Agricultural Land Suitability Quiz
Soil fertility, climate relations (10 questions).
Agricultural Land Suitability Quiz: Quick Study Notes
Agricultural capability depends on the intricate balance between soil health and climatic conditions. From soil horizons to growing degree days, these factors determine what crops can thrive in a specific region.
Core Concepts
Key Takeaways
- Loam is the optimal soil texture for most farming due to balanced drainage.
- Salinization is a major risk in arid regions utilizing irrigation.
- Nitrogen fixation by legumes is crucial for natural soil fertility.
- Topsoil (A Horizon) contains the highest concentration of biological activity.
- Growing Degree Days are used to predict crop maturity based on heat accumulation.
Frequently Asked Questions
What is the best soil for agriculture?
Loam is considered the best soil for agriculture because it contains a balanced mix of sand, silt, and clay, providing optimal drainage, aeration, and nutrient retention.
How does soil pH affect crop growth?
Soil pH affects the solubility of minerals. If the soil is too acidic or too alkaline, essential nutrients become chemically locked and unavailable to plant roots, stunting growth.
What is soil salinization?
Salinization is the accumulation of water-soluble salts in the soil. It often occurs in arid climates where irrigation water evaporates quickly, leaving salt residues that eventually become toxic to plants.
Why is organic matter important in soil?
Organic matter, or humus, acts as a sponge for water, provides food for soil microorganisms, helps aggregate soil particles for better structure, and releases nutrients slowly over time.
What defines a growing season?
The growing season is primarily defined by the number of frost-free days between the last frost of spring and the first frost of autumn, as well as daily temperatures conducive to plant photosynthesis.
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