Before sowing, Onion seed should be treated with thiram @ 2 g/kg of seed to avoid damage from damping off disease. The soil of nursery should also be treated with thiram or captan @ 4-5 g/ m² area. The nursery beds should be irrigated 15-20 days before sowing and covered with 250 gauge transparent polythene for soil solarization. Application of Trichoderma viride @ 1,250 g / ha is also recommended to manage damping off and raise healthy seedlings.

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