Soil science

Question 1 of 10

Macronutrients needed by plants in large amounts include

Question 2 of 10

Soil with 40% sand, 40% silt and 20% clay is classified as

Question 3 of 10

Soil air is important because roots need

Question 4 of 10

The soil with the smallest particles is

Question 5 of 10

The three major nutrients (macronutrients) needed by crops are

Question 6 of 10

The soil type with the largest particles and the poorest water-holding capacity is

Question 7 of 10

The best soil for most crops is

Question 8 of 10

Waterlogging harms plant roots mainly by

Question 9 of 10

Soil with pH 4.5 is likely to have

Question 10 of 10

Soils with a pH below 7 are