Charles A. Shapiro
Professor of Agronomy and Horticulture
Soil Scientist - Crop Nutrition

University of Nebraska Haskell Agricultural Laboratory
57905 866 Road
Concord, NE  68728
Email:  CSHAPIRO1@UNL.EDU
Phone:  (402) 584-3803
FAX:    (402) 584-3859

Education:

Ph.D.  University of Nebraska-Lincoln, 1982
M.S.   University of Nebraska-Lincoln, 1978
B.S.    Cornell University, 1974

Research/Extension Area of Emphasis:

Dr. Shapiro emphasizes crop nutrient management in research and public education programs.  Managing nutrients for crop production effectively increases profit for the producer and reduces the potential for off-site contamination.  Recommended practices are derived from research conducted at the Haskell Ag. Lab and on cooperating farmer fields.  Nutrient management takes into account the native fertility of the soil resource, credits from many sources and efficient application methods.

One stop shopping for Nebraska soil fertility information


Cropwatch Special Issue on Nitrogen

Nutrient Management Manual

Livestock Manure Management

Current CRP Information


Free Slide Rule
Free Slide Rule Offers Quick Calculation for Nitrogen Rates. News release describing the slide rule; three options for ordering one; and photos of the front and back of the slide rule. (A photo of the slide rule could be lifted for your site, if you like.)

Instruction for Using the Nitrogen Rate for Corn Slide Chart. Web version with photos.

Print friendly version of instructions. PDF, no photos.

Current Research:

UENRD 2008 Report on Sandylands Rotation Experiment
UENRD Final Report on Sandylands Rotation Experiment
LENRD 2008 Nitrogen Irrigation Demonstration Project
Corn Response to Nitrogen Rate, Row Spacing, and Plant Density in Eastern Nebraska
Influence of nitrogen and duration of weed interference on corn growth and development
Nitrogen application influences the critical period for weed control in corn
Effect of Amisorb on Irrigated Corn, 1998
Abstract:  Using a Chlorophyll Meter to Manage Nitrogen Applications to Corn with High Nitrate Irrigation Water
Abstract: Effect of Choosing a Target Soil Phosphorus Level for Corn
Abstract: Planting Strategies Involving Skipped Rows to Improve Drought Tolerance in Rainfed Corn
Abstract: Improving Corn/Soybean Profitability Workshops
Salt Thresholds for Liquid Manure Applied to Corn and Soybean
Glyphosate-Resistant Soybean Cultivar Yields
Glyphosate-Resistant Soybean Cultivar Response to Glyphosate
Effect of Swine Lagoon Water Application Rate and Alfalfa Harvest Frequency on Dry Matter Production and N Harvest
Managing Swine Dietary Phosphorus to Meet Manure Management Goals (2002 Nebraska Swine Report EC 02-219-A)
Research Nebraska: Finding Safe Levels, times for applying manure to growing crops, Fall/Winter 2004
Manure Use Planning: An Evaluation of a Producer Training Program
Effects of manure application on soil aggregation
No-till Row Crop Response to Starter
High-Yielding Corn Response to Applied Phosphorus, Potassium, and Sulfur in Nebraska
Nitrogen Response and Economics for Irrigated Corn in Nebraska 
Nitrogen Use Efficiency of Irrigated Corn for Three Cropping Systems in Nebraska

Proceedings:

Extension Programming for Improving Nitrogen and Irrigation Management in Nebraska

NebGuides, NebFacts, and Extension Circulars:

EC 126 Evaluating Hail Damage to Corn
G79-481-A Setting a Realistic Corn Yield Goal
EC 117 Fertilizer Suggestions for Corn
G859 - Fertilizer Recommendations for Soybeans
G1598 - Fertilizer Management for Alfalfa
G 1669 - Fertilizer Suggestions for Grain Sorghum
EC 192 Calculating the Value of Manure for Crop Production Spreadsheet Instructions
EC 778 Application of Liquid Animal Manures Using Center Pivot Irrigation Systems
G1315 Composting Manure and Other Organic Residues
G1335 Determining Crop Available Nutrients from Manure
G1519 Calculating the Value of Manure for Crop Production
G1780 Manure Testing: What to Request?
G1450 Sampling Manures for Nutrient Analysis
G1315 Composting Manure and other Organic Residues
G1740 Guidelines for Soil Sampling
G1939 Sewage Sludge Utilization for Crop Production
G1504 Lime Use for Soil Acidity Management
G1503 Management Strategies to Reduce the Rate of Soil Acidification
G1846 Harvesting Crop Residues
G02-1466-A Determining the Need to Fertilize Landscape Trees and Shrubs (Revised March 2004)
G 1632 - Using a Chlorophyll Meter to Improve N Management
G1970 Soil Fertility Considerations for Land Coming Out of Conservation Reserve Program (CRP)

Journal Article:

Use of Fly Ash as a Liming material of Corn and Soybean Production on an Acidic Sandy Soil

Regional Publications:

RP187 Agricultural Phosphorus Management and Water Quality Protection in the Midwest
RP189 Agricultural Nitrogen Management for Water Quality Protection in the Midwest

Out of Print Publications: 

G02-1466 Determining the Need to Fertilize Landscape Trees and Shrubs (Revised March 2004)
NF01-491 The Corn Stalk Nitrate Test
G79-481 Setting a Realistic Corn Yield Goal (Revised January 2004)

Webinar:

Webinar on Converting CRP to Corn and Soybeans

Radio Tapes:

A listing of current radio tapes is available at the Agalmanac link:


Audio Clips:
You need Real Player to listen to these audio clips, click here for a free download of the program.

Fall Soil Sampling