Agronomy Study Guide 2026
Everything you need to pass the Agronomy exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 Agronomy Exam Format at a Glance
📚 Agronomy Topics to Study (31)
✍️ Sample Agronomy Questions & Answers
1. Which cover crop is most commonly used to add nitrogen back to the soil?
Hairy vetch is a legume that fixes atmospheric nitrogen through root nodule bacteria, making it a popular nitrogen-building cover crop.
2. What is the primary goal of marker-assisted selection (MAS) in plant breeding?
MAS uses molecular markers associated with desired traits to select superior plants without waiting for phenotypic expression, speeding up breeding cycles.
3. What is leaching requirement in irrigated agriculture?
Leaching requirement is the fraction of applied irrigation water that must pass through and below the root zone to prevent salt accumulation to damaging levels.
4. Which of the following best describes 'vernalization' in crop plants?
Vernalization is the induction of flowering by exposure to prolonged cold, a requirement for many winter cereals like winter wheat.
5. Which of the following is an illustration of an intercrop?
Intercropping is the practice of growing two or more crops simultaneously on the same field. Moong (green gram) is a common legume frequently intercropped with cereals like bajra (pearl millet) or maize. Legumes like moong are beneficial intercrops because they fix atmospheric nitrogen, enriching the soil and benefiting the companion crop.
6. Center pivot irrigation systems are designed to apply water in what pattern?
Center pivots rotate around a fixed central point, applying water in a circular pattern and covering large areas efficiently.