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Jonathan Ojeda

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Jonathan Ojeda

Junior Research Fellow

Room 301 , Life Sciences Building

0417565610 (phone)

Jonathan.Ojeda@utas.edu.au

Jonathan (Jon) is a Junior Research Fellow within the Agricultural Systems Centre of the Tasmanian Institute of Agriculture (TIA). His research is focused on improving the productivity and sustainability of cropping systems based on eco-physiological aspects using biophysical crop models. Currently, Jon's work seeks to quantify environmental impacts on irrigated farming systems under global climate change.

Biography

In 2011, Jon obtained his degree of Agricultural Engineer at the National University of Entre Rios (Argentina), where he was Graduate Teaching Assistant of Forage Crop Ecophysiology and developed full undergraduate and postgraduate programs. As an APSIM trainee in 2013, he was a visiting scholar at the University of Tasmania, TIA and at the Dairy group of The University of Sydney in Camden. Jon then obtained a Fulbright scholarship awarded by the US government to complete his PhD project at Purdue University (USA) calibrating and validating APSIM to simulate crop productivity and water drainage in different agro-ecosystems. In 2017, as a PhD scholar at the National Research Council of Argentina (CONICET), Jon obtained his PhD in Agricultural Sciences at the University of Mar del Plata (Argentina). After that, he was granted with a CONICET post-doctoral position at the National Institute of Agriculture of Argentina (INTA) to develop a research program in forage cropping systems and crop modelling.

Find out more about Jon on Mendeley. Find out which articles Jon has reviewed on Publons.

Career summary

Qualifications

PhD Agricultural Sciences, Precipitation use efficiency in annual forage crop sequences and perennial pastures, National University of Mar del Plata, Argentina, March 2017

Bachelor of Agricultural Engineering, Response to plant population density in different sunflower hybrids, National University of Entre Rios, Argentina, March 2011

Languages (other than English)

Spanish

View more on Dr Jonathan Ojeda in WARP

Expertise

  • Agricultural Systems Analysis and Modelling
  • Farming Systems Research
  • Biophysical Systems Modelling
  • Agricultural Production Systems Simulation
  • Environmental Resource Use
  • Sustainable Agricultural Development
  • Agronomy
  • Agro-ecosystem Function and Prediction
  • Crop and Pasture Biochemistry and Physiology
  • Agricultural Land Management
  • Ecological Impacts of Climate Change
  • Agriculture, Land and Farm Management
  • Crop and Pasture Production
  • Plant Biology
  • Environmental Management
  • Farm Management, Rural Management and Agribusiness
  • Agricultural Spatial Analysis and Modelling
  • Crop and Pasture Nutrition
  • Soil Physics
  • Animal Production

Research Themes

Jon's field of expertise is in agricultural systems, including the influence of farming systems management on crop productivity and environmental resource use efficiency. His research interests include a whole-modelling approach to quantifying environmental impacts on irrigated farming systems under global climate change. Jon’s research into environmental resource use and farming system modelling using Agricultural Production Systems Simulator (APSIM) has spread to working nationally (The University of Sydney and University of Southern Queensland) and internationally (Purdue University and National Research Council of Argentina). Collaborating with multi-disciplinary and culturally diverse research teams, he collected large climate, soil and crops datasets from numerous Argentinian, Australian, and US geographical regions to calibrate and validate APSIM in order to analyse the possible effect of climate events on crop productivity. Moreover, Jon carried out the quantitative analysis of several datasets, using contrasting environments (e.g. dry, wet, cool, tropical, temperate), crop rotations (e.g. cereals, legumes, pastures), and different management strategies (e.g. genotypes, plant density, sowing dates).

Jon has honed his modelling skills to predict the spatio-temporal variations of yield and water productivity of several forage cropping systems across the Argentinian Pampas and the south-eastern of Australia. In the course of his US research collaboration, he carried-out two modelling projects. First, Jon altered two existing APSIM sub-models (lucerne, sugarcane) using knowledge of species-specific differences in growth, development and agronomic practices in order to accurately predict growth and yield of the most important perennial pastures for bioenergy feedstock in the US (switchgrass and Miscanthus). Second, he used an eco-hydrological approach to study the soil-crop interactions to predict tile drainage in continuous maize and maize-soybean rotations using data from the Eastern cornbelt of the US, one of the major agro-ecosystems for maize production in the world.

Collaboration

Jon is currently involved in three projects, which are primarily aimed at developing a tool for decision support regarding dual-purpose crops, increasing the profitability of intensive grazing farms in NSW, and potential impacts of climate change on potato productivity in contrasting environments using APSIM. In addition, Jon is submitting new proposal in order to quantify environmental impacts on irrigated farming systems under global climate change. This collaborative project involve partnership between several universities and industries across Australia, USA and Argentina.

Awards

2017-2019 Postdoctoral Research Fellowship, Research Council of Argentina, CONICET

2015 FULBRIGHT Fellowship, Fulbright Commission, Argentinian International Program of Scholarships in Science and Technology (BEC.AR) (~$27,840 USD)

2013 Fund INNOVA-T Grant, Research Council of Argentina, CONICET (~$860 USD)

2012-2017 Postgraduate Research Fellowship, Research Council of Argentina, CONICET

2004-11 National Scholarship, National College Scholarship Program, Argentina Ministry of Education

Current projects

Developing a tool for decision support regarding dual-purpose crops

Increasing the profitability of intensive grazing farms in NSW: More efficient optimisation of pasture yields through greater decision-making capability

Potential impacts of climate change on potato productivity in contrasting environments using APSIM

Fields of Research

  • Agricultural Systems Analysis and Modelling (070105)
  • Crop and Pasture Biomass and Bioproducts (070304)
  • Agricultural Spatial Analysis and Modelling (070104)
  • Animal Production (070299)
  • Agricultural Land Management (070101)
  • Farming Systems Research (070107)
  • Sustainable Agricultural Development (070108)
  • Natural Resource Management (050209)
  • Crop and Pasture Production (070399)
  • Agronomy (070302)

Research Objectives

  • Pasture, Browse and Fodder Crops (830499)
  • Industrial Crops (820399)
  • Environmentally Sustainable Plant Production (829899)
  • Lucerne (830402)
  • Wheat (820507)
  • Climate Change Models (960303)
  • Farmland, Arable Cropland and Permanent Cropland Soils (961402)
  • Farmland, Arable Cropland and Permanent Cropland Land Management (960904)
  • Winter Grains and Oilseeds (820599)
  • Summer Grains and Oilseeds (820499)
  • Vegetables (820215)
  • Farmland, Arable Cropland and Permanent Cropland Water Management (960905)
  • Rural Water Policy (960706)

Publications

In less than five years, I have completed my PhD dissertation, presented at twelve conferences, published two industry articles, and five papers in high-impact scientific journals, with two additional articles under review. In addition, the APSIM Initiative (CSIRO, the State of Queensland and The University of Queensland, AgResearch, the University of Southern Queensland) has noted with interest my modelling development carried-out in the USA. In this sense, a multi-disciplinary scientific team reviewed and accepted it for inclusion into the model as an example in order to benefit the broader user community and ensure that this new advance will be captured within the APSIM modelling framework.

Total publications

26

Journal Article

(8 outputs)
YearCitationAltmetrics
2019Ojeda JJ, Rezaei EE, Remenyi TA, Webb MA, Webber HA, et al., 'Effects of soil- and climate data aggregation on simulated potato yield and irrigation water requirement', The Science of The Total Environment Article 135589. ISSN 0048-9697 (2019) [Refereed Article]

DOI: 10.1016/j.scitotenv.2019.135589 [eCite] [Details]

Co-authors: Remenyi TA; Harris RMB; Mohammed CL; Meinke H

Tweet

2018Ojeda JJ, Caviglia OP, Agnusdei MG, 'Vertical distribution of root biomass and soil carbon stocks in forage cropping systems', Plant and Soil, 423, (1-2) pp. 175-191. ISSN 0032-079X (2018) [Refereed Article]

DOI: 10.1007/s11104-017-3502-8 [eCite] [Details]

Citations: Scopus - 8Web of Science - 6

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2018Ojeda JJ, Caviglia OP, Agnusdei MG, Errecart PM, 'Forage yield, water- and solar radiation-productivities of perennial pastures and annual crops sequences in the south-eastern Pampas of Argentina', Field Crops Research, 221 pp. 19-31. ISSN 0378-4290 (2018) [Refereed Article]

DOI: 10.1016/j.fcr.2018.02.010 [eCite] [Details]

Citations: Scopus - 7Web of Science - 5

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2018Ojeda JJ, Caviglia OP, Irisarri JGN, Agnusdei MG, 'Modelling inter-annual veriation in dry matter yield and precipitation use efficiency of prennial pastures and annual forge crops sequences', Agricultural and Forest Meteorology, 259 pp. 1-10. ISSN 0168-1923 (2018) [Refereed Article]

DOI: 10.1016/j.agrformet.2018.04.014 [eCite] [Details]

Citations: Scopus - 7Web of Science - 6

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2018Ojeda JJ, Pembleton KG, Caviglia OP, Islam MR, Agnusgei MG, et al., 'Modelling forage yield and water productivity of continuous crop sequences in the Argentinian Pampas', European Journal of Agronomy, 92 pp. 84-96. ISSN 1161-0301 (2018) [Refereed Article]

DOI: 10.1016/j.eja.2017.10.004 [eCite] [Details]

Citations: Scopus - 8Web of Science - 8

Tweet

2018Ojeda JJ, Volences JJ, Brouder SM, Caviglia OP, Agnusdei MG, 'Modelling stover and grain yields, and subsurface artificial drainage from long-term corn rotations using APSIM', Agricultural Water Management, (195) pp. 154-171. ISSN 0378-3774 (2018) [Refereed Article]

DOI: 10.1016/j.agwat.2017.10.010 [eCite] [Details]

Citations: Scopus - 4Web of Science - 4

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2017Ojeda JJ, Volenec JJ, Brouder SM, Caviglia OP, Ahnusdei MG, 'Evaluation of agricultural production systems simulator as yield predictor of Panicum virgatum and Miscanthus x giganteus in several US environments', Global Change Biology Bioenergy, 9 pp. 796-816. ISSN 1757-1693 (2017) [Refereed Article]

DOI: 10.1111/gcbb.12384 [eCite] [Details]

Citations: Scopus - 12Web of Science - 9

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2016Ojeda JJ, Pembleton KG, Islam MR, Agnusdei MG, Garcia SC, 'Evaluation of the agricultural production systems simulator simulating Lucerne and annual ryegrass dry matter yield in the Argentine Pampas and south-eastern Australia', Agricultural Systems, 143 pp. 61-75. ISSN 0308-521X (2016) [Refereed Article]

DOI: 10.1016/j.agsy.2015.12.005 [eCite] [Details]

Citations: Scopus - 11

Co-authors: Pembleton KG

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Conference Publication

(15 outputs)
YearCitationAltmetrics
2020Chapagain R, Ojeda J, Mohammed C, Brown J, Remenyi T, et al., 'Historical and current approaches to decompose uncertainty in crop model predictions', iCROPM2020 Book of Abstracts, 3-5 February 2020, Montpellier, France, pp. 555-556. (2020) [Conference Extract]

[eCite] [Details]

Co-authors: Mohammed C; Remenyi T; Harris R

2020Ojeda J, Rezaei EE, Remenyi T, Webb M, Webber H, et al., 'Multi-resolution analysis of aggregated spatial data to simulate yield and irrigation water demand at regional scales', iCROPM2020 Book of Abstracts, 3-5 February 2020, Montpellier, France, pp. 195-196. (2020) [Conference Extract]

[eCite] [Details]

Co-authors: Remenyi T; Harris R; Mohammed C; Meinke H

2018Jauregui JM, Ojeda JJ, 'Yield gap analysis of lucerne (Medicago sativa L.) in the Argentinian Pampas', Proceedings of the Second World Alfalfa Congress, 11-14 November 2018, Cordoba, Argentina, pp. 193-193. (2018) [Conference Extract]

[eCite] [Details]

2017Ojeda JJ, Caviglia OP, Agnusdei MG, Errecart PM, 'Water and solar radiation-productivity in no-till forage cropping systems in the south-east pampas of Argentina', Proceedings from the World Congress on Conservation Agriculture, 1-4 August 2017, Rosary, Argentina, pp. 192. (2017) [Conference Extract]

[eCite] [Details]

2017Ojeda JJ, Mistrorigo D, Nievas LA, 'Evaluacion del rendimiento de materia seca de raigras anual (Lolium multiflorum Lam.) de resiembra natural sobre soja para grano bajo distintas dosis de nitrogeno', Proceedings from the World Congress on Conservation Agriculture, 1-4 August 2017, Rosary, Argentina ISSN 2527-2055 (2017) [Conference Extract]

[eCite] [Details]

2017Ojeda JJ, Pembleton KG, Caviglia OP, Islam MR, Agnusdei MG, et al., 'Sustainable intensification of forage crop sequences in the Argentinean pampas: dry matter production and water productivity', Proceedings from the World Congress on Conservation Agriculture, 1-4 August 2017, Rosary, Argentina, pp. 183. ISSN 2527-2055 (2017) [Conference Extract]

[eCite] [Details]

2015Jauregui JM, Ojeda JJ, Baudracco J, Maiztegui J, Dimundo C, et al., 'Calibrating APSIM model to evaluate dryland potential production of Lucerne in NW Santa Fe', Revista Argentina de Produccion Animal, pp. 126-126. ISSN 0326-0550 (2015) [Conference Extract]

[eCite] [Details]

2015Jauregui JM, Ojeda JJ, Baudracco J, Maiztegui J, Dimundo C, et al., 'Using APSIM to estimate maize potential yield in NW Santa Fe: early and late sow', Revista Argentina de Produccion Animal, pp. 127-127. ISSN 0326-0550 (2015) [Conference Extract]

[eCite] [Details]

2015Jauregui JM, Ojeda JJ, Baudracco J, Maiztegui J, Dimundo C, et al., 'Prediction of sorghum potential yield with variable sowing dates in NW Santa Fe', Revista Argentina de Produccion Animal, pp. 128-128. ISSN 0326-0550 (2015) [Conference Extract]

[eCite] [Details]

2015Ojeda JJ, Aello MS, Caviglia OP, y Agnusdei MG, 'Productive and nutritional evaluation of maize-soybean intercropping for silage', Revista Argentina de Produccion Animal, pp. 159-159. ISSN 0326-0550 (2015) [Conference Extract]

[eCite] [Details]

2015Ojeda JJ, Caviglia OP, Agnusdei MG, Eriksen GE, y Marino MA, 'Comparative analysis of water productivity between 'Tall fescue' (Festuca arundinacea Schreb.) and 'Oats' (Avena sativa L.)', Revista Argentina de Produccion Animal, pp. 158-158. ISSN 0326-0550 (2015) [Conference Extract]

[eCite] [Details]

2015Ojeda JJ, Pembleton KG, Islam MR, Garcia SC, Caviglia OP, et al., 'Evaluation of APSIM for lucerne dry matter yield prediction in the Argentine Pampas', Revista Argentina de Produccion Animal, pp. 156-156. ISSN 0326-0550 (2015) [Conference Extract]

[eCite] [Details]

2013Bertin OD, Castano JA, Maekawa M, Ojeda JJ, Sardina MC, et al., 'Effects of slurry application on summer annual grasses germination', Revista Argentina de Produccion Animal, pp. 228-228. ISSN 0326-0550 (2013) [Conference Extract]

[eCite] [Details]

2013Girard R, Eclesia RP, Ojeda JJ, 'Cultivos de cobertura forrajeros: efecto sobre el stock y la formacion de C y su asociacion con la produccion de raices', pp. 1-1. (2013) [Conference Extract]

[eCite] [Details]

2012Velentinuz O, Coll L, Ojeda J, 'Hybrid maturity and plant population density to improve sunflower performance in Entre Rios, Argentina', Proceeding from the 18th International Sunflower Conference, 27 February - March 1, Mer del Plata, Argentian, pp. 203-207. (2012) [Refereed Conference Paper]

[eCite] [Details]

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Contract Report, Consultant's Report

(2 outputs)
YearCitationAltmetrics
2018Hinton S, Harrison MT, Pengilley G, Phelan DC, Hardie MA, et al., 'Water for Profit', Department of Primary Industries, Parks, Water and Environment, Australia, Final project report (2018) [Contract Report]

[eCite] [Details]

Co-authors: Hinton S; Harrison MT; Pengilley G; Phelan DC; Hardie MA; Mohammed CL

2018Hinton SJ, Harrison MT, Pengilley G, Phelan DC, Hardie MA, et al., 'Water for Profit', Department of Primary Industries, Parks, Water and Environment, Australia, June 2018 (2018) [Contract Report]

[eCite] [Details]

Co-authors: Hinton SJ; Harrison MT; Pengilley G; Phelan DC; Hardie MA; Mohammed CL

Thesis

(1 outputs)
YearCitationAltmetrics
2017Ojeda JJ, 'Eficiencia de uso de la precipitacion en secuencias de cultivos forrajeros anuales y pasturas perennes' (2017) [PhD]

[eCite] [Details]

Grants & Funding

Funding Summary

Number of grants

4

Total funding

$809,826

Projects

Crop-livestock adaptation to climate change based on modelling and remote-sensing (2020)$49,957
Description
We aim to assess how crop-livestock management practices impact farm performance regionally under different climate change scenarios. We will couple existing model-scaling and remote-sensing techniques developed in Argentina (summarized through the Forage Control Board) with the most advanced biophysical models in the world (APSIM) to assess the drivers of yield variability for diverse forage cropping systems in Argentina, Uruguay and Australia. We will seek to strengthen the skills between the three countries, Australia with systems modelling, Argentina with remote-sensing, and Uruguay with livestock systems analysis from currently running experimental dairy and beef farmlets. The project will be conducted collaboratively with livestock industry decision-makers who will perform exercises to explore alternative futures. This unique capability will facilitate the development of improved forage crop regional management and anticipation of environmental impacts. This collaboration will extend the use of current model and remote-sensing technologies between the three countries.
Funding
Department of Foreign Affairs and Trade ($49,957)
Scheme
Grant-Council on Australia Latin America
Administered By
University of Tasmania
Research Team
Ojeda JJ; Ara I; Aryal J
Year
2020
PhD project: The benefits and limits of diversity in agricultural systems (2019 - 2022)$41,394
Description
The proposed research aims at exploring which type of diversification can provide the benefits discussed above and in which context it can be a solution to sustainable agriculture with the overarching research question being To what extent can the productivity, profitability and sustainability of agricultural systems in Australia and globally benefit from being diverse? The two hypotheses to test and either providence evidence for or reject are:1.Extensive/mixed agroecosystems are higher in diversity and/or more resilient to climate change than highly specialised systems, such as monocultures.2.Increasing agricultural and tree biodiversity within the broader landscape will improve productivity, deliver ecosystem services, and improve rural livelihoods.
Funding
CSIRO-Commonwealth Scientific & Industrial Research Organisation ($41,394)
Scheme
Contract Research
Administered By
University of Tasmania
Research Team
Ojeda JJ; Leith PB; Waha K
Period
2019 - 2022
Towards high water productivity in agriculture based on multi-scale modelling (2019 - 2020)$24,744
Description
This project will investigate how water management impacts crop productivity at a regional scale in Australia. We will apply existing model-scaling techniques and drought risks assessments developed for Europe to diverse Australian agricultural systems.
Funding
Universities Australia / Deutscher Akademischer Austauschdienst (German Academic Exchange Service) ($24,744)
Scheme
Grant
Administered By
University of Tasmania
Research Team
Ojeda JJ
Period
2019 - 2020
Improving the representation of soil productivity/constraints in existing decision support systems and modelling platforms (2018 - 2020)$693,731
Description
The project will develop sub-modules of APSIM and HowLeaky and then transferring these improvements into their derivative DSSs. It will provide enhanced decision support to the agricultural sector for addressing complex soil constraint challenges.
Funding
CRC for High Performance Soils Ltd ($693,731)
Scheme
Grant
Administered By
CRC for High Performance Soils Ltd
Research Team
Ojeda JJ; Mohammed CL
Period
2018 - 2020

Research Supervision

Jon supervised 5 theses in the Argentinian Agricultural Engineering undergraduate program at the National University of Entre Rios (1) and at the National University of Mar del Plata (4). These programsfocused on:

  • Impact of cover  crops with different defoliation levels on soil carbon. UNER (in progress)
  • Comparative analysis of root production and distribution in oats and tall fescue
  • Effects of previous crop, additives and pre-wilted in nutritional quality of oat silage 
  • Comparative analysis of water productivity between oats and tall fescue
  • Nutritional evaluation of silage maize-soybean intercropping.

Jon is actively seeking PhD and Masters of Research students, and welcomes applications from potential students interested in environmental crop physiology and farming systems modelling.

Current

3

Current

DegreeTitleCommenced
PhDEstimating Uncertainty in Agricultural Model Scaling (EUAgMS)2019
PhDThe Benefits and Limits of Diversity in Agricultural Systems2019
PhDQuantifying the Economic and Ecosystem Services of Agriculture: a spatial-statistical approach based on regional soil water flux predictions2020