Integrated management of bacterial wilt of tomato.
Field experiments were conducted with tomato during 1999-2000 and 2000-01 in a bacterial wilt-sick field in Ranchi, Jharkhand, India, involving 10 treatments for the management of tomato bacterial wilt (caused by Ralstonia solanacearum), i.e. bleaching powder (30 kg/ha), Karanj (Pongamia glabra [P. pinnata]) cake (60 kg/ha), Streptocycline (200 ppm) root dip for 12 h, Trichoderma viride (2 g/plant), Streptocycline root dip+spray, Karanj cake+bleaching powder (30+15 kg/ha), bleaching powder+Streptocycline root dip (15 kg/ha+200 ppm), Karanj cake+Streptocycline root dip (30 kg/ha+200 ppm), Karanj cake+bleaching powder+Streptocycline root dip (20 kg+10 kg/ha+200 ppm), and control. The majority of interactions were superior over individual treatments. The interactions of Karanj cake, bleaching powder and seedling root dip in Streptocycline was the most effective treatment as significantly minimum wilt incidence was recorded at 60, 90 and 130 days after transplanting along with the highest fruit yield during both years. The next effective treatment was Karanj cake+bleaching powder. The seedling root dip in Streptocycline was the least effective treatment.