LEC 9

Question 1

the practice of preventing or controlling wind or water erosion in agriculture, land development, coastal areas, riverbanks and construction

Answer 1

erosion control

Question 2

plating along contours/land surface with the same elevation

Answer 2

contouring

Question 3

alternate planting of 2 or more different crops along contours

Answer 3

strip cropping

Question 4

placement of crop residues or other materials around the base of plants or throughout the field

Answer 4

mulching

Question 5

alternate planting of different crops on successive planting seasons

Answer 5

crop rotation

Question 6

a minimum tillage practices in which the crop is sown directly into soil not tilled since the precious crop

Answer 6

zero tillage or dibble tillage

Question 7

erosion control practices (CSMCZ)

Answer 7

contouring
strip cropping
mulching
crop rotation
zero tillage/dibble tillage

Question 8

engineering and mechanical methods

Answer 8

terracing
protected waterways
diversion channels
geotextile

Question 9

reduce velocity and increasing time for infiltration

Answer 9

terracing

Question 10

for gullies, streams, and rivers

Answer 10

protected waterways

Question 11

increases roughness coefficient

Answer 11

use of grassed waterways

Question 12

concrete, bricks, stone/ripraps

Answer 12

channel linings

Question 13

weir, chute, drop spillway, drop inlet

Answer 13

drop structures