Pest host weeds in tobacco (Nicotiana tabacum, L) in Las Tunas, Cuba

Abstract

With the purpose of determining the weeds and the pests that are hosted in them, in the tobacco crop, the research was carried out in seedbed, plantation and guardrail areas of a farm belonging to the CCS "35th Anniversary of Anap", Las Tunas. The samples with pest symptoms were analyzed in the diagnostic specialties of the Provincial Laboratory of Plant Health. Twenty-two species of weeds were determined. Five species of insect pests, one mite, three phytonematodes and three phytopathogenic fungi were determined. The arvense plant species that hosted the greatest diversity of pests was A. dubius. Aphelenchus sp. was a common pest of arvenous plant species. P. oleraceae was the most frequent. Aphelenchus sp. was the most frequent with 26.22 %, followed by Tylenchus sp. and Oidium sp. with 13.04 % frequency of occurrence each, the rest of the pests were infrequent. Aphelenchus sp. on E. heterophylla and Tylenchus sp. on A. dubius are new reports for these species of arthropods in the tobacco crop in Las Tunas. The rest of the identified pests are new reports for Las Tunas on the identified weeds.