Two early maturing varieties( CoS 08272, Co 0238) and two late maturing (CoS 08279,Co 05011) sugarcane varieties were tested for post-harvest changes in reducing sugars,studied (0-240 hrs) during late (maturing) milling period due to various leaf extracts sprays such as Harvested cane (T₁) control, Neem leaf extracts (T₂),oxalis leaf extracts (T₃), Castor leaf extracts (T₄), Jatropha leaf extracts (T₅), Clereodendron (T₆), Argemone leaf extracts (T₇), Datura leaf extracts (T₈), Oxalis leaf extracts (T₉) applied just after cane cut. There was gradual significant increase (>90%) in reducing sugars content as a result of delay in cut to crush period, upto 240 hrs. The impact of lantana leaf extracts (T₅) was noted most effective in minimizing reducing sugars formation followed by oxalis leaf extracts (T₉), Jatropha leaf extracts (T₄) and Neem leaf extracts (T₂). Variety Co 5011significantly respoded best.