Yield losses in ginger ( Zingiber officinale Rosc.) and turmeric ( Curcuma longa L.) due to root knot nematode ( Meloidogyne incognita )

Soil application of carbofuran @3 kg a i /ha 3 weeks after planting resulted in avoidable yield losses to the extent of 33.61 per cent in turmeric ( Curcuma longa L.) and 26.30 per cent in ginger ( Zingiber officinale Rosc.) due to Meloidogyne incognita. Gall index values were correspondingly high in control plots compared to treated ones in both ginger and turmeric.