Impact of climatic variables on sugarcane stem borer (Scirpophaga excerptalis) infestation in Thakurgaon District, Bangladesh

Sugarcane (Saccharum officinarum) is a vital cash crop worldwide, contributing significantly to the economy and agro-industrial sector. However, its productivity is severely affected by the sugarcane stem borer (Scirpophaga excerptalis), one of the most destructive pests in sugarcane cultivation. Climate change, particularly variations in temperature, humidity and rainfall, has been identified as a major factor influencing the population dynamics and infestation severity of this pest. This study investigates the impact of key climatic variables on sugarcane stem borer infestations in Bangladesh. A comprehensive field survey was conducted across multiple agro-ecological zones and data were collected on pest incidence, temperature fluctuations, humidity levels and rainfall patterns. Statistical analysis revealed a strong correlation between increasing temperatures and higher infestation rates, with peak pest activity observed in regions experiencing prolonged warm and humid conditions. Additionally, erratic rainfall patterns influenced the reproductive cycle of the borer, leading to unpredictable outbreaks. The findings highlight the need for climate-resilient pest management strategies, including integrated pest management (IPM) techniques, resistant crop varieties, and climate-adaptive farming practices. This study emphasizes the importance of monitoring climatic trends to predict pest outbreaks and develop proactive control measures. By incorporating climate-smart agricultural practices, farmers can mitigate the adverse effects of environmental changes on sugarcane production.