Soils of western Rajasthan have a high content of:
Correct Answer:
(B) Calcium
The districts of Jaisalmer, Bikaner, Barmer, Jalore, Jodhpur, Ganganagar, Sirohi, Jhunjhunu, Pali and Sikar of western Rajasthan have alkaline and saline soils with a calcareous base. There is some nitrate concentration in the soil of these regions. Hence, soils of western Rajasthan have a high content of calcium.
Ques: 2
Karewas soils, which are useful for the cultivation of Zafran (a local variety of saffron), are found
Correct Answer:
(A) Kashmir Himalaya
Karewa soil is found in the Kashmir Valley and is used for growing local saffron called Zafran.
Ques: 3
Following are the statements regarding the Usar soil:
It is reclaimed by adding lime.
This soil has pH more than seven.
Paddy crop can be grown in this soil.
Select the correct answer from the codes given below:
Codes:
Correct Answer:
(B) 2 and 3 are correct
Usar soil has more pH than 7. There is a severe deficiency of bacteria, nitrogen and zinc in this soil. Pyrites, gypsum and green manure are used for its treatment. This type of land is suitable for cultivation of tolerant paddy varieties like Narendra Shankar Usar Paddy-1, Usar Paddy-2 etc. The use of lime is used in the treatment of acidic soil instead of the treatment of the Usar Soil. So, option (b) is the correct answer.