Soil and water

Question 1 of 10

Which soil holds the most water?

Question 2 of 10

The removal of excess water from waterlogged soils is

Question 3 of 10

Sodic soils can be reclaimed by applying

Question 4 of 10

The washing down of nutrients beyond the root zone is

Question 5 of 10

Leaching is the

Question 6 of 10

The soil texture with the highest water-holding capacity is

Question 7 of 10

Waterlogged soils are improved by

Question 8 of 10

Surface runoff increases when

Question 9 of 10

The mixture of weathered rock, organic matter, water and air that supports plants is

Question 10 of 10

Drip irrigation is efficient because it