Tayacaja

Editorial

Jorge Rafael Diaz Dumont — 2024-07-08

La Universidad Nacional Autónoma de Tayacaja Daniel Hernández Morillo, presenta el Vol. 6 Nro 1 (2023) de la Revista de Investigación Científica TAYACAJA, que es una publicación científica indexada, editada por la Vicepresidencia de Investigación y está orientada a la publicación de artículos científicos originales, en la especialidad de "Ciencias Forestales y Ciencias Agrarias", según las normas indicadas.

La Revista de Investigación Científica TAYACAJA es una publicación que cuenta con certificación ISO 9001-2015, es arbitrada y cuenta con ISSNe: 2617-9156. Está indexada a: LATINDEX (Catálogo 2.0), REDIB, CROSSREF, OCLC WORLD CAT, GOOGLE SCHOLAR, ROAD, LATIN REV, ALICIA, LA REFERENCIA, MIAR, AURA, OPEN AIRE, BASE, EZ3, ERIH PLUS. Así mismo, cada uno de los artículos publicados cuenta con DOI.

Biological control of Puto barberi (Hemiptera: Putoidae) with Orius insidiosus (Hemiptera: Anthocoridae) ex situ

Carlos Max Schoeneck López — 2024-08-09

This study evaluated the predatory capacity of Orius insidiosus on the mealybug Puto barberi on the campus of the University of Guayaquil, due to the presence of serious phytosanitary problems caused by this insect. Specimens of Orius insidiosus were collected for three months from a nursery at the Vinces Support Center, Los Ríos province, while mealybugs were obtained from ornamental plants (Ixora coccinea) in the green areas of the Ciudadela Universitaria. Trials were established using ½ liter plastic containers with sweet potato cuttings as refuge for O. insidiosus and Ixora coccinea cuttings for the mealybugs; to later introduce the predatory insects. Predation was evaluated at 24, 48 and 72 h. Statistical analysis showed no significant differences between treatments (p-value=0.65). However, it was observed that the percentage of predation accumulated by O. insidiosus (♀) was 31.5%, while for O. insidiosus (♂) it was 28.5%. It is concluded that O. insidiosus has potential as a biological controller of mealybugs, although it is recommended to validate these results under field conditions. In order to test the predatory capacity of O. insidious for mealybugs under controlled conditions.

Biological control of Puto barberi (Hemiptera: Putoidae) with Orius insidiosus (Hemiptera: Anthocoridae) ex situ

Cristian De La Torre Bendezú — 2024-08-19

The objective of the research was to carry out a diagnosis and propose silvicultural treatments in a plantation of Eucalyptus globulus Labill. The methodology was experimental. A census was carried out on 100% of the area (1 ha), which was divided into six subplots. In each subplot, quantitative and qualitative variables were evaluated. It was reported that 100% of the individuals corresponded to E. globulus Labill (1200 individuals). 11 diameter classes were reported, between 8 and 88 cm in diameter at breast height, of which 86.5% are between 8 and 50.99 cm, indicating that the plantation is not yet in the harvesting stage. Regarding the quality of the stem, 63.7% reported a straight stem; While in terms of phytosanitary status, 69.9% were in good condition, 21.8% reported mortality, 6.3% were shoots and 2% were leafless individuals, evidencing the need for treatments. Pruning treatments (1st, 2nd and 3rd) and thinning were proposed for 422 tree individuals to maximize the productivity of the plantation.