Forestry

Suppression of weeds, by restricting the amount of light on the ground surface and the hindering their germination and growth

Conservation of soil, by preventing erosion

Thermal insolation, leading to greater deposition of dew

All of the above

1-2%

3-5%

5-10%

20-30%

Allotropy

Allelopathy

Synnecrosis

Allolimy

California

Washington

New York

None of these

Fertility

Porosity

Thickness

Nitrates

Pan breaking

Levelling

Ridge terracing

All of these

Encourage large scale growing of trees on private farms by providing subsidized nursery stock and technical assistance

Encourage the private growing of industrial wood.

Promote growing of compact plantations on waterlogged, saline and other marginal private lands

All of the above

Screening

Fanning

Floating

All of the above

Industries

Automobiles

Home fuel

Trees

Weathering

Gleization

Laterization

Pedogenesis