Chapter 9 Soil and AgricultureAgriculture

Chapter 9 Soil and AgricultureAgriculture - Chapter 9 Soil...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 9 Soil and Agriculture Agriculture - practice of raising crops and livestock for human consumption cropland -land used to raise plants rangeland - land used for grazing livestock - pasture Healthy soil - vital for agriculture. Sil contains nutrients and organic matter for plant groth but it can be altered if abused Growing need for food production but suitable framland is running out so land is being over farmed and its quality is being degraded Mismanaged agriculture - causing environmental damage and degradation of soil. Most soil degradation in world caused by: cropland agriculture overgrazing of livestock deforestation In Brazil and other subtropical areas: repeated plowing and planting destroyed soil Land tilled and left bare after planting caused erosion in subtropical regions because of heavy rains (tilling means turning the soil over and the decomposing plant matter is then put back into the soil to nourish it) crop yields suffered solution : no-tillage (zero-tillage, no-till) - Instead of tilling the soil after harvest, cover crops are
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Chapter 9 Soil and AgricultureAgriculture - Chapter 9 Soil...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online