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Melkonian, Jeffrey J
Senior Research Associate
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Positions
- Senior Research Associate, Crop and Soil Sciences (CSS), College of Agriculture and Life Sciences (CALS)
My work involves the application of dynamic simulation modeling combined with field experimentation to better understand resource use, productivity, and the fate of nitrogen and water in agricultural and biomass crops.
Research Areas
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- Extension
- Research
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- Service
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Affiliations
Extension
has primary specialization area
has secondary specialization area
Research
research overview
- The focus of my research is the application of simulation modeling to better understand crop production, and nitrogen and water fluxes in agricultural and environmental systems. Research includes testing alternative strategies for nutrient and water management to reduce negative environmental impacts, increase crop production and provide insight into the complex soil/plant/atmosphere continuum to design more targeted and fruitful experimental strategies.
research activities
co-principal investigator on
- ADAPTIVE NITROGEN MANAGEMENT WITH SILAGE, GRAIN AND SWEET CORN PRODUCTION awarded by NEW YORK FARM VIABILITY INSTITUTE 2009 - 2011
- MOVING ADAPT-N TO ADOPTION - ON-FARM BETA TESTING AND IMPLEMENTATION OF A NEW TOOL FOR PRECISION NITROGEN MANAGEMENT IN CORN awarded by NEW YORK FARM VIABILITY INSTITUTE 2012 - 2013
- NEW TOOLS AND INCENTIVES FOR CARBON, NITROGEN, AND GREENHOUSE GAS ACCOUNTING AND MANAGEMENT IN CORN CROPPING SYSTEMS awarded by NATIONAL INSTITUTE OF FOOD AND AGRICULTURE-USDA 2011 - 2016
- PRECISE NITROGEN MANAGEMENT FOR CORN PRODUCTION: MITIGATING ENVIRONMENTAL NITROGEN AND ADAPTING TO CLIMATE CHANGE awarded by NATURAL RESOURCES CONSERVATION SERVICE, USDA 2010 - 2013
other area(s) of concentration/expertise
- dynamic simulation modeling of plant/soil/atmosphere systems
keywords
- cropping systems
- models
- nitrogen
- water
submitted impact statement
- Understanding the fate of nitrogen in agroecosystems.
- Understanding the fate of nitrogen in agroecosystems.
- Precision nitrogen management for corn production in New York State and the Northeast United States
- Precision Nitrogen Management for corn production in New York State and Northeast US.
- GLOBE - Global Learning to Benefit the Environment: Modeling soil properties to understand thresholds of ecosystem dynamics
Publications
individual publications
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academic article
- A Case Study on the Use of Adapt-N. What's Cropping Up?. 21:16-17. 2011
- Short-term nitrous oxide losses under maize production as affected by soil type, tillage, rotation, and fertilization. Soil and Tillage Research. 102:19-26. 2009
- Single-event nitrous oxide losses under maize production as affected by soil type, tillage, rotation, and fertilization. Soil and Tillage Research. 102:19-26. 2009
- Comparisons of measured stream flow with drainage and runoff simulated by a soil-vegetation-atmosphere transport model parameterized with GLOBE student data. Journal of Hydrology. 333:214-225. 2007
- Evaluation of the PNM model for simulating drain flow nitrate-N concentrations under manure-fertilized maize. Plant and Soil. 282:343-360. 2006
- Effects of elevated carbon dioxide on gas exchange and photochemical and nonphotochemical quenching at low temperature in tobacco plants varying in Rubisco activity. Photosynthesis Research. 83:63-74. 2005
- Chilling responses of maize (Zea mays L.) seedlings: root hydraulic conductance, abscisic acid, and stomatal conductance. Journal of Experimental Botany. 55:1751-1760. 2004
- Gas exchange and co-regulation of photochemical and nonphotochemical quenching in bean during chilling at ambient and elevated carbon dioxide. Photosynthesis Research. 79:71-82. 2004
- Suppression of polyphenol oxidases increases stress tolerance in tomato. Plant Science. 167:693-703. 2004
- Loss of kernel set due to water deficit and shade in maize: Carbohydrate supplies, abscisic acid and cytokinins. Crop Science Journal. 41:1530-1540. 2001
- Simulation of elevated CO2 effects on daily net canopy carbon assimilation and crop yield. Agricultural Systems. 58:87-106. 1998
- Elevated CO2 mitigates chilling-induced water stress and photosynthetic reduction during chilling. Plant, Cell and Environment. 20:625-632. 1997
- Relative sensitivity of leaf elongation and stomatal conductance of cucumber plants to changes in leaf and soil water potentials. Canadian Journal of Plant Science. 75:909-915. 1995
- An evaluation of hydraulic vs. nonhydraulic root signals controlling shoot response to soil water deficits in cucumber. Acta Horticulturae. 335:173-182. 1993
- A model of water flow through plants incorporating shoot/root message control of stomatal conductance. Plant, Cell and Environment. 14:531-544. 1991
- Ozone-water stress interactions. Plant Biology. 12:311-328. 1990
- Determination of the volumetric modulus of elasticity of wheat leaves by pressure-volume relations and the effect of drought conditioning. Crop Science Journal. 22:116-122. 1982
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article
- A Case Study on the Use of Adapt-N 2011
- Adapt-N Tool Helps Farmers Deal with Climate Change, Energy Consumption and Greenhouse Gas Emissions 2010
- Precision Nitrogen Management (PNM) Model: Simulation of nitrogen and water fluxes in the soil-crop-atmosphere continuum in maize (Zea mays L.) production systems 2005
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booksection
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conference paper
- ADAPT-N: A computational tool for precise N management in corn. Proc. of the 41st Annual Extension-Industry Soil Fertility Conference, Des Moines, IA, November 2011. 2011
- Using the Adapt-N Tool for Precise Nitrogen Management on Corn. Proc. 2011 Field Crops Dealer Meetings, Cornell University, Ithaca, New York.. 2011
- Subsurface drainage discharges following manure appilcation: Measurements and model analyses. Proceedings XVIIth World Congress of the International Commission of Agricultural and Biosystems Engineering and 9th International Drainage Symposium, Quebec City, Canada. 2010
- ADAPT-N: Adaptive nitrogen management for maize using high-resolution climate data and model simulations. Proceedings of the 9th International Conference on Precision Agriculture, July 20-23, 2008, Denver, CO. 2008
- ADAPT-N: Adaptive nitrogen management for maize using high-resolution climate data and model simulations. Proceedings of the 9th International Conference on Precision Agriculture. 2008
- Application of Dynamic Simulation Modeling for Nitrogen Management in Maize. Managing Crop Nitrogen for Weather. 14-22. 2007
- Nitrogen Management Under Maize in Humid Regions: Case for a Dynamic Approach. Managing Crop Nitrogen for Weather. 6-13. 2007
- Nitrogen management for maize in humid regions: A case for a dynamic modeling approach. In: "Managing Crop Nitrogen for Weather". 2007
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conference poster
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document part
- An integrative approach to carbon, nitrogen, and greenhouse gas accounting and management in corn production systems. 2012
- New tools and incentives for carbon, nitrogen and greenhouse gas accounting and management in corn production systems. 2012
- Comparison of physiologically based formulations for simulations of “CO2 fertilization.” 1996
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intellectual contribution
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report
- Development of drought indices from a dynamic water balance model 1994
presentations
featured in archived article
Service
outreach overview
- My main extension/outreach focus is on the application of a well-tested/calibrated dynamic simulation model of water and nitrogen in a maize/soil system to develop improved sidedress nitrogen recommendations for maize production in New York State. I am also using dynamic simulation modeling to assess potential site productivity for biomass production (coppiced willow, switchgrass and reed canary grass). I also educate growers/extension staff about the fate of nitrogen in agricultural systems. Finally, I am also working with others to assess new tillage/nitrogen application practices to promote soil health as part of an effort to promote sustainable crop production practices.
service to the profession
reviewer or editor for
Background
education and training
- Ph.D. in, Cornell University 1994
- M.S. in, Cornell University 1983
- B.S. in, Middlebury College 1977
Other
college
- CALS
research keyword
- cropping systems
- models
- nitrogen
- water