Soil is conserved by growing cover crops in plains, making terraces on hills, and building
Vucion
embankments along river banks.
LET US ANSWER.
A. Tick (/) the correct answers,
1. The wearing off or carrying away of soil by the action of water or wind is called
d. flood.
d. Sri Lanka,
c. afforestation
d. deforestation
a. storm.
2. The Hwang Ho river which changed its course very often is in
a. Holland.
b. India.
c. China,
3. This may lead to soil erosion.
a. terrace farming
b. growing of cover crops
4. Soil is mostly conserved by
a. afforestation.
b. deforestation.
5. Afforestation means
a. felling of trees.
c. growing trees.
b. overgrazing
d. making dams
c. making roads.
d. overgrazing
11
Answers
Explanation:
1= soil erosion
2=Holland
3=growing of cover crop
4=afforestation
5=growing of trees
Answer:
Explanation:
The harvest of low residue row crops, such as corn silage or soybeans, usually means the soil surface of a field will be left bare until the next crop is planted and a new plant canopy is established. In the Northeast, the next planting may be 5-7 months away. That's a long time for the bare soil to be subjected to erosion caused by rainfall, snowmelt, or wind. For that reason, cover crops are usually established and grown in the fall months, and remain during the winter. In the spring they are then killed and left on the surface as residue for conservation tillage or are incorporated into the soil.
Properly planned and executed, cover crops will protect farmland during this vulnerable period. Plan your cover crop species and management based on your objective(s): soil erosion, water quality, nutrient management, forage and/or soil quality. Not only is soil erosion greatly reduced, but many other benefits can be derived. However, there are risks too.