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प्रश्न
Complete the following table with reference to the soil.
| Action | Effect | Result (w.r.t. fertility) |
| Construction of embankments | ||
| Wind speed decreased | ||
| Farmland is kept fallow for some period | ||
| Humus content increased. | ||
| Trenches are dug across a slope | ||
| Litter is burnt on the farm. | ||
| Proves favorable for micro-organisms | ||
| The salt content in the soil increases | ||
| Chemical fertilizers used excessively |
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उत्तर
| Action | Effect | Result (w.r.t. fertility) |
| Construction of embankments | Reduction in the erosion of soil due to heavy rains. | Increase in Fertility |
| Planting trees | Wind speed decreased | Increase in Fertility |
| Farmland is kept fallow for some period | The fertility of soil gets maintained. | Increase in Fertility |
| Use of organic manures | Humus content increased. | Increase in Fertility |
| Trenches are dug across a slope | Check over the velocity of water running along the slopes and hence reduction in soil erosion | Increase in Fertility |
| Litter is burnt on the farm. | The proportion of ash in the soil gets increased. | Decrease in Fertility |
| Use of organic manures | Proves favorable for micro-organisms | Increase in Fertility |
| Excessive irrigation | The salt content in the soil increases | Decrease in Fertility |
| Chemical fertilizers used excessively | Decrease the number of microorganisms and so the proportion of humus in the soil | Decrease in Fertility |
संबंधित प्रश्न
Name the soil which occurs ex situ
Differentiate between transported soil and In-situ soil, quoting a suitable example for each.
What are the other names of Black Soil? Where are they found?
How is red soil formed?
Where is Laterite Soil found?
Why is Laterite Soil unsuitable for cultivation? Name an area where this Soil is found.
Name the varieties of Alluvial Soils. Where are they found?
Alluvial soil of the northern plains and the alluvial soil on the coastal plains of India.
Name the transported Soil most widely found in India. State the two sub-categories into which it is generally divided. What are their local names and which one of them is superior to the other.
Soil has particles of different sizes. Arrange the words given below in increasing order of their particle size.
| Rock, Clay, Sand, Gravel, Silt |
