Online Course · Certificate Included
Build fertilization and irrigation programs you can explain, justify, and improve
Learn to design fertilization plans and irrigation regimes that respond to your actual soil, water, and crop conditions — not generic templates. Taught by an international expert with 15+ years in the field.
✓ English language
✓ Watch anytime
✓ Lifetime access
Sessions
Content
Countries
Practical
Course price
$250
10 recorded sessions · Certificate · Lifetime access
20+ countries represented
15 years field experience
★★★★★ rated by students
The problem
Information is everywhere, but clarity is hard to find
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We give you the logic to align your irrigation and nutrition with the actual demands of your crop, ensuring your investment drives the highest possible return.
The Cropaia approach
This course doesn’t give you another program to follow. It shows you how to build one from real field data.
You’ll learn how to move from analysis to a decision you can explain, justify, and repeat across fields.
What you’ll be able to do
Concrete skills you take back to the field
Each session builds toward one goal: giving you the knowledge to make better agronomic decisions independently.
Course curriculum
10 sessions. Every major topic covered.
Each session is 1.5–2 hours of recorded, practical content. Watch at your own pace, 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 results-oriented professionals. Not for hobbyists.
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 15 years working at the intersection of plant nutrition, water management, and practical agronomy. He has consulted with farmers, agronomists, 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 style is known for bridging theory with practical decision-making that matters in the field.
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.
Certificate of completion
Earn a credential that proves your expertise
Common questions
Everything you need to know
Is the course live or recorded? +
The course is delivered as recorded sessions — you get access to all 10 recordings and can watch at your own pace, anytime, from any device.
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 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 enroll multiple people? +
Yes – group and corporate enrollment is available. Contact info@cropaia.com to discuss pricing for teams and organizations.
Ready to enroll?
Stop guessing. Start making decisions.
10 sessions. Expert instruction. Certificate included. Start today.
Secure checkout · Refund policy · Access on any device