Gce Model Questions Vol1 2018 Agricultural Science Question 22
Practice objective / multiple choice question 22 from the 2018 Gce Model Questions Vol1 Agricultural Science examination.
In a 10 ha maize field the initial incidence of stalk rot is 25% of the plants. A farmer first adopts a resistant variety that reduces the incidence by 30% of the initial value and then sprays a fungicide that reduces the remaining incidence by 50%. The field has a plant density of 40 000 plants per ha. What is the final percentage incidence of the disease and how many plants are expected to be infected after both control measures?
Answer Options
About This Question
This is Gce Model Questions Vol1 2018 Agricultural Science Question 22. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.