Allied & ICAR Exam Bank • ALLIED_1054 NAT • 2 Marks

Section 2: Farm Machinery

Farm Machinery

Subtopic: Seeding and Planting Equipment

Question Statement:

A 9-row seed drill with row-to-row spacing of 20 cm is tested in a calibration trial. The drive wheel diameter is 60 cm. During 100 revolutions of the drive wheel, the seed collected in all bags is 2.16 kg. The seed rate in kg/ha is:

Answer Key:

63.7

Step-by-Step Solution & Explanation

Width of machine $W = 9 \times 0.20 = 1.8\text{ m}$. Distance travelled in 100 revs $L = 100 \times \pi D = 100 \times \pi \times 0.60 = 60\pi \approx 188.5\text{ m}$. Test area $A = 1.8 \times 188.5 = 339.29\text{ m}^2$. Seed rate $= \frac{2.16\text{ kg}}{339.29\text{ m}^2} \times 10,000\text{ m}^2/\text{ha} = 63.66\text{ kg/ha}$.
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