsky, Karen; Stewart, Donald; Gutierrez, Christine (2016). Sample Costs to Establish and Produce Alfalfa: Tulare County, Southern San Joaquin Valley 50 Acre Planting. University of California Cost of Production Studies.D. Sumner. University of California Agricultural and Natural Resources.
• Clark, N.; Wright, Steve (2016). Spring Water and Nutrient Management in Dairy Corn. California Dairy Newsletter.J. Heguy and N. Silva-del-Rio. April.
• Clark, Nicholas E.; Frigulti, TariLee, et al.; Ulloa, Mauricio; Hutmacher, Robert; Wright, Steven D.; Keeley, Mark; Nichols, Robert (2016). The use of disease severity variables in predicting efficacy of FOV4 resistance selection. Beltwide Cotton Conferences. New Orleans, Louisiana, National Cotton Council of America.
• Wright, Steve; Lundy, Mark, et al.; Martins, J. P.; Mayo, Phil; Prato, Diane; Parry, Sarah; Frigulti, T.; Clark, N.; Padilla, Eddie; Giron, Isaac; Martinez, Walter (2016). Tulare/Kings/Fresno Small Grain Variety Performance Tials. Small Grains News.S. Wright. Regents of the University of California.
• Wright, Steve; Dubcovsky, Jorge, et al.; Jackson, Lee; Mayo, Phil; Prato, Diane; Parry, Sarah; Clark, Nick; Padilla, Eddie; Giron, Isaac; Martinez, Walter (2015). Fresno County Small Grain Variety Performance Trials. Small Grain News: Tulare County.S. Wright. University of California Cooperative Extension. 11:2, 1-6. September 2015.
• Wright, Steve; Clark, Nick, et al.; Parry, Sarah; Martinez, Walter; Taylor, Bill; Frigulti, TariLee; Padilla, Eduardo; Giron, Isaac (2015). Small Grain Silage Variety Trial 2015. Small Grain News: Tulare County.S. Wright. University of California Cooperative Extension. 7.
• Frigulti, T.; Clark, N. E., et al.; Chen, J; Bushoven, J. (2014). Haplotypes of 'Candidatus Liberibacter solanacearum' in California. California Plant and Soil Conference.R. Smith. Visalia, CA, American Society of Agronomy.
• Clark, N. E.; Frigulti, T., et al.; Zheng, Z.; Wallis, C.; Bushoven, J.; Chen, J (2014). In Planta Enrichment of 'Candidatus Liberibacter solanacearum' and Exploring Endophytic Population Dynamics through Pyrosequencing Analyses. California Plant and Soil Conference.R. Smith. Visalia, CA, American Society of Agronomy.
• Frigulti, T.; Zheng, Z., et al.; Clark, N.; Wallis, C.; Keremane, M.; Bushoven, J.; Chen, J (2014). In Planta Maintenance, Enrichment, and Whole Genome Sequence Analyses of 'Candidatus Liberibacter solanacearum' Strain R1 from California. 2014 Zebra Chip Annual Reporting Session Proceedings. Specialty Crops Research Institute.
• Clark, N.; Frigulti, T., et al.; Bushoven, J.; Zheng, Z.; Wallis, C.; M., C.; Chen, J (2014). "Pyrosequencing analyses of endophytic bacterial populations in tomato leaves infected by 'Candidatus Liberibacter solanacearum'." American Phytopathological Society Abstracts 104(S3)

ANR Workgroup Associations

• Grain Legume - Chair
• Alfalfa and Forage Systems - Member
• Dairy Quality Assurance - Member
• Entomology - Member
• Native American Community Partnerships - Member
• Small Grain - Member
• Weed - Member

Return to Our Mission