Affiliation:
1. Estación Experimental Central de la Amazonía, Instituto
Nacional de Investigaciones Agropecuarias, La Joya de los Sachas,
Ecuador
2. Tesista, Escuela Superior Politécnica de Chimborazo, Extensión
Norte Amazónica
Abstract
Yellow pitahaya in the Ecuadorian Amazon has become one of the most
important economic crops in the region. However, the presence of pests
(nematodes) in the soil has caused up to 100% of the crop's growth stages to
be affected. Faced with this problem, growers use various chemical
nematicides that minimize this impact but cause contamination problems. For
this reason, the objective of the research was to evaluate microorganisms
that control or reduce the population of Meloidogyne incognita in the
pitahaya crop at the greenhouse level. The design was DBCA, and the
statistical analysis was performed with the statistical package Infostat
2017, using linear mixed models and Fisher's tests at 5%. The results show
that root nodules decrease when P. lilacinum + T. asperellum is applied
after nematode injection (261). In addition, the lowest number of
nodulations (251) was obtained when microorganisms were applied after
nematode inoculation (251 nodulations). Still, when microorganisms were used
before, aerial biomass growth was stimulated (384.17 g) even when nematodes
were present in the root system. Keywords: microorganisms; nematodes;
pitahaya.
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