WAEC Agricultural Science 2022 Objective — Question 32

Question 32 of 50 from the West African Examinations Council (WAEC) Agricultural Science 2022 Objective paper, with the correct answer and a full explanation.

Soil-borne diseases could be controlled in the nursery by

A. mulching
B. manuring
C. heat treatmentCorrect
D. provision of shade

Explanation

Heating (sterilizing) the soil is a very effective method of controlling soil-borne diseases — most pathogens are killed by brief exposure to high temperature (about 140°F for 30 minutes).

Sign up free to unlock

Score tracking
Practice history
Saved questions
Progress dashboard
Personalized sessions
Weak-topic breakdown

…and/or go further with premium services and No Ads.

Create free account

More questions from Agricultural Science 2022 Objective More Agricultural Science past papers