Dry matter, crude protein yields and chemical compositions of 6-week old grass which are affected
by sulfur fertilizer applications are shown in Table 4.CP concentration was strongly influenced by sulfur application. It was also observed that CP yield and CP concentration of 6-week old grass had increased with the increasing level of sulfur fertilizer application (Linear, p=0.0010 and p=0.0012,
respectively). Surprisingly, CP content had increased to 134.75 and 168.03% comparing to the control when sulfur fertilizer was applied at 12 and 24 kgS/rai,respectively. Ahmed et al., 1995 reported nitrogen concentration of forage sorghum (Sorghum bicolor L.) had increased from 1.47 to 1.55% when 138 kgS/ha (equilibrium to 22.08 kgS/rai) was applied.