Field surveys were conducted in three oil palm producing regions of Ghana to determine the frequency, population density and geographical distribution plant parasitic nematodes associated with palm. Palms ranging from 4 12 years surveyed during peak periods two successive cropping seasons 2019 2020. A total 64 soil root samples collected extracted identified them. 716 mixed populations 11 econo...

Pineapple, Ananas comosus (L.) Merr., is a perennial, xerophytic monocot in the Bromeliaceae family (13). Planting materials used for commercial production are typically the crown from the top of the fruits (19). The planted crowns, referred to as the plant crop, will each produce a single pineapple fruit 18 to 20 months after planting (19). Following plant crop harvest, a ratoon crop develops ...

Hirsutella rhossiliensis is a parasite of juvenile nematodes, effective against a diversity of plant-parasitic nematodes. Its global distribution on various nematode hosts and its genetic variation for several geographic regions have been reported, while the global population genetic structure and factors underlying patterns of genetic variation of H. rhossiliensis are unclear. In this study, 8...

A new subfamily, Pararotylenchinae, (Hoplolaimidae) is described. It includes a single genus, Pararotylenchus n. gen., six new species, attd two new combinations, Pararotylenchus (syn. Tylenchorhynchus) brevicaudatus (Hopper, 1959) n. comb. and Pararotylenchus (syn. Rotylenchus) pint (Mamiya, 1968) n. comb. Pararotylenchinae is similar to certain other Hoplolaimidae, such as Rotylenchinae, with...

Effects of live and dead (heat-killed) infective juveniles (IJs) of the entomopathogenic nematode Steinernema carpocapsae on nematodes associated with boxwood Buxus spp. were evaluated in field experiments during 1999 and 2000. Both living and dead IJs of S. carpocapsae were equally effective, causing more than 50% reduction in total populations of plant-parasitic nematodes relative to the cont...