پایش آفات درختان صنوبر در غرب گیلان

Monitoring trees over the years has demonstrated that pest and disease surveillance and prevention can significantly contribute to pest control. The primary objective of monitoring programs is to ensure ecosystem health, mainly based on the early detection of pests and diseases. At this stage, damage is still confined to small areas, and no severe impacts have occurred. Accordingly, to maintain the health of fast-growing poplar stands, this research focused on monitoring poplar tree pests and diseases in the western part of Guilan Province. Methodology was descriptive-analytical and included various phases such as literature review, field studies, and laboratory work. Field operations were conducted during the growing seasons from 2019 to 2022, followed by laboratory studies. The study area encompassed poplar plantations in the western Guilan Province. Results indicated that the most significant pests in the poplar stands of western Guilan, ranked by infestation percentage, were Melampsora popoli (Pres.) Lev., Hyphantria cunea Drury, Paranthrene tabaniformis von Rottemburg, Monosteira unicostata Mulsant & Rey, Sleraunematus compressicornis F., and Nycteola asiatica Krulikowsky. The intensity and diversity of pest infestations showed no substantial differences over the years 2019 to 2022, with only a slight increase in infestation percentage observed in 2021. Additionally, two pests, the corn stem borer and forest tree root borer, were observed on young poplar seedlings in 2022. This is the first report of these pests on poplar trees, indicating the need for annual monitoring and suggesting strategies for effective management against these pests.