Patricio Grassini - Professor of Agronomy and Horticulture, and Cropping Systems Specialist

Patricio Grassini

faculty
Work Plant Sciences Hall (PLSH) 387
Lincoln NE 68583-0915
US
Work 402-472-5554 On campus, dial 2-5554
Meeting demand for food, feed, fiber, and fuel in a world with a population of 9.8 billion people by 2050, without negative environmental impact or unsustainable use of natural resources, is one of the greatest scientific challenges of our time. Sustainable crop intensification on existing cropland area is therefore crucial to meet increasing food demand and relieve the pressure on cropland expansion. My research and extension programs focus on narrowing the existing yield gap between potential yields and current farm yields, while improving resource-use efficiency and producer profit and minimizing environmental footprint. In accomplishing the foregoing, my program leverages from expertise on crop modeling, spatial analysis, big data, and hypothesis-driven field experiments to benchmark productivity and environmental footprint of crop systems and to identify opportunities for improving both. My program aligns with the Institute of Agriculture and Natural Resources (IANR) goals relative to address priority issues facing agriculture and food industries in Nebraska and globally, provide the knowledge base essential for managing our natural resources, promote family well-being and community development, and educate future scientists. My research promoting sustainable crop intensification goes beyond Nebraska and USA, including cropping systems in South America, Sub-Saharan Africa, and South-East Asia. A major on-going project is to develop a Global Yield Gap Atlas that provides estimates of gaps between actual and potential yield for major cropping systems. Another major initiative is a four-year project working with smallholder oil palm farmers in Indonesia. I also lead a project on yield corn forecasting that provides real-time estimates of corn yield potential for the entire US Corn Belt region.

icon-academic-capEducation

  • Ph D, University of Nebraska-Lincoln, 2010
  • BS, University of Buenos Aires, 2005

icon-documentPublications and Other Intellectual Contributions

  • Beyond the plot: Technology extrapolation domains for scaling out agronomic science., Environmental Research Letters , April (2nd Quarter/Spring) 2018
  • Fostering a climate-smart intensification for oil palm, NATURE SUSTAINABILITY, April (2nd Quarter/Spring) 2021
  • Sustainable intensification for a larger global rice bowl, NATURE COMMUNICATIONS, December 2021
  • Luck versus Skill: Is Nitrogen Balance in Irrigated Maize Fields Driven by Persistent or Random Factors?, ENVIRONMENTAL SCIENCE & TECHNOLOGY, July (3rd Quarter/Summer) 2021

icon-bookmark-starAwards & Honors

  • Listed in the 2021 List of Highly Cited Researchers (top 1% in the discipline and year in the world), Web of Science Group, 2021
  • W.L. Nelson Award for Diagnosing Yield-Limiting Factors, Agronomy Society of America , 2020
  • American Society of Agronomy (ASA) Early Career Award , Agronomy Society of America, 2016
  • Omtvedt Innovation Award, University of Nebraska-Lincoln, 2021
  • Junior Faculty Excellence in Research, UNL-ARD, 2015
  • Fulbright Scholarship, Fulbright Commission in Argentina, 2007

Faculty Bio

Map indicating how various Nebraska and Kansas sites are expected to vary from average yields.

2017 Corn Yield Forecasts as of September 20

September 21, 2017
Crop modelers wrap up their forecasts of rainfed and irrigated corn yields across the Corn Belt for 2017, noting above-average yields for about 80% of the irrigated sites and more than 60% of the rainfed sites. Irrigated yields ranged from 11%-17% over long-term averages at those sites and rainfed yields at those sites were 13%-40% above average. View data for all the sites.

Read more

Forecast of end-of-season irrigated corn yields in Nebraska and Kansas

2017 Corn Yield Forecasts as of August 30

September 1, 2017
Forecasts for end-of-season corn yields improved across much of the Corn Belt since the early August forecast. View crop stage and yield forecasts as well as weather data. In Nebraska predictions are for near to above average corn yields for most sites, except northeast and northwest sites.

Read more

Maps showing likelihood of yield deviations for rainfed corn at various sites.

2017 Corn Yield Forecasts as of Aug. 9

August 11, 2017
Corn yield forecasts for Nebraska sites indicate near-average to above average yields for most irrigated sites. There was much more yield variability for rainfed locations where three of the sites were forecast with a 50%-100% chance of below-normal yields and three were forecast for normal yields, while one was near average.

Read more

Probability of yield deviation for normal for irrigated corn, model ran July 18, 2017

2017 Corn Yield Forecasts as of July 18

July 19, 2017
Corn growth stages are estimated for 41 sites in 10 states and yields are estimated for select irrigated and rainfed sites, based on the Hybrid-Maize model and input from specialists and educators across a 10-state area as of July 18, 2017. The authors note that these early season yield forecasts vary widely, particularly for rainfed fields, and may change considerably by end of season.

Read more

Locations of 2017 Yield Forecasting Center sites

2017 Corn Yield Forecasts: Approach and Interpretation of Results

July 6, 2017
This article discusses data and data collection for the Yield Forecasting Center forecasts of crop phenology and yield for 2017, including a map of the site locations and specific data on crop management and soil types for each site.

Read more

Chart of Nebraska & US corn yield trends (1971-2016)

Soybean and Corn Yield and Acreage Trends through 2016

May 25, 2017
Nebraska soybean and corn yields steadily increased from 1971 to 2016, in both irrigated and rainfed production fields. Charts based on USDA National Agricultural Statistics Service numbers track these changes.

Read more

Yield Chart for 2016 Corn Yield Forecasts

Hindsight of 2016 Corn Yield Forecasts by the Yield Forecasting Center

May 11, 2017

Here we provide an evaluation of the corn yield forecasts released during the 2016 crop season by the Yield Forecast Center. We compared our end-of-season forecasted yield potential against the average corn yields reported by USDA NASS for rainfed and irrigated production.

Read more

Meat thermometer measuring soil temperature

Corn, Soybean Planting Considerations for this Week’s Cold Snap

April 24, 2017
With nighttime lows predicted to drop several nights this week, growers are advised to cautiously assess the potential for germination problems due to imbibitional chilling before planting. Agronomists advise checking soil temperatures in each field the day of planting as well as forecast temperatures for 24 hours (soybeans) or 48 hours (corn) after planting.

Read more