CONCLUSION
Harvesting three leaves 20 DAE (growth stage 2) and no defoliation treatments on sorghum plant recorded the highest values for vegetative dry matter, leaf area and seed weight. Defoliation treatments had no effect on plant height and stem diameter of the sorghum plant. Therefore, based on the findings farmers are urged to guard against late defoliation on the development of the sorghum plant since this will impact negatively on the yields and to some extent compromise the plant growth with regard to leaf area and vegetative dry matter.