give me a one minute speech on "The Soil Preservation Drive"
Answers
SOIL PRESERVATION DRIVE
Soil Conservation is a combination of practices used to protect the soil from degradation. First and foremost, soil conservation involves treating the soil as a living ecosystem. This means returning organic matter to the soil on a continual basis. Soil conservation can be compared to preventive maintenance on a car. Soil conservation techniques encourage water infiltration in the soil or harvest water in infiltration pits and dams rather than having the water run on the land surface and carry with it the topsoil and organic matter.
The 3 principles are minimum tillage and soil disturbance. permanent soil cover with crop residues and live mulches. crop rotation and intercropping.
Slash-and-burn and other unsustainable methods of subsistence farming are practiced in some lesser developed areas. A sequel to deforestation is typically large-scale erosion, loss of soil nutrients, and sometimes total desertification. Techniques for improved soil conservation include crop rotation, cover crops, conservation tillage, and planted windbreaks, which affect both erosion and fertility.
Soil-conservation farming involves no-till farming, "green manures" and other soil-enhancing practices which make it hard for the soils to be equalized. Such farming methods attempt to mimic the biology of barren lands. They can revive damaged soil, minimize erosion, encourage plant growth, eliminate the use of nitrogen fertilizer or fungicide, produce above-average yields and protect crops during droughts or flooding. The result is less labor and lower costs that increase farmers’ profits. No-till farming and cover crops act as sinks for nitrogen and other nutrients. This increases the amount of soil organic matter.
Salinity in the soil is caused by irrigating with salty water. Water then evaporates from the soil leaving the salt behind. Salt breaks down the soil structure, causing infertility and reduced growth. The ions responsible for salination are: sodium (Na+), potassium (K+), calcium (Ca2+), magnesium (Mg2+) and chlorine (Cl−). Salinity is estimated to affect about one-third of the earth's arable land. Soil salinity adversely affects crop metabolism and erosion usually follows.
When worms excrete feces in the form of casts, a balanced selection of minerals and plant nutrients is made into a form accessible for root uptake. Earthworm casts are five times richer in available nitrogen, seven times richer in available phosphates, and eleven times richer in available potash than the surrounding upper 150 millimeters (5.9 in) of soil. The weight of casts produced may be greater than 4.5 kg per worm per year. By burrowing, the earthworm improves soil porosity, creating channels that enhance the processes of aeration and drainage.
Benefits Of Soil Conservation
- Boosts earth quality and productivity.
- Mitigates erosion.
- Promotes water infiltration and increases its storage.
- Aids air and water purification.
- Gives food and shelter for wildlife.
Answer:
Hey do you study in Birla Public School Doha Qatar
Explanation:
Soil is Importantto the life on planet earth. to preserve life we need to preserve soil. soil preservation is preservation of life. life can only exist if soil exists and soil can onlly exist if life exist . so lets put forward the first step toward a cleaner soil.
by the way do you study in bps doha???