Principles of crop production

Question 1 of 10

Supporting yam vines with sticks so they climb is called

Question 2 of 10

The law of the minimum (Liebig) states that growth is limited by

Question 3 of 10

Planting improved seeds helps to

Question 4 of 10

A farmer applies 120 kg of N per hectare using sulphate of ammonia (21% N). The fertiliser needed per hectare is about

Question 5 of 10

The first step in crop production is usually

Question 6 of 10

Planting distance between crops affects

Question 7 of 10

Covering the soil around crops with dry grass or leaves is

Question 8 of 10

Seed dormancy means

Question 9 of 10

Supplying nutrients through fertiliser is called

Question 10 of 10

The amount of seed sown per unit area of land is the