First report of root-knot nematode, Meloidogyne incognita, infecting hops, Humulus lupulus, in São Paulo, Brazil

Abstract

In 2019, during a nematologic survey in Jaboticabal, Brazil, root-knot nematode Meloidogyne incognita parasitizing hops ( Humulus lupulus ) was identified with based on morphological characters of adults, esterase phenotypes ( n = 16), and molecular analysis. Modified Koch’s postulates was carried out and after 90 days, the average total population recovered had different stages of development, with a reproductive factor (RF) of 4.81. This is the first report of H. lupulus as a host of M. incognita in the state of São Paulo and in Brazil.

First report of Paramyrothecium foliicola causing leaf spots on hop

“…However, during the last decade, attempts at hop cultivation in Brazil have been successfully initiated (Durello et al 2019;Pinto et al 2022). As the cultivated area expanded, so unreported diseases started to appear, namely: root knot nematode (Gonsaga et al 2021), powdery mildew (Fagherazzi et al 2021), Fusarium canker (Pinto et al 2022) and, recently, Cercospora leaf spot (Pereira et al 2022).…”