Distribution and Abundance of Nematodes in Horticultural Production in Paraguay

• DOI: 10.1094/php-01-22-0001-s
• Publication Date: 2022-06-30T13:33:15Z
• Authors: Horacio D. Lopez-...; Guillermo Andrés ...; Gabriela Giuliana...; Andres Dejesús Sa...; Andrés José Arman...; Laura Concepción ...; Cristian Javier G...; Gloria Arminda Re...; Adans Agustín Colmán; Lidia Margarita P...; Hugo Néstor Valie...; Francisco Alberto...; Victor Ruiz-Zastrow; Martín Maria Cubi...
• Keywords: Helicotylenchus; Xiphinema; Pratylenchus; Edaphic

In Paraguay, there is no information describing the distribution and abundance of plant-parasitic nematodes other free-living from vegetable farms. The objectives this study were to determine prevalence on farms, evaluate relationship between ecological diversity, edaphic factors nematode communities. Vegetable farms ( n = 217) across nine departments in Paraguay included survey, soil samples collected March September 2021. More than 10 genera identified survey are presented as follows decreasing order prevalence: Helicotylenchus (0 2,000 nematodes/100 cm 3 soil), Meloidogyne 4,120), Criconemella 400), root-related Tylenchidae Pratylenchus 280), Tylenchorhynchus 200), Trichodorus 40), Rotylenchulus 1,800), Hoplolaimus 20), Xiphinema 80), Scutellonema 1,000), Criconema 24), Hemicycliophora 20). was most abundant highlighting potential threat pathogen horticultural production Paraguay. Nematodes separated into five trophic groups depending their feeding habits. Diversity estimated using Shannon's diversity index, which inversely related nematodes. Additionally, (physical-chemical properties) evaluated. Soil texture significantly associated with abundance. This a first step aid local growers developing sustainable economic agricultural systems.