Reconocimiento de malezas presentes en el huerto de guayabo (Psidium guajava L.) tipo Criolla Roja, del Centro Frutícola del Zulia, Municipio Mara, Venezuela

An inventory of weeds associated with guava (Psidium guajava L.) type Criolla Roja at the experimental orchard of the Centro Fruticola of Zulia (CENFRUZU/CORPOZULIA) (10o49’98’’ LN y 71o46’33’’ LW), Mara Co., Venezuela, was carried out to identify the weeds to family, genus and species level and their frequency of appearance. Two hundred and twenty six (226) specimens of angiosperm weeds in 21 families, 44 genera and 67 species were collected. The family Poaceae (Graminae) was the most diverse with 9 genera and 12 species, followed by Malvaceae and Fabaceae (3 genera and 6 spp. each one), Amaranthaceae and Euphorbiaceae (3 genera and 5 spp. each one), Convolvulaceae (4 genera and 5 spp.), Sterculiaceae (2 genera and 4 spp.), Boraginaceae, Nyctaginaceae and Rubiaceae (1 genus and 3 spp. each one). The most common weeds according to their frequency of appearance were Boerhavia erecta, Euphorbia hirta, Heliotropium indicum, Anthephora hermaphrodita, Sida acuta, Mollugo verticillata , Merremia glabra, Portulaca oleracea y Tribulus cistoides. This information is a basic reference and fundamental to evaluate alternatives and strategies of management of the weeds in this crop.