Irrigation Engineering [1]
6) Sandy soils with good drainage become impermeable after prolonged use, if it is irrigated with a water containing ................. sodium.
7) For irrigation purposes, the p-H value of water should be
8) Which of the salt present in water is harmful for cultivation purposes ?
9) When an oven-dried sample of soil is kept open in the atmosphere, it absorbs some amount of water. This water is known as
10) A part of water which exists in the porous space of the soil by molecular attraction, is known as