Covers are gradually thinned or removed from the day when the seedlings appear on the surface as otherwise the seedlings may become etiolated and lanky for want of sunlight. It is also advantageous to transplant the seedlings from one to another bed i.e., resetting, when they are 3 to 4 weeks old in order to ensure sturdy growth of seedlings by the time of planting. A week to ten days before planting, the seedlings are hardened by withholding water. Such seedlings withstand the shock of transplanting better than normal seedlings.
Acharya Narendra Deva University of Agriculture and Technology 1