Análisis poblacional de nematodos en tres etapas productivas diferentes del cultivo de tomate de árbol (Solanum betaceum Cav) en el cantón Guachapala-Azuay

Abstract

The production of tree tomato Solanum betaceum Cav, has been largely affected by different phytopathogenic diseases. One of the diseases that causes damage to said crop is caused by nematodes, which is why it was decided to analyze the abundance of nematode populations present in the soil and root, at different depths and at three chronological ages of the crop, in the canton Guachapala province of Azuay. Soil samples were collected in tomato plantations in the initial stage, in the productive stage and in the final stage at 5 depths (5 cm, 10 cm, 15 cm, 20 cm, and 25 cm). Through this descriptive study, different situations could be evidenced, multiple linear regression models were used, and for the extraction of nematodes the Bearman funnel method was used. Through this investigation it was possible to know the number of nematodes, the species of phytopathogenic nematodes that predominated, being: Psilenchus spp, Helicotylenchus spp, Aphelenchus spp, Meloidogyne spp, Criconemoides spp, Xiphinema spp. And the distribution of the populations of nematodes present at different depths and in three chronological stages of the tree tomato crop being statistically significant.