Agronomy 375 - Crop Production Systems


Professor, Dr. Lee Schweitzer​​

Past Exams & Keys

Helpful Crop Management Web Sites (print list)​

Corn - Current GMO Traits - Chris DiFonzo, Michigan State University

Corn Nitrogen Guidelines for Indiana​

Corn – Very Comprehensive. Wide Range Of Resources. National Corn Grower’s Association

GMO Export Corn Market Approval Status. Includes specific hybrids. Know Before You Grow Portion of NCGA web site.

Herbicide and Premix Specimen Label and Material Safety Data Sheet (MSDS) Information.

Herbicide Material Safety Data Sheet (MSDS) and Specimen Label Information. Premium Information (i.e. Search Engine Enabled) on a subscription basis.

Herbicide Resistant Weeds – International List

Herbicide (Including Modes Of Action) And General Weed Control Information. Weed Control Guide For Ohio And Indiana. WS-16. The Ohio State University and Purdue University.

​SST Sirrus Online Training​

SST Summit Online Training

Tri-State Fertilizer Recommendations - Prior to December 2020 - Historical Reference Only - No Longer Current (Extension Bulletin E 2567)

Tri-State Fertilizer Recommendations - Subsequent to December 2020 - "Executive Summary-Revised Field Crop Fertilizer Recommendations Indiana, Michigan, and Ohio. Tri-State"

Tri-State Fertilizer Recommendations - Converting Between Mehlich-3, Bray P1, and Ammonium Acetate Soil Test Values

Hybrid and Variety Performance Trials - Purdue University

Midwest Cover Crop Council - Excellent cover crop decision tool and support resources.

NRCS SSURGO Soil Survey Data​

Purdue Agricultural Extension

Purdue Pest and Crop Newsletter. Excellent current and archived crop extension scouting newsletters.

Purdue Agricultures Magazine

Purdue Agronomy On Line. Many Useful Links. Including Agronomy Links Across The Globe, Course Information, Extension Publications, Purdue Variety Trial Data.

Purdue Chat ‘N Chew Café. Useful Gathering Of Crop Related Links and Information.

Purdue Entomology Extension Field Crops Group. Excellent Links To Updated Publications Covering Insect Management In Field Crops.

Purdue Select-A-Herbicide

Purdue University Entomology Field Crop Insect Publications – PDF format and html

UIUC Agriculture Extension

Soybean Rust (Asian Soybean Rust - ASR). Comprehensive coverage

- USDA Soybean Rust Information.

Soybean Research & Information Initiative

U.S. Crop Yield Map By County

USDA Crop Related Reports, Maps, and Statistics

Weather Forecasts, Current Doppler Radar. The Weather Channel. Search By Zip Code.

Weed ID Key and Related Resources