SCIENCE CITY OF MUÑOZ (PIA) — The Philippine Rice Research Institute (PhilRice) encourages farmers to closely monitor rice fields for four pests that pose a serious threat to rice crops.
Pests such as rodents, rice stemborers, brown planthoppers, and rice bugs can cause significant crop losses if not properly managed.
PhilRice crop protection expert Leonardo Marquez said rodents pose the highest threat due to their destructive feeding habits throughout all growth stages of the rice crop.
“A single rodent can damage up to 300 tillers in one night, potentially resulting in yield losses of up to 90 percent in heavily infested fields,” Marquez explained.
He emphasized that regular field monitoring and timely pest control are crucial, especially during this stage of the cropping season.
Marquez said that even a small amount of negligence can lead to a severe infestation, which can compromise both the yield and quality of crops.
In addition to rodents, the rice stemborer is a persistent issue in rice fields, causing “deadheart” and “whitehead” symptoms that reduce grain development.
Brown planthoppers, which thrive in nitrogen-rich environments, suck sap from the plants, causing a condition known as hopperburn that can lead to the premature death of the plants.
Furthermore, rice bugs target ripening grains, resulting in empty or discolored grains.
Marquez also highlighted the importance of integrated pest management strategies such as synchronized planting within the community, controlled use of nitrogen, and crop rotation.
He cautioned farmers against the excessive use of insecticides, as improper application can lead to pesticide resistance and disrupt populations of beneficial insects.
Farmers are encouraged to reach out to their local agricultural offices and consult with extension workers for support in pest monitoring and management.
PhilRice urged farmers to closely monitor their fields for signs of pests that are expected to infest and appear in rice-growing areas until the third quarter of the year. (CLJD/CCN, PIA 3-Nueva Ecija)
