With reference to micro-irrigation, which of the following statements is/are correct? 1) Fertilizer/nutrient loss can be reduced. 2) It is the only means of irrigation in dry land farming. 3) In some areas of farming, receding of ground water table can be checked. Select the correct answer using the codes given below:

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CollectorBabu · Accepted Answer

Correct Answer: 1 and 3 only. Micro irrigation is an irrigation method which conserves water and fertilizer by allowing water to drip slowly to roots, either onto soil surface or directly to root zone by network of valves, pipes, tubing and emitters. With Micro irrigation: • Fertilizer and nutrient loss is minimized with local application. • Water application efficiency is high • Field levelling is not required • Irregular shaped fields are easily accommodated. • Recycled non-potable water can be safely used. • Moisture in root zone can be maintained at field capacity. • Type of Soil plays less important role in frequency of irrigation. • Soil erosion and Weed growth are lowered. Statement 1 is correct as Micro irrigation helps in checking loss of nutrients. Statement 2 is incorrect as micro irrigation is not the only means of irrigation in dry land farming. Statement 3 is correct as Micro irrigation will able to check depletion of ground water to some extent.

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