5.15: Sustainable Agriculture

Question 1

Contour Plowing

Answer 1

It preserves the natural topography of the land and leaves the soil intact

Question 2

Windbreak

Answer 2

Rows of trees or shrubs are planted in a way that provides crops shelter from the wind and reduces wind erosion that may blow soil away

Question 3

Strip cropping

Answer 3

Planting rows of different crops and harvesting one crop at a different time which leaves the other crop holding the soil in place

Question 4

Terracing

Answer 4

Sloped land that has been cut into a series of receding flat platforms which decreases the velocity of water going downhill, reducing soil erosion

Question 5

No Till Agriculture

Answer 5

Leaves soil in place by not breaking up the root structure so it can resist erosion

Question 6

Perennial Crops

Answer 6

Crop roots hold soil together year-round, does not have to be replanted

Question 7

Rotational Grazing

Answer 7

Cycling of livestock around a particular part of their pasture as to not overgraze an area

Question 8

Soil fertility

Crop Rotation

Answer 8

May replenish soils of nutrients naturally; legumes adding nitrogen back to soil

Question 9

Soil fertility

Green Manure

Answer 9

Adds bulk and NPK to soil that slowly decomposes

Question 10

Soil fertility

Limestone

Answer 10

Adds valuable calcium to soil and increases pH of soils making it more alkaline