Respostas da cultura do rabanete à inoculação de fungos solubilizadores de fosfatos

Narloch, Charles; Oliveira, Vetúria Lopes de; Anjos, J. T. dos; Filho, Germano Nunes Silva

doi:10.1590/s0100-204x2002000600013

Cited by 13 publications

(9 citation statements)

References 14 publications

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“…In this experiment, P acquisition was exclusively from the soil and consequently shoot P is the result of a higher P mobilized from soil to roots suggesting than in In(+) P mobilization was substantially higher in relation to In(0) and In (-). In relation to this effect of microbial inoculation on plant growth and P acquisition, Narloch et al (2002) have reported a higher plant growth without a higher P acquisition in radish inoculated with Penicillium or Aspergillus spp. which also agree with Freitas et al (1997) report for canola inoculated with rhizobacterias.…”

Section: Resultsmentioning

confidence: 99%

Effect of inoculation with Penicillium albidum, a phosphate‐solubilizing fungus, on the growth of Trifolium pratense cropped in a volcanic soil

Morales¹,

Alvear

Valenzuela

et al. 2007

J. Basic Microbiol.

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Volcanic soils in the south of Chile have an elevated quantity of total P, which is scarcely available due to its high P fixation capacity. One strategy for increasing the availability of P for the vegetables that grow there would be to use phosphate-solubilizing microorganisms. In one assay conducted in a greenhouse on a volcanic soil, the effect of inoculation with Penicillium albidum, a phosphate-solubilizing fungus, was studied on the growth of red clover (Trifolium pratense L). Some chemical and biological properties of the soil were also evaluated. There were three treatments: a) active inoculum [In(+)], b) inactive inoculum (autoclaved) [In(-)] and c) without inoculum [In(0)], each one done in three replicates. The In(+) significantly (P < 0.050) increased the growth of the plants, contributing particularly to root development. The P mobilized to the shoot with In(+) was higher than twofold related to In(0) and In(-) treatments; however, the In(+) plants had similar concentration of shoot P. In the soil, available-P was not statistically different (P < 0.050) among the treatments but phosphatase activity in In(+) was higher (P < 0.050) in comparison to In(0). The results suggest that Penicillium albidum contributed to growth and nutrition of the red clover through the induction of root development and enhancing phosphate mobilization from the soil and into the plant. It is concluded that Penicillium albidum, under greenhouse conditions, in soils deficient in available P can increase the inoculation potential for volcanic soils in Chile. Anyway further studies are required, especially in organic farming where the use of soluble P fertilizer is avoided.

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Section: Resultsmentioning

confidence: 99%

Effect of inoculation with Penicillium albidum, a phosphate‐solubilizing fungus, on the growth of Trifolium pratense cropped in a volcanic soil

Morales¹,

Alvear

Valenzuela

et al. 2007

J. Basic Microbiol.

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“…Growth promotion is commonly considered an indirect indicator of phosphate solubilization by a microorganism (Dupponois et al, 2006;Kapri and Tewari, 2010). Nonetheless, these characteristics could be more related to the production of phytohormones and growth-promoting substances than to phosphorus solubilization (Narloch et al, 2002). A better indicator of the effect of phosphate solubilization on plants by a microorganism is to evaluate the variables related to phosphorus uptake, such as the numbers of flowers, fruits or seeds (Bashan et al, 2013;Viruel et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Phosphate solubilization by fungi with nematicidal potential

Lima-Rivera

López-Lima

Desgarennes

et al. 2016

J. Soil Sci. Plant Nutr.

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We evaluated the nematicidal potential and phosphate solubilization ability of the fungal species Geomyces pannorum and Paecilomyces carneus, which are associated with the potato cyst nematode Globodera rostochiensis. In a broth medium containing calcium phosphate, the two fungi solubilized between 67%-96% of the insoluble phosphorus that was present in the medium, and in a broth medium containing iron phosphate, the phosphorus that was solubilized by the two fungi ranged between 2%-13%. In a greenhouse experiment, G. pannorum and P. carneus were applied to soil that was naturally infested with G. rostochiensis and planted with Avena sativa. The fungi increased the available phosphorus in the soil by more than 30%, and Paecilomyces carneus also reduced the nematode population by 71%. This study is the first to report on the ability of G. pannorum and P. carneus to increase the available phosphorus in the soil, suggesting that these fungal species may have potential uses in agricultural soils with insoluble phosphorus. Moreover, this study provides a new alternative that contributes to the sustainable management of crops with bio-agents that have dual activity; they increase the available phosphorus in the soil and mitigate plant parasitic nematodes.

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“…Diversos trabalhos foram realizados, utilizando-se o rabanete em sistemas de consórcio com diversas culturas, como, por exemplo, alface (Cecílio Filho & May, 2002;Rezende et al, 2005), repolho , alface-cenoura/alface-rabanete (Salgado et al, 2006), e como indicador de fertilidade do solo (Narloch et al, 2002).…”

Section: Introductionunclassified

Tamanho ótimo de parcela para experimentos com rabanetes

et al. 2012

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Optimal plot size for experiments with radishThe establishment of optimum plot size, in any culture, is one of the ways to increase experimental precision and maximize the information obtained in an experiment. The aim of this study was to determine the optimum size of plots for experiments with radish for the variables mass and root diameter. A test of uniformity was conducted with the planting of radish carried out in lines spaced at 15 cm to 5 cm between plants. The basic unit was defined as a linear segment of three consecutive plants. After 30 days of planting, mass (g) and diameter (mm) of radishes were evaluated. We simulated 35 sizes of plots, estimating mean and coefficient of variation for each size of plot and, using different nonlinear models, we determined the optimum size of plot for assays with radish. It was observed that the methods of modified maximum curvature and targeted linear and quadratic response models estimated different sizes of plot; therefore, in experiments with radish culture, plots with 21 to 63 plants (0.1575 to 0.4745 m²) per plot are recommended.

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Respostas da cultura do rabanete à inoculação de fungos solubilizadores de fosfatos

Cited by 13 publications

References 14 publications

Effect of inoculation with Penicillium albidum, a phosphate‐solubilizing fungus, on the growth of Trifolium pratense cropped in a volcanic soil

Effect of inoculation with Penicillium albidum, a phosphate‐solubilizing fungus, on the growth of Trifolium pratense cropped in a volcanic soil

Phosphate solubilization by fungi with nematicidal potential

Tamanho ótimo de parcela para experimentos com rabanetes

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