Approximately 10,000 years ago, humans began cultivating determined plants. Cities, populations, and economies emerged as a result.
Soil is a living structure dependent on conditioning and erosional elements. An array of animals and bacteria aerate and enrich the ground; soil provides plants with nitrogen and other nutritional elements. Levels, quality, and composition vary with terrain and climate.
Development of Agriculture (03:07)
Farming originated in the region between the Mediterranean Sea and the Indo Valley; the practice spread globally. The plow and yoke are important early inventions, followed by soil rotation and fertilization techniques. Over the last 50 years, technology has advanced and spread, creating a vast increase in food production.
Increase in Productivity (03:38)
Approximately 30% of Earth's land is suitable for agriculture; irrigation techniques and fertilizers escalate yields and enhance soil. Insects are the greatest threat to harvests; insecticides and genetically modified plants were developed in response. Despite abundances and developments, starvation still plagues mankind.
Review agriculture origins, soil composition, developments, technolog,y and production topics.
Credits: Agriculture (993:57)
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