Science Societies
(ASA) American Society of Agronomy
(CSSA) Crop Science Society of America
(SSSA) Soil Science Society of America
(ASF) Agronomic Science Foundation

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Decode 6
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Foundations of Applied Agronomy
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Decode 6
Decode 6
Foundations of Applied Agronomy
Foundations of Applied Agronomy
Continuing Education
Online Classroom
Online Classroom
Webinars
Webinars
Field, Lab, Earth podcast
Field, Lab, Earth podcast
Decode 6
Decode 6
Foundations of Applied Agronomy
Foundations of Applied Agronomy
Publications
Online Library
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Publish With Us
Publish With Us
Journals
Journals
Books
Books
Crops & Soils Magazine
Crops & Soils Magazine
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Peer Review
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Soils Glossary
Soils Glossary
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Online Library
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Publish With Us
Publish With Us
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Books
Crops & Soils Magazine
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Soils Glossary
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Abstract and Session Submission
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Specialized Meetings
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Sustainable Agronomy Conference
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Undergraduate Spring Meeting
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CCA Events Calendar
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Past Events and Programs
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Specialized Meetings
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Sustainable Agronomy Conference
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Undergraduate Spring Meeting
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Certified Professional Soil Scientists
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Certification
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Certified Crop Adviser
Programa CCA México
Certified Professional Agronomist Engineer – Brasil
International
Exam information
About the exam
Exam study tools
Register
Already certified
Renew
Renew
Check CEUs
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Specialty certifications
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Promote yourself
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Get TSP certified
Get TSP certified
Already certified
Renew
Renew
Check CEUs
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Specialty certifications
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Promote yourself
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Get TSP certified
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Get CEUs
Purchase courses
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My courses (online classroom)
My courses (online classroom)
Online classroom subscription
Online classroom subscription
Other CEU opportunities
Other CEU opportunities
Get CEUs
Purchase courses
Purchase courses
My courses (online classroom)
My courses (online classroom)
Online classroom subscription
Online classroom subscription
Other CEU opportunities
Other CEU opportunities
Offer CEUs
Offer CEUs
Local CCA boards
ICCA Board
ICCA Board
Contact your local board
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Local CCA boards
ICCA Board
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Contact your local board
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Find a CCA
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Certified Professional Soil Scientists
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November 2025
Volume 70, Issue 11
Recent articles
In memoriam: Antonio Sotomayor-Ríos
October 28, 2025
Nitrogen supply affects soybean yield differently within the canopy
October 28, 2025
Global barley collection provides genetic insights on resistance to devastating fungal pathogen
October 24, 2025
CSA News
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November 2025
Volume 70, Issue 11
Recent articles
In memoriam: Antonio Sotomayor-Ríos
October 28, 2025
Nitrogen supply affects soybean yield differently within the canopy
October 28, 2025
Global barley collection provides genetic insights on resistance to devastating fungal pathogen
October 24, 2025