On March 27, 2025, the SRI Global Research Network hosted an insightful session in its webinar series titled “Insect Diversity and Dynamics in System of Rice Intensification (SRI) Cultivation.” This webinar featured a speaker with extensive experience, Padmavathi Chintalapati from ICAR-Indian Institute of Rice Research, India and was moderated by Ram B. Khadka from Nepal Agricultural Research Council–National Plant Pathology Research Center, Nepal.
Padmavathi Chintalapati presented extensive research findings from long-term and multi-location studies comparing SRI and conventional rice cultivation methods. Her presentation highlighted how SRI practices influence insect pest populations, showing notably lower incidences of major pests such as brown planthopper and yellow stem borer under SRI conditions. She emphasized that wider spacing, better aeration, higher silica and cellulose content in SRI-grown plants, and enhanced populations of natural predators contribute to these reductions.
The session also discussed increased biodiversity observed in SRI fields, supported by data from field experiments and meta-analyses. While some pests like leaf folder and thrips showed slightly higher presence in SRI systems, the overall pest impact was lower, and grain yields were consistently higher under SRI management.
A key takeaway from the session was the recognition that SRI not only supports sustainable pest management but also enhances ecological resilience. Padmavathi Chintalapati emphasized the potential for integrating SRI with other ecological practices and the importance of continued research on pest dynamics, biodiversity, and scaling strategies.
Ram B. Khadka, who moderated the session, brought valuable perspective as a plant pathologist and research leader in Nepal. His thoughtful facilitation encouraged rich discussion and helped frame Chintalapati’s findings in the broader context of regional agricultural challenges and innovations. He also engaged participants with insightful questions.
The webinar drew participation from over 50 researchers and practitioners globally, sparking active discussion on topics ranging from IPM practices to the potential for water or carbon credits linked to SRI.
For those who were unable to attend the live session, the full recording is available on YouTube and can be accessed below. Stay updated on future events and publications by subscribing to our newsletter at sri-research.org.
