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.
Select an option to reveal the answer and explanation.
A hard Environment multiple-choice question from UPSC Prelims 2016. Attempt it above, then check the correct answer and detailed explanation below.
Show correct answer & explanation
Correct answer: A. 1 and 2 only
Drip irrigation reduces weed growth (water is delivered only at the plant root zone) and helps reduce soil salinity (controlled, localised watering). Reduction in soil erosion is not marked as an advantage in the official key. So 1 and 2 only — option (a).
Practise writing a full Environment answer and get it graded by our AI examiner — free.
More Environment questions
According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulphur dioxide emissions?
Consider the following: 1. Cashew 2. Papaya 3. Red sanders How many of the above trees are actually native to India?
Consider the following: 1. Butterflies 2. Fish 3. Frogs How many of the above have poisonous species among them?
Which one of the following trees shows a unique relationship with an insect that has coevolved with it and that is the only insect that can pollinate this tree?
Which one of the following is the correct description of "100 Million Farmers"?
Consider the following statements: 1. Lions do not have a particular breeding season. 2. Unlike most other big cats, cheetahs do not roar. 3. Unlike male lions, male leopards do not proclaim their territory by scent marking. Which of the statements given above are correct?