288 Pitahaya Stem rot Disease Xanthomonas campestris, Fusarium oxysporium, Pantoea sp., Erwinia caratovora Yellowing of tissues followed by softening and smelly rotting of tissues. Advanced attack showed total rotting of fleshy succulent parts of stem leaving the main veins intact. Pruning of infected parts, Copper compound sprays and nutrition. 8,858