Asian Research Journal of Current Science

This study aimed to determine the optimal harvesting age for three sugarcane varieties and to assess the changes in yield and quality at different harvesting ages. It was conducted at the Sugarcane Research Farm in Pyinmana and Nyaungpintha, Myanmar, from December 2023 to January 2025.  The results indicated a similar number of millable canes across all varieties; however, significant differences were observed in single cane weight, cane yields, and sugar yields among the varieties. PMA-7 (92.56 t ha^-1) achieved the highest yield in Pyinmana, whereas PMA-9 (89.90 t ha^-1) performed best in Nyaungpintha. All varieties demonstrated comparable quality parameters at each location. Regarding harvesting ages, the 13-month age (H₃) tended to produce higher yields at both sites. Additionally, there were quality parameters improved consistently at 13 months. In conclusion, the sugarcane varieties showed differing cane and sugar yields, while harvesting ages had a notable impact on quality parameters in both Pyinmana and Nyaungpintha. PMA-7 consistently produced higher cane and sugar yields in Pyinmana, while PMA-9 showed superior performance in Nyaungpintha.  All quality parameters improved when harvesting ages were extended from 11 to 13 months. It is suggested that the tested sugarcane varieties should be harvested at 13 months of age for optimal results. This manuscript provides valuable insights on how harvest timing influences sugarcane yield and quality. Its findings guide farmers and policymakers in improving productivity and sustainability in sugarcane production.