Which of the following statement is correct?
A. Flat fan spray nozzles are widely used for broadcast spraying of herbicides and insecticides
B. Flooding fan nozzle "turbo floodjet" is designed for use with soil-incorporated herbicides and liquid fertilizers
C. Cone nozzles is a low drift nozzle and is used to apply soil incorporated herbicides
D. All of these
Answer: Option D
Solution(By Examveda Team)
All the statements given in the options are correct.A. Flat fan spray nozzles are widely used for broadcast spraying of herbicides and insecticides. These nozzles produce a tapered-edge, flat-fan spray pattern.
B. Flooding fan nozzle "turbo floodjet" is designed for use with soil-incorporated herbicides and liquid fertilizers.
These are ideal for high application rates and speeds because they produce a wide-angle. Operating flood-jet nozzles at 5 - 25 psi minimizes drift, but pressure changes critically affect the width of the spray pattern.
C. Cone nozzles is a low-drift nozzle and is used to apply soil incorporated herbicides.
Full cone nozzles produce medium- to large-size drops forming a solid cone-shaped spray pattern with a round impact area. The unique vane design features large flow passages to provide superior control and uniform distribution.
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The reduviid bug Sycanus collaris is a predatory of
A. Coconut rhinoceros beetle
B. Red palm weevil
C. Both A and B
D. Termites
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