Irrigation by different means

Explain how, the irrigation requirements depend on the nature of the crop.

Explain, how efficiency of irrigation can be increased.

What is irrigation? Describe two methods of irrigation which conserve water.

If one plots the tank irrigation in India and superimposes it with map of well irrigation, one may find that the two are negatively related. Which of the following statements explain the phenomenon? 1. Tank irrigation predates well irrigation. 2. Tank irrigation is in the areas with impervious surface layers. 3. Well irrigation requires sufficient groundwater reserves. 4. Other forms of irrigation are not available. Select the correct answer using the code given below.

Why is irrigation essential ?

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:

The term 'intra-individual differences' means