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 showing probability of deviation from normal yields for rainfed sits in Nebraska and Kansas

2019 Corn Yield Forecasts as of September 17

September 19, 2019
Forecasted end-of-season yields for rainfed corn across the Corn Belt indicate above-average yield at two-thirds of the sites, with yields well above historical averages in Nebraska, Kansas, and Missouri. See data for individual irrigated and rainfed sites.

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Map showing likelihood of yield deviation from the long-term average yield potential for irrigated corn sites in Nebraska and Kansas.

2019 Corn Yield Forecasts as of August 21

August 22, 2019
There is a high probability of near- or above-average yields at all but two of the 37 locations studied. Corn has reached dough stage at most locations, except for irrigated corn in western and north-central Nebraska, northern North Dakota and Minnesota, and the eastern fringe of the region (Indiana, Michigan, and Ohio).

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Forecast yield deviations from normal for rainfed corn across the Corn Belt

2019 Corn Yield Forecasts as of July 31

August 2, 2019
This article summarizes the simulated crop stages and yield forecasts performed on July 31 for 37 locations across the US Corn Belt.

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Growth stages of corn at rainfed sites in monitored by Corn Yield Forecast Center

2019 Corn Yield Forecasts as of July 15

July 19, 2019
Corn is still in vegetative stages across much of the Corn Belt. At this point, delayed planting doesn't appear to have affected yields at irrigated sites. Yields for rainfed sites vary considerably, with those on the western edge trending above normal.

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Map of the Corn Belt showing locations for the 2019 Corn Yield Forecasts
Map of the Corn Belt showing locations for the 2019 Corn Yield Forecasts

2019 Corn Yield Forecasts: Approach and Interpretation of Results

July 8, 2019
Agronomists address how the Corn Yield Forecast Center develops yield forecasts, what to expect during the growing season, and how to use the forecasts to inform farm decisions. Tables detailing soil types and crop management for each of the 41 locations are included.

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Figure 1. Distribution of survey fields across the north central US. Red circles denote individual fields and the green area shows the region of soybean acres. (Source: USDA-NASS. (2019) USDA-National Agricultural Statistics Service (NASS), National Cultivated Layer).
Figure 1. Distribution of survey fields across the north central US. Red circles denote individual fields and the green area shows the region of soybean acres. (Source: USDA-NASS. (2019) USDA-National Agricultural Statistics Service (NASS), National Cultivated Layer).

Major Causes of Soybean Yield Gaps in Nebraska and 9 Other States Identified

April 15, 2019
A four year study in Nebraska and other north central states found that planting date was a leading factor explaining the gap between current soybean yield and potential yield. The gap ranged from 11% in irrigated fields in south-central Nebraska to 21% in dryland fields in eastern Nebraska.

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Extension Educator Nathan Mueller and grower Ryan Siefken scout an on-farm soybean research plot in eastern Nebraska. (Photo by Laura Thompson)
Extension Educator Nathan Mueller and grower Ryan Siefken scout an on-farm soybean research plot in eastern Nebraska. (Photo by Laura Thompson)

20 Growers Sought for Soybean Yield Gap Study

February 8, 2019
The Nebraska On-Farm Research Network (NOFRN) is seeking 20 farmers to participate in a study of how to optimize soybean yields. Here's more on the practices being studied and what's needed from the growers and the university researchers.

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Map indicating end-of-season deviations from average corn yields for select sites in the Corn Belt
Map indicating end-of-season deviations from average corn yields for select sites in the Corn Belt

Oct. 16 Corn Yield Forecast - End of Season Report

October 19, 2018
The end-of-season corn yield report finds that high temperatures during vegetative stages had little impact on forecasted yield potential. This is the final article in the series looking at simulated crop stages and yield forecasts for 41 locations across the US Corn Belt.

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