WUE Napier grass have not influence of drought stress (Table 1). Increasing drought stress have not significant
difference to WUE. WUE of Guinea grass decreased with increasing period of drought stress (control to DS258) about 31.42%. There was means Napier have more resistant to drought than Guinea grass. Drought stress applied Guinea and Napier grasses have significant difference in plant height. Plant growth parameters of plant height and tiller per pot decreased with the drought stress treatment given. Tiller number of Napier tend decreased with period of drought stress increased, but have not significant difference. Application drought stress treatment on Guinea did not decreased tiller per pot. The establishment of tiller affected the nature of immortality, row spacing and environment factors as light, temperature and soil fertility. Lack of water decreased tiller number and plant height as growth parameter. Value of Duncan multiple range test (DMRT) of tiller per pot at P