Charles Shapiro - Extension Soil Scientist—Crop Nutrition

Charles Shapiro

(faculty)
Work
HAL 57905 866 Rd Concord NE 68728-2828
US
Work 402-584-3803 On-campus 7-3803

Faculty Bio

Research Cited in CW
How Manure Impacts Soil Aggregation

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.

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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.

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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.

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Cover of the new ISU Publication,

Iowa Releases New Publication on Use of the Late Spring Soil Nitrate Test June 8, 2017

Following heavy spring rains, farmers may be interested in testing for soil nitrogen availability. This article notes a new publication from Iowa State University on using the Late Spring Soil Nitrate Test (LSNT) as well as other options for assessing soil nitrate.

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Chart of potential for nitrate-N leaching in spring 2017

Risk of Nitrate Leaching Across Nebraska as of May 21, 2017 May 25, 2017

Following heavy spring rains UNL soil scientists model potential loss of nitrate-N to soil leaching, finding an average 14% loss from mid-April levels, with three sites with much higher losses.

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soybean field

Planting Soybean after Soybean (Part 1): Planting Considerations April 13, 2017

Farmers are increasing their soybean plantings for 2017, which likely means some are shifting to soybeans-after-soybeans. This article looks at what you should be considering at planting time as you consider changing your cropping sequence.

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Center pivot irrigated soybeans
Management in a successful soybean-after-soybean cropping system may require growers to make some slight adjustments in their practices, including irrigation, seed selection, and pest management.

Planting Soybean after Soybean (Part 2): In-Season Management Considerations April 13, 2017

In Part 1 of this article, we look at considerations for planting soybean after soybean. In this article, Part 2, we share considerations for in-season management.

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Figure 1. Liquid fertilizer manifold used on a planter for applying starter fertilizer. (Photo by Charles Shapiro)

Starter Fertilizer: When is it Warranted? April 12, 2017

As you evaluate the cost of inputs, consider this: Only focusing on expenses without subsequent income changes is misleading. The most profitable plan uses the most profitable inputs. Is a starter fertilizer one of those inputs? The authors look at university and grower research under various conditions to see when a starter fertilizer offers economic benefits.

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