The journal AGRICULTURA (A) publishes scientific works from the following fields: animal science, plant production, farm mechanisation, land management, agricultural economics, ecology, biotechnology, microbiology...
ISSN 1580-8432
5.
Long term survivability of Azospirillum co-aggregates: Bioinoculation effect on the growth and yield of sunflower
Manoharan Melvin JOE, Palanivel Karpagavinayaga SIVAKUMAAR pp. 70-76
Azospirillum brasilense
AZP-18 was co-aggregated with other Plant Growth Promoting Rhizobacteria (PGPR), such as Azotobacter chroococcum MTCC-2805, Azorhizobium caulinodans ORS-571, Bacillus megatherium MTCC-3353 and Pseudomonas fluorescens MTCC-4828. These different combinations of Azospirillum coaggregates were studied for their long-term survival efficiency in vermiculite. Among the different combinations the combination of Azospirillum with Azotobacter showed the highest survival efficiency. The different combinations of Azospirillum co-aggregates were found to have a positive influence on the total bacterial and Azospirillum population on the rhizosphere of sunflower. It has been found that the combination of Azospirillum brasilense with Azotobacter chroococcum to be superior in positively augmenting the growth (plant height, capitullum diameter and dry matter production) and yield (no of seeds capitullum-1, stalk yield and seed yield) parameters of sunflower crop.
