Question

A seed drill drops seeds at 0.20 m intervals. The seed weight is 200 g per 1000 seeds. If row to row spacing is 0.25 m, the weed rate in kg per hectare is ________

(a) 40

(b) 50

(c) 60

(d) 70

I got this question in a job interview.

Question is taken from Sowing Equipments in division Sowing Equipments of Farm Machinery

Answer 1

Correct answer is (a) 40

For explanation: Weight of 1000 seeds = 200 g

Weight of 1 seed = 0.2/1000 kg

Interval of seed drop = 0.20 m

Row to row spacing = 0.25 cm

Area = 0.20 * 0.25 = 0.05/10000 ha

Seed rate in kg/ha = \(\frac{0.2*10000}{1000*0.5}\) = 40 kg/ha.