Evaluation of arbuscular mycorrhizas on tomato plantlets production (Original)
Keywords:
arbuscular mycorrhizas; plantlets; tomato; bioinoculantsAbstract
The present research was carried out under seedling conditions in area of intensive agricultural orchard, belonging to agricultural farm of Media Luna municipality during September, 23th to October, 13th 2017 in order to evaluate the effect of arbuscular mycorrhizas on tomato (Solanum lycopersicum L, var. Placero) plantlets production, employing a substrate composed up by soil, sheep manure and rice husk in 2:1:1 proportion. Five arbuscular mycorrhizal strains belong to Glomus genus (Glomus intraradices, G. fasciculatum, G. mosseae, G. caledonium UK y G. occultum) in proportion of 300 g m-2 during the seed sowing on seedling ere inoculated. In addition, a control (without inoculation) also was used, which were set up on randomized block design with three replicates. The plantlets growth indicators (average height, principal root length, steam diameter and average dry matter) and mycorrhizal parameters (mycorrhizal colonization and mycorrhizal efficiency index) were evaluated. The inoculated arbuscular mycorrhizas showed a positive and significant effect on growth indicators and mycorrhizal parameters evaluated, highlighting the native strains: G. intraradices and G. occultum with the best results. Moreover, it is possible to get most vigorous, healthy and available plantlets for transplanting in a shorter time, showing the biofertilizing and biostimulating abilities of these bioinoculants on plant growth, as well as, the real possibilities of their use as an alternative of fertilization in agriculture under seedling condition.
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