Efecto de dos concentraciones de tres formulados en base a Bacillus subtilis en el desarrollo de lechuga (Lactuca sativa L.) en invernadero.

Abstract

The objective of this research work was to evaluate the effect of two concentrations of three formulations based on Bacillus subtilis on the development of lettuce Lactuca sativa L. Batavia variety in a greenhouse in Riobamba canton, Chimborazo province. The treatments evaluated were: LSSC1, LSC1, CNC1, LSSC2, LSC2, CNC2, and the Control, using a randomized complete block design with six treatments and three replications distributed in the space of 1.6 m wide by 6.5 m long. It was placed each one of the treatments and their respective replications, randomly selecting 32 plants from each treatment for data registrations. Parameters such as apprehension percent, seed vigor, plant height, plant fresh weight, plant dry weight, and the yield of the commercial part of the lettuce plants in g/m2 were evaluated, and an economic analysis was performed using the benefit/cost ratio. In the laboratory, the number of bacteria per milliliter was counted using the Neubauer chamber. The best result was obtained with the application of treatment LSSC1 in the variables height, weight, and yield in comparison with the rest of the treatments because this treatment reached an average height of the aerial zone of 15.91 cm, an average root length of 23.24 cm, an average fresh weight of 78.16 gr, an average dry weight of 6.77 gr, and a yield in g/m2 of 3183.53. It was concluded that the application of treatments formulated with Bacillus subtilis had a significant influence on the height, weight, and yield of Batavia lettuce plants concerning the Control plants. It is recommended to carry out studies on different crops.