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
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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

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.

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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.

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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.

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Corn and soybean fields
Nebraska research documents yield increases from using corn-soybean rotations.

Rotation Impact on Irrigated Corn and Soybean Yields in Nebraska

February 23, 2017

On most Nebraska rainfed farms, soybean and corn are usually rotated. On irrigated fields, however, the rotation sequence tends to shift to more years of corn between soybean, and in some cases, corn is grown continuously, year-after-year.

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fertilizer applicator in the field
Nebraska research shows that most NE growers can reduce their normal nitrogen rate in corn following alfalfa by applying the proper N credit. (Photo by Laura Thompson)

Cutting Costs Without Hurting Yields? Check Fertilizer N Rates in Corn after Alfalfa

February 22, 2017

With tight crop margins for the 2017 growing season, many farmers are looking for ways to cut input costs without hurting yields. One way to do this is by giving the appropriate nitrogen credit when calculating how much N to apply to corn grown after a prior alfalfa crop.

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Harvest 2016 — When Corn Yields are Below Expectations

October 14, 2016
A review of 2016 growing conditions across Nebraska sheds light on a number of factors that may have contributed to reduced yield in individual fields. An understanding of these factors may be helpful when selecting seed for 2017.

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Map showing sites of Nebraska soybean fields in study of yield-limiting production factors
Map showing sites of Nebraska soybean fields in study of yield-limiting production factors

Help Us Identify Yield-Limiting Factors in Nebraska Soybean Fields

October 5, 2016
Nebraska soybean producers are being asked to answer a survey about their soybean fields and contribute to a benchmark study of current soybean production in Nebraska. Researchers from 10 north central states, including Nebraska, are collecting the data to identify factors that may be impeding growers from reaching full yield. See what they've learned in the first two years of the study and how they hope to use the information.

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Figure 1. Variation in kernel setting in corn in Iowa. (Photo by Mark Licht)
Figure 1. Variation in kernel setting in corn in Iowa. (Photo by Mark Licht)

Yield Forecast Center Predicts Corn Yields Well Below USDA-NASS Projections

September 22, 2016
End-of-season yield forecasts for irrigated and dryland corn across eight states in the Corn Belt indicate above average yields for 2016, but not the record-breaking yields predicted by USDA in their September forecast. While two states are forecast to have yields below the 10-year average (-1% to -4%), the remaining states showed above average yields ranging from 1% to 21% above the 10-year average.

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