Which of the following is/are the advantage/advantages of practising drip irrigation? 1. Reduction in weed 2. Reduction in soil salinity 3. Reduction in soil erosion Select the correct answer using the code given below.
- A1 and 2 only
- B3 only
- C1 and 3 onlyCorrect
- DNone of the above is an advantage of practising drip irrigation
Explanation
Statement 1 is correct. Drip irrigation significantly reduces weed growth because water is delivered directly to the root zone of plants, leaving the surrounding soil dry and unfavorable for weed germination.
Statement 2 is incorrect. Drip irrigation does not necessarily reduce soil salinity. In fact, in some cases, it can lead to salt accumulation at the periphery of the wetted zone as water evaporates.
Statement 3 is correct. Drip irrigation reduces soil erosion because water is applied slowly and directly to the soil near plant roots, avoiding surface runoff that causes erosion.
Therefore, only statements 1 and 3 are correct.
Related questions
More UPSC Prelims practice from the same subject and topic.
- Prelims 2016GS1geography
Which of the following is/are tributary/tributaries of Brahmaputra? 1. Dibang 2. Kameng 3. Lohit Select the correct answer using the code given below.
- Prelims 2016GS1geography
What is/are unique about 'Kharai camel', a breed found in India? 1. It is capable of swimming up to three kilometres in seawater. 2. It survives by grazing on mangroves. 3. It lives in the wild and ca…
- Prelims 2016GS1geography
With reference to 'Red Sanders', sometimes seen in the news, consider the following statements: 1. It is a tree species found in a part of South India. 2. It is one of the most important trees in the …
- Prelims 2016GS1geography
In which of the following regions of India are shale gas resources found? 1. Cambay Basin 2. Cauvery Basin 3. Krishna-Godavari Basin Select the correct answer using the code given below.
- Prelims 2016GS1geography
Recently, linking of which of the following rivers was undertaken?
- Prelims 2016GS1geography
Recently, which of the following States has explored the possibility of constructing an artificial inland port to be connected to sea by a long navigational channel?