USDA Crop Production Data & Information

Field Crops Experts & Extension Specialists

Dan Quinn

Agronomy
Corn Production & Management
765.494.5314

Shaun Casteel

Agronomy
Soybean & Small Grains Production and Management
765.494.0895

Charles Mansfield

Agronomy
Crop & Soil Management, SW Indiana
812.888.4311

Tony Vyn

Agronomy
Cropping Systems & Tillage
765.496.3757

Jim Camberato

Agronomy
Soil Fertility & Plant Nutrition
765.496.9338

Eileen Kladivko

Agronomy
Soil Drainage
765.494.6372

Shalamar Armstrong

Agronomy
Cover Crops
765.496.0256

Corey Gerber

Agronomy
Crop Diagnostic Training & Research Center
765.496.3755

Beth Hall

Indiana State Climatologist
Ag. Weather & Climate
765.494.8060

Lyndon Kelley

MSU/Purdue Educator
Crop Irrigation (Michigan/Indiana)
269.467.5511

Bill Johnson

Botany & Plant Pathology
Weed ID & Management
765.494.4656

Marcelo Zimmer

Botany & Plant Pathology
Weed ID & Management
765.494.2121

Darcy Telenko

Botany & Plant Pathology
Disease ID & Management
765.496.5168

Charles Woloshuk

Botany & Plant Pathology
Stored Grain Disease ID & Management
765.494.3450

Christian Krupke

Entomology
Insect ID & Management
765.494.4912

John Obermeyer

Entomology
Insect ID & Management
765.494.4586

Linda Mason

Entomology
Stored Grain Insect Management
765.494.4586

Directories of State Extension Specialists

Below are links to directories of state Extension crop specialists at other land grant universities throughout the United States:

  • Corn
  • Soybean
  • Small Grains
  • Forages

Recent Posts

corn silk
Stalk and Ear Rots: The Importance of Identifying Them Now to Help with Harvest Decisions

It is now time to evaluate fields for any stalk or ear rot symptoms. This will aid in making...

Read More
corn silk
Silk Emergence, Silk Length, and Missing "Butt" Kernels

The process of pollination is one of the most critical periods for grain yield determination in...

Read More
corn silk
Top "Dieback" and Senescence Patterns in Corn

As corn plants progress through grain fill and approach maturity, plant leaves naturally begin to...

Read More
corn haze
How Does Wildfire Smoke Impact Corn Growth?

In recent years, Indiana has experienced an increase in air quality concerns during the summer...

Read More
corn drought stress
Assessing Hail Damage in Corn

Recent storms which crossed Indiana brought welcome rains to current dry conditions, yet were not...

Read More
corn drought stress
Drought Stress and Indiana Corn in 2023

The biggest challenge so far this year for Indiana corn production has been the dry conditions...

Read More
thekernel-logo-092320-02-768x323.png
 West Lafayette, IN
 765-494-5314
 djquinn@purdue.edu