Allied & ICAR Exam Bank • ALLIED_1056 NAT • 2 Marks

Section 2: Farm Machinery

Farm Machinery

Subtopic: Spraying and Plant Protection

Question Statement:

A tractor boom sprayer has 12 nozzles spaced 50 cm apart. Operating at a forward speed of 6.0 km/h and nozzle discharge rate of 0.8 L/min per nozzle, the chemical application rate in L/ha is:

Answer Key:

160

Step-by-Step Solution & Explanation

Total boom width $W = 12 \times 0.50\text{ m} = 6.0\text{ m}$. Total discharge $Q = 12 \times 0.8 = 9.6\text{ L/min} = 576\text{ L/h}$. Field speed $V = 6.0\text{ km/h}$. Area covered per hour $= \frac{W \times V}{10} = \frac{6.0 \times 6.0}{10} = 3.6\text{ ha/h}$. Application rate $= \frac{576\text{ L/h}}{3.6\text{ ha/h}} = 160\text{ L/ha}$.
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