Online Course · Certificate Included
Build better fertilization and irrigation programs from real soil, water, and crop data
Learn how to interpret soil and water analyses, calculate crop requirements, select fertilizer rates, manage fertigation and salinity, and schedule irrigation using a practical agronomic framework. Taught by an internationally recognized expert with 25+ years in the field.
✓ English language
✓ Watch anytime
✓ Lifetime access
Sessions
Content
Countries
Practical
20+ countries represented
25+ years field experience
★★★★★ rated by students
The challenge
Good decisions require more than isolated agronomy knowledge
1
Build recommendations from field conditionsUse soil, water, crop demand, production targets, and management constraints to develop recommendations that fit the actual field rather than relying on generic rates.
2
Turn analyses into agronomic decisionsLearn how to interpret soil, water, and plant data and connect the results to nutrient rates, fertilizer selection, salinity management, fertigation, and irrigation decisions.
3
Coordinate nutrition and irrigationUnderstand how irrigation frequency, water quality, soil properties, nutrient availability, and crop demand interact so fertilization and irrigation decisions support each other.
The Cropaia approach
The course gives you a structured way to move from field data to a complete fertilization and irrigation program.
Soil, water, crop demand, nutrition, fertigation, salinity, and irrigation are treated as connected parts of the same agronomic decision framework.
What you’ll be able to do
Concrete skills you take back to the field
Each session builds toward one goal: helping you turn technical information into sound fertilization and irrigation decisions you can apply across crops and field conditions.
Course curriculum
10 sessions. From agronomic fundamentals to complete field decisions.
More than 15 hours of recorded, practical content across 10 sessions. The course progresses from soil, water, and crop fundamentals to analysis interpretation, fertilization planning, fertigation, and irrigation management. Watch at your own pace and revisit any time.
1
Essential macro & micronutrients · Nutrient uptake curves · Deficiency symptoms
2
Soil pH, CEC, organic matter · Nutrient availability by soil type · Soil biology
3
Alkalinity, hardness, EC, TDS · Harmful elements · Interpreting water analysis
4
EC, SAR & salinity thresholds · Crop yield impact · Prevention & management
5
Soil, water & plant tissue tests · Saturation of basic cations · Quantitative approaches
6
Target yield framework · Fertilizer selection & rates · Timing and application methods
7
Stock solutions & compatibility · Injectors & system design · Quantitative vs. proportional
8
Soil porosity & texture · Water holding capacity · Movement & osmotic effects
9
Evapotranspiration methods · Tensiometers & sensors · Drip & sprinkler systems
10
Real-world case worked through step-by-step · Q&A with instructor Guy Sela · Apply everything from sessions 1-9 to a complete scenario
Is this course right for you?
Built for professionals who make or influence agronomic decisions
This is an intermediate-level course. It assumes some agricultural background and moves quickly into practical application.
✓ This course is for you if you are…
✕ Probably not for you if…
Your instructor
Guy Sela
Guy Sela has spent over 25 years working in plant nutrition, water management, fertilization, irrigation, and practical agronomy. He has consulted with farmers, agronomists, companies, and governments across more than 20 countries – from Israel and the Mediterranean to Africa, Asia, and the Americas.
He founded SMART! Fertilizer Management software, one of the most widely used fertilization decision tools globally, and is the founder of Cropaia. His teaching combines the technical principles behind fertilization and irrigation with the calculations and practical reasoning required to make decisions in real field conditions.
Student reviews
What professionals say about this course
After almost 15 years in the fertilizer sector, I thought there was nothing more for me to learn. Luckily I was wrong. Guy challenged the experienced professional just as much as the novice. The course is a must-do for anyone in the fertilizing industry. Highly recommended.
I’m glad to inform you that I have finished the course. The depth of explanation in the Cropaia fertilization and irrigation course is unmatched. I’m so glad I took this course – it has already changed how I work in the field.
We are absolutely delighted with the content and the layout. It will be a most useful knowledge resource and has already changed how our team approaches fertilization recommendations for clients.
Training for agronomy teams
Bring the course to your agronomy team
The Fertilization and Irrigation course can also be delivered as a live professional training program for agronomy and technical teams. The program can be adapted to your crops, production systems, technical level, and agronomic challenges.
A common technical framework for the whole team
Live training gives the team a shared methodology for interpreting soil and water data, developing fertilization programs, managing fertigation and salinity, and making irrigation decisions. Real cases can be incorporated so the training connects directly to the organization’s field conditions.
Live delivery for agronomy and technical teams
Adapted to your crops and production systems
Practical discussion around real agronomic cases
Consistent decision-making across agronomists, farms, or regions
Certificate of completion
Earn a credential that proves your expertise
Common questions
Everything you need to know
Is the course live or recorded? +
The individual course is delivered as recorded sessions – you get access to all 10 recordings and can watch at your own pace, anytime, from any device. For organizations, the course can also be delivered live as a customized training program for agronomy and technical teams.
How long do I have access? +
Access is lifetime. Once enrolled, you can revisit any session whenever you need to refresh your knowledge or apply it to a new situation.
What level of experience do I need? +
This is an intermediate course. You should have some background in agronomy, agriculture, or a related field. It’s not designed for complete beginners, but you don’t need an advanced degree to follow along.
Is the course crop-specific? +
The course teaches the principles, calculations, and decision framework behind fertilization and irrigation rather than fixed recommendations for one crop. The methods can therefore be applied across different crops, soils, climates, and production systems.
Is the course only in English? +
The main course is in English. A Spanish version is also available – visit the Spanish course page for details.
Can I contact the instructor with questions? +
Yes. Guy Sela is directly reachable at guy.sela@cropaia.com or +972-523-597-964. Questions arising from the course content are welcomed.
How do I get the certificate? +
After completing all sessions and a short exam summarizing the course material, you’ll receive your certificate of completion from Cropaia.
What’s the refund policy? +
Please review the Cropaia refund policy for full details before enrolling.
Can my company train an agronomy team? +
Yes. Organizations can enroll multiple participants in the recorded course, and the program can also be delivered live as a customized training program for agronomy and technical teams. The live program can be adapted to your crops, production systems, technical level, and agronomic challenges. Contact info@cropaia.com to discuss the best format for your team.
Ready to enroll?
Build stronger fertilization and irrigation decisions
10 sessions · 15+ hours · Lifetime access · Certificate included
Secure checkout · Refund policy · Access on any device