Validación de un bioinoculante a base de bacterias diazotróficas en el crecimiento, desarrollo y rendimiento agrícola de (phaseolus vulgaris L.)

This research was conducted in order to evaluate the effect of a Biological Inoculum based on symbiotic bacterial diazotrophs on morphological parameters, biomass and crop yield in the cultivation of the 60 ball common bean. The research took place in the filed within the San Jose-Catamayo, and used a randomized block design with 2 treatments and 4 repetitions. At 8, 15 and 21 days after sowing (DAS), evaluation of the morphological parameters was performed based on height (cm) and the number of leaves per plant. At 30 and 60 days (DAS), the nodulation, and biomass parameters as well as crop yield were also evaluated. Physical, chemical and microbiological analyses were performed at both the beginning and end of the experiment. With respect to the economic analysis this was carried out using mean values adjusted in terms of yields, costs and revenues obtained according to the treatment throughout the crop cycle. As to the nodulation and biomass parameters together with the yield components and total agricultural yield this manifested an increase after the Biological Inoculum of average values of 6.92 t ha-1 compared to the control of 4.59 t ha-1. Likewise, the percentage of total nitrogen also increased with the application of the Biological Inoculum to 3.05% and 3% in both fresh and dry weight. The soil physical properties remained the same, both at the beginning and end of the experiment. In addition, the chemical properties where the application of Biological Inoculum took place positively contributed to the reduction of alkaline in the soil pH, and increased organic matter and nitrogen. The results obtained with respect to microbiological analyses showed a positive effect on the increase in the microbial load for bacteria at the end of the experiment. The economic analysis reported a marginal rate of return for treatment using the Biological Inoculum at 845.90% compared to the control. The marginal net benefit ratio to marginal costs / treatment demonstrated that the producer using the Biological Inoculum for every $ 1.0 invested in this biological product, would make a profit of $ 8.45, thus the cost-benefit (C / B) was $ 6.97 for the use of the Biological Inoculum and $ 2.90 with respect to the Control.

• Glavni autor: García, Diana Carolina (author)
• Format: bachelorThesis
• Jezik: spa
• Izdano: 2015
• Teme: BIOINOCULANTE; BACTERIAS DIAZOTRÓFICAS; FRÉJOL; PHASEOLUS VULGARIS L.; BIOFERTILIZANTES; FIJACIÓN DEL NITRÓGENO
• Online pristup: http://dspace.unl.edu.ec/jspui/handle/123456789/10029