Elena Trotuș1, Raluca Zaharia2, Paula-Lucelia PINTILIE3, Roxana-Georgiana AMARGHIOALEI4, Alexandra-Andreea BUBURUZ5
Abstract. The harmful entomofauna of winter rapeseed crops, monitored between 2000–2024 at Secuieni Agricultural Research and Development Station-SCDA, recorded average population densities ranging from 1,207 to 3,510 individuals/m². The highest abundance was observed during the early development stages of the crop—germination, emergence, and rosette formation—followed by budding/flowering. Lower values were recorded during the phenological stages of pod formation, stem elongation, and maturation. The pests belonged to six systematic orders, with the order Coleoptera being predominant (64–72% of all collected specimens). The carabid beetle (Carabidae) community in rapeseed crops included 14 species from 6 subfamilies, with annual variations. The subfamily Pterostichinae dominated in terms of diversity (42.87%), while Harpalinae had the highest number of individuals (46.91%). The species Harpalus aeneus had the highest proportion (36.08%), and Calathus melanocephalus the lowest (0.21%). Based on these studies, it can be concluded that the pest entomofauna was represented by 18 to 25 species, while the beneficial entomofauna consisted of 10 to 14 species, with average densities ranging from 301 to 637 individuals/m².
Keywords: rapeseed, pests, ecological parameters, entomofauna
DOI 10.56082/annalsarsciagr.2025.2.56
1Senior Researcher I, PhD, Full member of The Academy of Agricultural and Forestry Sciences “Gheorghe Ionescu-Şişeşti”, Field Crops Section, Associate Member of Academy of Romanian Scientists. (e-mail: etrotus@yahoo.com)
2PhD student, “Ion Ionescu de la Brad” Iași University of Life Sciences, Iași, Romania. (e-mail: raluca.zaharia@iuls.ro)
3Researcher II, PhD, Secuieni Agricultural Research and Development Station, Secuieni, Neamț County, Romania.
4Researcher, PhD, Secuieni Agricultural Research and Development Station, Secuieni, Neamț County, Romania.(e-mail: georgyana_roxana96@yahoo.com)
5Researcher III, PhD, Secuieni Agricultural Research and Development Station, Secuieni, Neamț County, Romania.(e-mail: alexandra_andreea_83@yahoo.com)
PUBLISHED in Annals of the Academy of Romanian Scientists Series Series on Agriculture, Silviculture and Veterinary Medicine, Volume 14, No2