If the rate of application per hectare is 3.00 kg a.i., the quantity of simazine WP (80% a.i.) required to be sprayed in 0.20 hectare area would be
A. 0.50 kg
B. 0.75 kg
C. 1.25 kg
D. 1.87 kg
Answer: Option B
Solution(By Examveda Team)
Simazine is a selective herbicide used for the control of broadleaf weeds and annual grasses. It is recommended to be given in kg of a.i/ha or a.i %.Formula:
$$\eqalign{ & {\text{Amount of herbicide}} \cr & = {\text{ }}\frac{{{\text{recommened rate}} \times {\text{spray area}}}}{{{\text{a}}{\text{.i }}\% {\text{ of WG/WP/Dust}}}} \times {\text{100}} \cr & {\text{Amount of Simazine required}} \cr & = \frac{{\left( {3 \times 0.2} \right)}}{{80}} \times 100 \cr & = 0.75{\text{ kg}} \cr} $$
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