The Pathogens and Lepidopteran Pests on Corn and Soybeans in the Transylvanian Plain

Abstract

In the climatic conditions in the Transylvanian Plain in corn usually occurs the following diseases and pests: cob rot strains ( Gibberella zeae f.c. Fusarium graminearum ) common smut ( Ustilago maydis ) and rust ( Puccnia sorghi ); Ostrinia nubilalis , Autographa gamma , Agrotis segetum , Agrotis ypsilon , Amathes c-nigrum, Heliothis armigera . In soybeans most common diseases are: bacterial blight ( Pseudomonas glycinea ), midlew ( Peronospora manshurica ) and mold ( Fusarium spp) and of harmful lepidoptera: Autographa gamma , Agrotis segetum , Agrotis ypsilon , Amathes c-nigrum , Mamestra brassicae and Mamestra suas. In the experimental fields of ARDS Turda in corn crop the most frequent disease was FHB and bacterial blight in soybean and the main pests found were the species Autographa gamma and Agrostis segetum.