Efecto de la inoculación con rizobios procedentes de Sancti Spíritus, Cuba, en sorgo (Sorghum bicolor L. Moench), bajo condiciones de campo Effect of the inoculation with rhizobia from Sancti Spiritus, Cuba, in sorghum (Sorghum bicolor L. Moench), under field conditions

Abstract

Se realizó un experimento de campo, con el objetivo de determinar el efecto de las cepas de rizobios en las variables agronómicas de sorgo, bajo las condiciones ambientales de Sancti Spíritus, Cuba. Se utilizaron 12 cepas de Bradyrhizobium sp. procedentes de Sancti Spíritus, así como tres cepas de referencia pertenecientes a diferentes géneros y especies de rizobios. El diseño experimental fue de bloques al azar, con 17 tratamientos y cuatro réplicas. Se realizó análisis de varianza y las diferencias entre medias se hallaron por LSD de Fisher (pA field trial was conducted, with the objective of determining the effect of rhizobium strains on the agronomic variables of sorghum, under the environmental conditions of Sancti Spiritus, Cuba. Twelve Bradyrhizobium sp. strains from Sancti Spiritus were used, as well as three reference strains belonging to different rhizobium genera and species. The experimental design was randomized blocks, with 17 treatments and four replications. Variance analysis was made and the differences among means were found by Fisher's LSD (p<0,05). Aerial dry weight, stem length and ear length were evaluated. In addition, the increase of aerial dry weight in the inoculated treatments was calculated, as compared to the absolute control. The results proved the capacity of these strains to influence the studied agronomic variables, because there were treatments that statistically equaled their values to those of the fertilized control and showed an increase higher than 100% of aerial dry weight with regards to the absolute control.

Keywords

• Bradyrhizobium
• ecosistema
• inoculación
• sorghum
• Bradyrhizobium
• ecosystem
• inoculation
• sorghum