Dehaulming

The recommended dehaulming schedule is based on region specific aphid population and must be adopted to get virus free seed potato production.  Dehaulming in Punjab, Haryana and North-Western plains should be carried out in last week of December.  The dehaulming in Rajasthan, western Uttar Pradesh and Central plains must be completed in first week of January while in eastern Uttar Pradesh, Bihar, West Bengal and Orissa the seed crop must be dehaulmed in second week of January.  The seed potato grows can adjust dehaulming time on the appearance of critical aphid population i.e. 20 aphid/100 compound leaves subject to availability of 70-75 days crop growth period to get seed size tubers.