LAS MICORRIZAS ARBUSCULARES Y LAS BACTERIAS RIZOSFÉRICAS COMO ALTERNATIVA A LA NUTRICIÓN MINERAL DEL TOMATE
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Instituto Nacional de Ciencias Agrícolas
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In «Liliana Dimitrova» Horticultural Investigation Institute, an experiment was developed during 1996-2000 with the variety of tomato HC 38-80 sown late in the season. In the seedling phase, a screening was accomplished, with the objective of selecting the most efficient arbuscular mycorrhizal fungi strains and rhizobacteria to the tomato crop, as well as the best combinations. Therefore, plant height, stem diameter, root length and total dry weight were determined. Later on, the effect of biofertilizers selected and mineral fertilization on crop yield, its components and plant nutritional status were evaluated. The greatest values recorded in the seedling phase corresponded to strain inoculation with Glomus mosseae, Glomus fasciculatum, Azospirillum brasilense, Azotobacter chroococcum, Glomus mosseae + Pseudomonas fluorescens and Glomus mosseae + Azospirillum brasilense. Yield and its components were benefited with the application of optimum fertilizer levels, while the greatest values for the inoculated treatments corresponded to Glomus mosseae, Glomus mosseae + Pseudomonas flourescens and Glomus mosseae + Azospirillum brasilense combined with 50 % N fertilization. The arbuscular mycorrhizae and its inoculation with growth promoting rhizobacteria stimulated nitrogen and phosphorus absorption.
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Agrociencias