Final answer:
Loamy soil is considered the most fertile due to its balanced mixture of sand, silt, clay, and organic matter. It retains nutrients, maintains moisture and drainage, and hosts beneficial microorganisms. Its structure fosters bio-diversity and supports ecosystem services beneficial to agriculture.
Step-by-step explanation:
Loamy soil is considered the most fertile soil due to its balanced mixture of sand, silt, and clay, also known as mineral nutrients, and substantial organic matter. This combination creates a nutritious environment optimal for plant growth. Not only does it retain essential nutrients but also maintains an effective moisture level, aiding in the distribution of these minerals. Furthermore, this soil type accommodates a vast diversity of microorganisms such as bacteria, fungi, and algae that contribute to nutrient cycles and soil texture, effectively maintaining the soil ecosystem.
The presence of humus in loamy soil, which is decayed organic matter, enhances the soil texture allowing for good water retention and air exchange, essential elements for healthy plant growth. These are indications of good soil quality which directly influences crop success and soil fertility.
Lastly, loamy soil has a favorable structure that promotes bio-diversity in soil ecosystems providing environmental benefits such as food production, water availability, and air purification known as ecosystem services. Therefore, fertile loamy soil reduces the cost of farming by naturally maintaining arable land, making it highly beneficial in agriculture.
Learn more about Loamy Soil