Fertile riverine alluvial soil is best suited for producing ________.
rice
Understanding Fertile Riverine Alluvial Soil and Crop Suitability
Fertile riverine alluvial soil is a type of soil deposited by rivers. These soils are typically found in river valleys, deltas, and floodplains. They are known for being rich in nutrients and having a fine texture, often containing a good mix of silt, clay, and sand. This composition makes them very fertile and capable of holding moisture well, while also allowing for some drainage.
Let's consider the suitability of the given crops for this type of soil:
- Corn: Corn (maize) can grow in a wide variety of soils, but it generally thrives in well-drained, fertile loamy soils. While alluvial soil can be fertile, some types might be too heavy (high in clay) or prone to waterlogging, which isn't ideal for most corn varieties, although some varieties tolerate it.
- Cotton: Cotton typically requires warm climates and well-drained black soils or alluvial soils that are not prone to excessive waterlogging. It needs sufficient moisture during the growing season but is sensitive to standing water.
- Rice: Rice is a crop that requires a significant amount of water and can tolerate standing water, especially paddy rice varieties. Fertile alluvial soils, particularly those with a higher clay or silt content, are excellent for rice cultivation because they are nutrient-rich and their texture helps in retaining water, which is crucial for paddy farming. Riverine deltas and floodplains with alluvial soils are historically major rice-growing regions precisely because of these conditions.
- Tea: Tea plants prefer well-drained, acidic soils, often found in hilly regions. Standing water is detrimental to tea roots. Therefore, fertile riverine alluvial soils, which are often neutral to slightly alkaline and can retain a lot of water, are generally not suitable for tea cultivation.
Comparing the requirements of these crops with the characteristics of fertile riverine alluvial soil, rice cultivation is the best fit. The soil's fertility and water-holding capacity align perfectly with the needs of rice, particularly in traditional paddy cultivation systems.
| Crop | Typical Soil Preference | Suitability to Fertile Riverine Alluvial Soil |
|---|---|---|
| Corn | Well-drained loam | Moderate (depends on drainage) |
| Cotton | Well-drained black soil or alluvial soil | Good (if drainage is adequate) |
| Rice | Fertile alluvial or clayey soil (often requires waterlogging) | Excellent |
| Tea | Well-drained, acidic soil | Poor |
Revision Table: Soil Types and Compatible Crops
| Soil Type | Key Characteristics | Common Crops Grown |
|---|---|---|
| Alluvial Soil | Fertile, rich in humus, fine-grained, found near rivers/deltas | Rice, Wheat, Sugarcane, Jute, Pulses, Vegetables |
| Black Soil (Regur Soil) | High clay content, moisture retentive, self-ploughing, rich in lime/iron/magnesia/alumina | Cotton, Sugarcane, Tobacco, Wheat, Jowar |
| Red Soil | Porous, less fertile (needs fertilizer), red color due to iron oxides | Groundnuts, Ragi, Tobacco, Jowar, Potatoes (with irrigation) |
| Laterite Soil | Leached, acidic, less fertile, found in high rainfall areas | Tea, Coffee, Cashew, Rubber (after management) |
| Mountain Soil | Varies by altitude, often loamy/silty, rich in humus in valleys | Tea, Coffee, Spices, Fruits |
Additional Information: Characteristics of Alluvial Soil
Alluvial soils are considered among the most fertile soils globally. Their fertility is due to the constant deposition of silt and clay carried by rivers from the upper courses. These sediments are rich in minerals weathered from rocks upstream.
Key characteristics include:
- Formation: Deposited by rivers, streams, and floodwaters.
- Composition: Variable, ranging from sandy loam to clayey loam. Silt content is often high.
- Fertility: Generally very fertile, rich in potash but often deficient in phosphorus and nitrogen.
- Texture: Ranges from coarse (near river mouths) to fine (in deltas or lower plains). Fine texture helps retain moisture.
- Distribution: Found extensively in river valleys and plains worldwide.
The combination of fertility and moisture retention makes these soils ideal for water-intensive crops like rice, especially in regions where irrigation relies on river systems or receives high rainfall.
Similar Questions
Which of the following is more suitable than the others for the growth of cashew nut?
The method of soil conservation in which stones, grass, soil are used to build barriers along contours and trenches are made in front of the barriers to collect water is called?
The northern plain of India is formed of _________.
_________ influences the rate of weathering and humus in soil formation.
The method of soil conservation in which rocks are piled up to slow down the flow of water which prevents gullies and further soil loss is called?
Which of the following statements about black soil is INCORRECT?
The method of soil conservation in which bare ground between plants is covered with layer of organic matter like straw is called ________
Identify the black soil region of India from the following.
Important Questions from Soils
Match List 1 with List 2 and choose the correct answer form the code given below:
List 1
(Soil Type)
List 2
(States)
(a) Alluvial
1. Kerala
(b) Red
2. Uttarakhand
(c) Laterite
3. Tamil Nadu
(d) Submontane
4. Uttar Pradesh
Soil contains decayed remains of living organisms. This is called ______.
The black cotton soil of India has been formed due to the weathering of
The agricultural practice followed after preparation of the soil is:
What is the character of the black soil’s slow absorption and loss of moisture, which in turn retains the moisture for a very long time called?
