Evaluación de productos químicos y orgánicos para el control de la “Muerte súbita” Rosellinia sp. en Macadamia integrifolia Maiden & Betche, “Macadamia” Proteaceae en finca La Viña, El Palmar, Quetzaltenango.

Gómez De León, . Raúl Antulio (2023) Evaluación de productos químicos y orgánicos para el control de la “Muerte súbita” Rosellinia sp. en Macadamia integrifolia Maiden & Betche, “Macadamia” Proteaceae en finca La Viña, El Palmar, Quetzaltenango. ["eprint_fieldopt_thesis_type_engd" not defined] thesis, USAC.

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Abstract

SUMMARY Finca La Viña, is dedicated to the production of different crops, however, as the main crop is the macadamia nut Macadamia integrifolia Maiden & Betche Proteacea, with trees in production and growth. However, this crop has different types of diseases, which do not help to improve production, highlighting the disease "sudden death" which is caused by different types of fungi in the soil, being the fungus that stands out the most Rosselinia sp. To avoid this problem, the present investigation was carried out, which consists of evaluating chemical products (Prevalor, Cabrio team, Phyton, Uniform, Viusid, Raizal) and biological products (Serifel, chemical package, package, agrisafe, cutter package). In which six readings were taken to evaluate the increase in the percentage of healthy trees, the first reading being before the first application and then there were 5 monthly readings, which were taken at 20 da. In the same way, a study of the percentage increase of new foliage shoots was carried out, based on the net plot. By means of the established readings, an analysis of variance of the experimental design of completely random blocks was used, through the results obtained from the ten evaluated treatments that were made up of the applications of chemical and biological products. In which, by means of a multiple test of means for the response variable, increase of healthy trees, there was no significant difference between any of the treatments, but for the response variable, percentage of new foliage shoots, by means of a multiple test of Tukey means at 5%, It was demonstrated that the biological products (chemistry package, agrisafe package and Cortázar package) had a percentage above 30% of increase, highlighting of these three the products evaluated by means of the agrisafe package with 33% new shoots of foliage, could indicate a recovery of the trees to the attack of Roselinia sp.

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