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Question
What is the need and importance of soil testing from the point of view of farmers?
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Solution
Soil testing is a method of determining the constituents of soil. A sample of soil is taken and is tested for its various characteristics for example, pH and electrical conductivity. It is important with respect to agricultural practices as it helps us in determining which crops can be grown in which region. It also gives us a knowledge about the deficient nutrients and this deficiency can then accordingly be dealt with. It is also useful in determining, if additional amounts of fertilizers are required.
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Answer the following questions in about 30 words.
What type of soil is found in the river deltas of the eastern coast? Give three main features of this type of soil.
Which minerals are found in Regur Soil?
How is Regur Soil formed? Mention four important features of Regur Soil.
Name one state in India which mostly has Red Soil.
Name the crops for which Red Soils is suitable.
Name the Soil which is formed due to high temperature and heavy rainfall with alternating wet and dry periods. Name two states where this type of Soil is found?
Give information on:
Measures of soil conservation.
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 |
‘Regur Soil’ is another name for the ______
Soil has particles of different sizes. Arrange the words given below in increasing order of their particle size.
| Rock, Clay, Sand, Gravel, Silt |
