This study wascarried out to analyze the tillering profile of Guinea grass (Panicum maximumcv. Tanzania) pastures subjected to two grazing frequencies (time necessaryto intercept 90 and 95% of the incoming light) and two post-grazing heights(30 and 50 cm) in the period from November 2005 to October 2006. The experimentaldesign was of completely randomized blocks with three replications, in a 2 ×2 factorial arrangement. At the end of the spring, pastures managed with 90%light interception showed greater tiller appearance rates in relation to pasturesmanaged with 95%, regardless of post-grazing height. In the summer and fall,pastures managed with post-grazing height of 30 cm showed higher tiller appearancerates in comparison with pastures managed at 50 cm, regardless of grazing frequency.Concerning the tiller mortality rates, in the summer, higher values were foundfor pastures managed at 90/50 and 95/30 (interception/height), intermediatevalues at 90/30 and lower values in those managed at 95/50. Pastures managedat 90/30, 95/30 and 95/50 in the fall presented greater tiller mortality ratesthan those managed at 90/50. These differences do not occur in the winter/beginningof spring. The stability index remained above 1 all through the experimentalperiod. All management strategies evaluated are adequate for Guinea grass.
