Comportamiento de caracteres morfofisiológicos de Sorghum bicolor (L.) Moench cv. UDG-110, luego de la aplicación de alternativas de fertilización biológica

Abstract

Objective: To characterize the agronomic performance of Sorghum bicolor (L.) Moench cv. UDG-110 under field conditions with the application of biological fertilization. Materials and Methods: Six treatments were evaluated: I-control without fertilizer, II-Agromenas G- 1,5 t/ha, III-earthworm humus - 4,0 t/ha, IV-Agromenas-G 1,5 t/ha + FitoMas-E® L/ha, V-earthworm humus 4,0 t/ha + FitoMas-E® L/ha, VI-absolute control with complete formula (140 kg). The productive indicators plant height, stem diameter, total biomass weight, panicle length and width were evaluated. Data were processed through a simple variance analysis for 5 % significance. Results: There was no statistical inequality for the variable plant height among treatments III, V and VI, but they differed from the others, with values of 1,23, 1,24 and 1,23 m, respectively. The greatest length occurred with treatments III (18,4 cm) and VI (17,6 cm), which did not differ from each other. There were also no differences between VI and V. Similar performance occurred among treatments II, IV and I, the last one being the shortest (13,8 cm). When comparing the total biomass weight, the best result corresponded to VI. However, the treatments to which organic fertilizers were applied (II, III and IV) obtained values of 0,14 kg and exceeded the control without fertilization (0,12 kg). Conclusions: Biological fertilization is a viable option for the production of S. bicolor cv. UDG-110. The most effective biological fertilization alternative was earthworm humus. It was followed by the combination of humus plus FitoMas-E®. In turn, yield indicators were not affected by the use of the biological fertilization alternatives.

Keywords

• alternative agriculture
• biomass
• humus