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Copyright of Innotec is the property of Laboratorio Tecnologico del Uruguay and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Context: The use of biological inoculants or biofertilizers based on growth-promoting bacteria constitutes a sustainable biotechnological alternative to improve agricultural production. Knowledge gap: However, the environmental characteristics of agroecosystems can be very different between regions and these can have an effect on the growth and survival of such inoculants. Purpose: In this study, native microorganisms with plant growth-promoting capacity that can be used on crops in the Caribbean region of Colombia were isolated and characterized. Methodology: Rhizosphere bacteria were isolated from Capsicum sp. They were molecularly identified by 16S and their capacity to fix nitrogen in Ashby medium and to solubilize phosphate in NBRIP medium was determined. Inoculum of the identified bacteria were then applied to chili pepper plants and their effect on plant growth promotion was evaluated. Results and conclusions: The isolates were identified as Achromobacter sp., Bacillus mycoides, Bacillus sp., and Paenibacillus dendritiformis, and their application promoted plant growth, which was evidenced by the increase of at least one growth parameter, as well as nitrogen concentration in the tissues of chili pepper plants. Finally, Achromobacter sp. and B. mycoides were the inoculums with the best results, indicating their potential for use in agriculture in the region. [ABSTRACT FROM AUTHOR]

Copyright of Bistua: Revista de la Facultad de Ciencias Básicas is the property of Facultad de Ciencias Basicas de la Universidad de Pamplona and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The present research was carried out in an organoponic belonging to the University of Matanzas. With the aim to evaluate the biochemical and productivity responses of carrot (Daucus carota L.) after the application of native microorganisms four treatments were analyzed (control, native microorganism's bio-preparations with doses of 4 mL m-2, 8 mL m-2 and 10 mL m-2, the ME were sprayed on 20, 40 and 60 days, respectively). The experimental design employed was a complete randomize block. The yield and its components as well as the biochemical parameters total soluble protein, carbohydrates and reducing sugar were measured. The obtained results suggested that the native microorganisms had a positive effect on the yield and its components in carrot plants, where 10 mL m-2 was the most effective dose, increased 0,72 kg m-2. The contents of soluble carbohydrates, reducing sugar and soluble proteins were also increased in a maxim value of 3.35 mg mL-1, 17.6 kg m-2 and 8.05 kg m-2 respectively, with the application of the studied bioproduct. [ABSTRACT FROM AUTHOR]

The experiment was done at the Credit and Services Cooperative (CCS) “Juan de Mata Reyes", in Pedro Betancourt municipality, Matanzas. The objective was to evaluate the effectiveness of indigenous microorganisms (IMO) preparations on the growth of onion (Allium cepa L.), variety Texas Early Grano. Five treatments were studied (control, a 2 mL.m2 treatment before transplantion, a 4 mL.m2 treatment before transplantation, and both 2 and 4 mL.m2 treatments 20 days after transplantion). The experiment was conducted in a randomized block design. The professional statistical pack STATISTICA, version 6.0 for WINDOWS was used for data processing. The results were statistically processed using simple analysis of variance and the Duncan´s multiple comparison Test for media with a level of significance of pd"0.05. The native microorganisms in the preparations were characterized. 60 days after transplantation, the parameters height of plant, number of leaves and diameter of the false stem were evaluated; and at harvest time, the total yield (t.ha-1) and the number of bulbs in diameter category were determined. The best results concerning the height of the plant (cm), diameter of false stem (mm) and total yield (t.ha-1).were obtained with the preparation of 2 mL.m2 at the moment of transplantion, and 20 days after the application. [ABSTRACT FROM AUTHOR]