Waec Model Questions Vol1 2021 Agricultural Science Question 31
Practice objective / multiple choice question 31 from the 2021 Waec Model Questions Vol1 Agricultural Science examination.
A potato farmer observes water‑soaked lesions on leaves and a white mould on the undersides of leaves in a 2.5 ha field. These symptoms indicate late blight (Phytophthora infestans). The recommended spray is metalaxyl at a concentration of 0.2 % (w/v) applied at 0.75 L per hectare. How many grams of metalaxyl active ingredient are required to treat the whole field?
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About This Question
This is Waec Model Questions Vol1 2021 Agricultural Science Question 31. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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