ISA Certified Arborist Practice Exam

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Prepare for the ISA Certified Arborist Exam with detailed flashcards and multiple-choice questions, each offering hints and explanations. Ace your certification test!

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Which type of fertilizer includes Nitro, Phosphorus, and Potassium in its composition?

Urea-formaldehyde
Leaching
Complete Fertilizer
Organic Fertilization

The correct answer is: Complete Fertilizer

Complete fertilizers contain Nitrogen (Nitro), Phosphorus, and Potassium (Potash) in their composition. This type of fertilizer provides a balanced combination of essential nutrients for plant growth and development. Option A, urea-formaldehyde, is a slow-release nitrogen fertilizer. Option B refers to leaching, which is the process of nutrients being washed away from the soil by water. Option D, organic fertilization, involves the use of organic materials to improve soil fertility, but it may not always contain the specific combination of Nitrogen, Phosphorus, and Potassium found in complete fertilizers.