UPSC Civil Services 2016 Prelims General Studies Paper I

As per Tamilnadu Agriculture University:Advantages of drip irrigation system: Water saving and higher yield, High quality and increased fruit size, Suitable for all types of soil, Easy method of fertigation and chemigation, Saving in labour, reduces weed formation and soil erosion. Whereas Disadvantage of drip irrigation system: High initial investment, Clogging of emitters, Possible damage of system components due to animals, etc. After the exam, experts were divided between A and C since both soil salinity and soil erosion are reduced depending on various books. But, in its official Answer Key, UPSC has kept "C" as theanswer.