Further studies on the control of ratoon stunting disease of sugarcane in the N.W.F.P.
Application of ammonium sulfate to sugarcane crops resulted in 22.89% reduction in ratoon stunting (caused by Clavibacter xyli subsp. xyli) and yield increases of 29.09 and 2.91 t/ha, in cane and white sugar, respectively. Hot water treatment at 50°C for 2 h resulted in 41.18% reduction in disease and yield increases of 31.15 and 5.07 t/ha, in cane and white sugar, respectively. Application of streptomycin at 1000 p.p.m. and hot water treatment at 52° for 30 minutes suppressed disease by 22.6% and increased yields of cane and white sugar by 35.54 and 4.55 t/ha, respectively.