Efecto del cultivo mixto de bacterias y levaduras sobre las características físicoquímicas y biomasa de Rye grass (Lolium multiflorum) en Andisoles, parroquia Columbe cantón Colta.

Abstract

The objective of this research work was to evaluate the effect of mixed bacterial culture and yeasts on physicochemical characteristics and biomass of Rye Grass (Lolium Multiflorum) in andisols in Columbe parish, Colta canton. It implemented a randomized complete block design with four treatments and four replications; the experimental results were subjected to analysis of variance and separation of means with Tukey's test. The doses used were 10%, 20%, and 30%. The following parameters were evaluated; within the edaphic parameters: pH, texture, percentage of organic matter, carbon-nitrogen ratio (C/N), and natural microbiota; within the agronomic parameters, the following were evaluated: grass height in each of its phenological phases, biomass production in the dry and wet state in Kg/ha, and the economic analysis through the benefit-cost ratio. As a result, the best edaphic parameters were obtained with a pH of 5.73; a loam texture and a sand content of 37%, 47% silt, and 16% clay; a carbon-nitrogen ratio of 14.11, and a good microbiological quality. Among the agronomic parameters, the best result concerning plant height in the initial phase was 6.94 cm, in the growth phase with 66.16 cm, and the flowering phase with 86.27 cm, with a yield of 28500 kg of fresh matter/ha and 6650 kg of dry matter/ha, yielding a benefit-cost ratio of 1.95, corresponding to 94.59% profitability. It was concluded that treatment three was the best because it showed outstanding results in the development of the grass, so it is recommended to use this alternative using the dosage mentioned above.