Overview (Leaving Cert Agricultural Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which two ionic forms of nitrogen can plants absorb from soil?
Which two ionic forms of nitrogen can plants absorb from soil?
and
What is phosphorus absolutely critical for in plants?
What is phosphorus absolutely critical for in plants?
Root development and energy transfer
Which nutrient strengthens plant stems and improves disease resistance?
Which nutrient strengthens plant stems and improves disease resistance?
Potassium
What is magnesium's essential role in plants?
What is magnesium's essential role in plants?
Component of chlorophyll molecules
What is the optimal soil pH range for most agricultural crops?
What is the optimal soil pH range for most agricultural crops?
pH 6-7
What major problem occurs with phosphorus in acidic soils?
What major problem occurs with phosphorus in acidic soils?
It becomes locked up and unavailable
What does applying agricultural lime do to acidic soil?
What does applying agricultural lime do to acidic soil?
Raises pH and improves P availability
What does cation exchange capacity (CEC) measure?
What does cation exchange capacity (CEC) measure?
Soil's ability to hold positive ions
Which ion is particularly effective at promoting flocculation of clay particles?
Which ion is particularly effective at promoting flocculation of clay particles?
Calcium ()
What problem occurs when sodium ions dominate soil exchange sites?
What problem occurs when sodium ions dominate soil exchange sites?
Deflocculation and poor drainage