Patricio Grassini - Cropping Systems Specialist

Patricio Grassini

(faculty)
Work Plant Sciences Hall (PLSH) 387
Lincoln NE 68583-0915
US
Work 402-472-5554 On-campus 2-5554

Faculty Bio

Probabilities of yield deviations for rainfed corn production across the Corn Belt.
Probabilities of yield deviations for rainfed corn production across the Corn Belt.

Corn Yield Forecasts as of Sept. 7 September 8, 2016

The Sept. 7 corn yield forecasts show a majority of the irrigated sites expected to produce above normal, but not record-breaking yields. Forecasted yields for rainfed sites are more variable, although most are expected to be near normal. Above average yields are expected for 11 of the 37 sites studied and below-normal yields are forecast for five sites.

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Map of corn yield deviation from long-term averages

Corn Yield Forecasts for Aug. 24, Including State Forecasts August 25, 2016

August 24 corn yield forecasts for 41 sites across the Corn Belt showed many near or above average. At Nebraska rainfed corn sites there is a high probability (>75%) of above-average yield at the North Platte and central east sites and a high probability (>75%) of below-average yield at the southwestern and southeastern Nebraska sites (McCook, Clay Center, and Beatrice). In irrigated corn there was a high probability of near or above average yields for all except the Beatrice site. See the story for data tables and discussion.

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A corn field at mid-grain filling near Atkinson, Nebr. (Photo courtesy of Nicolas Cafaro La Menza and Mariano Hernandez; taken August 10, 2016).
A corn field at mid-grain filling near Atkinson, Nebr. (Photo courtesy of Nicolas Cafaro La Menza and Mariano Hernandez; taken August 10, 2016).

2016 Corn Yield Forecasts as of Aug. 10 August 11, 2016

Simulations of 2016 end-of-season corn yield potential for 41 sites indicate high probability of near or above-average yields in irrigated fields, but much more variability across the Corn Belt for rainfed fields. Several sites in southern and northeast Nebraska and in Iowa show a higher probability of below average yields. The article includes yield forecasts for each site, along with conditions for the period contributing to the forecasts.

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A corn field at early stages of grain filling near Saronville, Nebr.  (Photo by Agustina Diale; taken on July 27, 2016.)
A corn field at early stages of grain filling near Saronville, Nebr. (Photo by Agustina Diale; taken on July 27, 2016.)

2016 Corn Yield Forecasts as of July 27 July 28, 2016

Corn yield forecasts, based on Hybrid-Maize simulations and input from crop experts in 10 states, were developed for 41 sites across the Corn Belt on July 27. For irrigated corn, based on this conditions at this point in the season, there is only a low probability of below average yields. For rainfed corn, the majority of the sites studied, the results are more variable across locations. The article includes yield forecasts for each site, along with conditions for the period contributing to the forecasts.

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Yield probabilities for irrigated corn, July 13, 2016.
Yield probabilities for irrigated corn, July 13, 2016.

2016 Corn Yield Forecasts as of July 13 July 14, 2016

Based on modeling corn growth stage and end-of-season yield for 41 sites in 10 Corn Belt states, researchers are forecasting potential end-of-season yield in "real time" to aid in decision-making thoughout the season. On July 14 they reported that corn has already reached or is approaching silking throughout most of Nebraska and the Corn Belt, except for corn in the northern and eastern states, where growth is running behind the rest of the region.based on modeling end-of-season corn yield for 41 sites. There is a low (<20%) probability of below-average yields at all irrigated locations, except for two sites in southeastern Nebraska. The range of forecast yields at the rainfed sites is wider. There is a relatively high probability (>75%) of above-average yield at two locations in the northern states and below-average yield at three locations. See story for predicted yields and probabilities for all the sites.

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Map of sites for corn yield forecasts for 2016
Map of sites for corn yield forecasts for 2016

2016 Corn Yield Forecasts: Approach and Interpretation of Results June 30, 2016

The Yield Forecasting Center will be providing in-season corn yield forecasts every two weeks starting in mid-July to aid growers and the ag industry in making management, logistics, and marketing decisions through the season. The Center consists of a core team at UNL in collaboration with agronomists and extension educators from universities throughout the Corn Belt.

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Soybean Seeding Rate Tips April 20, 2016

Numerous soybean seeding rate studies have indicated that a final plant population of about 80,000 to 120,000 plants per acre is likely sufficient for ensuring an economic return, with the latter being based on weighing the slightly higher yield potential with higher final pl

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Photos of canopy closure based on various planting dates
Figure 3. Canopy cover in early July for each planting date in a 2015 Nebraska study. Authors note that fields that have closed canopy and are "green to the eye by the 4th of July" make the best use of sunlight to generate top yields.PD = planting date.

Early Bird Gets the Worm: Benefits of Early Soybean Planting April 20, 2016

A 4-Step Early Bird Guide to Higher Soybean Yield Potential:

  • Select full-season varieties with proven yield performance.
  • Know your replant coverage with seed suppliers and insurance.
  • Shoot for soil temperatures above 50°F during the 48 hours after planting.

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