Resposta à inoculação de fungo solubilizador de fósforo em milho

Nahas, Ely; Fornasieri, D. J.; Assis, Luiz Carlos

doi:10.1590/s0103-90161994000300014

Cited by 10 publications

(10 citation statements)

References 16 publications

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“…Hasebe et al (13) observed a predominance of cocci over the rods. The addition of superphosphate decreased significantly the bacteria and fungi counts in soil cultivated with corn (28).…”

Section: Introductionmentioning

confidence: 93%

Bacterial diversity in soil in response to different plans, phosphate fertilizers and liming

Silva¹,

Nahas²

2002

Braz. J. Microbiol.

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The diversity of bacterial isolates from soil in response to different plants (control, Brachiaria ruziziensis and Cajanus cajan), fertilization (control, simple superphosphate and rock phosphate) and liming (with and without lime) was evaluated. Phenotypic and physiological characteristics of the isolates were recorded and organized in a file to identify the bacteria. Among the isolates, 95% were Gram-positive and 5% Gramnegative rods. Soil cultivated with B. ruziziensis favored the nonsporing Gram-positive and Gram-negative rods compared to soils with C. cajan or uncultivated. Number of spore-forming Gram-positive rods were higher in plots with superphosphate than in unfertilized soil or soil fertilized with rock phosphate. In unfertilized plots, larger number of Gram-positive cocci and Gram-negative rods was obtained than in fertilized plots. Unlimed plots favored spore-forming Gram-positive rods, Gram-positive cocci and Gramnegative rods, while with liming a larger proportion of nonsporing Gram-positive rods was found. From 7 to 86% of the total isolates utilized different carbohydrates. The recording data used in this experiment was effective in the isolates identification, and might be useful for diagnosis of soil bacteria. Bacillus, Cellulomonas, Rhodococcus, Enterobacter, Flavobacterium, Micrococcus and Arthrobacter were the genera more commonly found. Bacterial diversity was enhanced in limed, unfertilized and plant cultivated plots.

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“…Hasebe et al (13) observed a predominance of cocci over the rods. The addition of superphosphate decreased significantly the bacteria and fungi counts in soil cultivated with corn (28).…”

Section: Introductionmentioning

confidence: 93%

Bacterial diversity in soil in response to different plans, phosphate fertilizers and liming

Silva¹,

Nahas²

2002

Braz. J. Microbiol.

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“…Nahas et al (1994c) também verificaram aumento no número de fungos, com a adição de matéria orgânica (palha de milho moída), em relação ao tratamento com aplicação isolada de rocha fosfatada, em Latossolo Vermelho escuro.…”

Section: Resultsunclassified

“…O aumento no teor de matéria orgânica foi verificado aos 90 dias, por meio da análise química do solo, em que o resultado foi de 7,3 mg dm -3 , nos tratamentos com ausência de torta de filtro, e de 8,5 mg dm -3 , nos tratamentos com torta. Nahas et al (1994c) foi adicionada matéria orgânica, houve aumento no número de bactérias e fungos, em relação ao tratamento apenas com solo.…”

Section: Resultsunclassified

Uso de torta de filtro enriquecida com fosfato natural e biofertilizantes em Latossolo Vermelho distrófico

González

Prado

Hernández

et al. 2014

Pesqui. Agropecu. Trop.

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INTRODUÇÃOOs solos tropicais possuem baixa disponibilidade de fósforo, sendo este fator reconhecido como um dos mais limitantes à produção agrícola (Prado 2008). Para elevar os teores de fósforo no solo, são necessárias aplicações de doses bem mais elevadas do ABSTRACT RESUMOque a quantidade que as plantas necessitam, devido aos processos químicos de adsorção, induzindo à formação de fosfatos de cálcio em solos alcalinos e de fosfatos de ferro e de alumínio em solos ácidos. A dinâmica do fósforo no solo está associada a fatores ambientais que controlam a atividade dos micro-organismos, os quais imobilizam ou liberam 1. Trabalho recebido em abr./2013 e aceito para publicação em abr./2014 (nº registro: PAT 23478).

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“…A diversidade e as populações dos MSFI são superiores em solos rizosféricos (Nahas et al, 1994;Nautiyal, 1999), devido ao maior aporte de carbono (C) e energia, fornecida via exsudação radicular das plantas (Moreira & Siqueira, 2006). Isso resulta em maiores taxas de solubilização de P nos solos rizosféricos, em comparação aos não rizosféricos (Reis et al, 2008a).…”

Section: Introductionunclassified

Impacto de herbicidas na biomassa microbiana e nos microrganismos solubilizadores de ortofosfato do solo rizosférico de cana-de-açúcar

et al. 2009

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-This work aimed to evaluate soil microbial biomass carbon (MBC), phosphate solubilization potential (PSP), and relative phosphate solubilization potential (RPSP) in the rhizosphere soil of sugarcane cultivars after herbicide application. The trial was installed under field conditions in a conventional tillage system, using a completely randomized block design with four replications. The treatments corresponded to two sugarcane varieties, RB86-7515 and SP80-1816, and the herbicides ametryn (2,000 g ha -1 ), trifloxysulfuron-sodium (22.5 g ha -1 ), trifloxysulfuron-sodium + ametryn (37 + 1,463 g ha -1 ), sulfentrazone (750 g ha -1 ), and an untreated control plot. The herbicide was applied when plants presented 3 to 4 leaves. Soil samples were collected at 7, 14, and 28 days after herbicide application (DAH) for the MBC, PSIF, and RPSP evaluations. MBC in the rhizospheric soil of RB86-7515 was less affected by the herbicides at 7 DAH, compared to SP80-1816. Trifloxysulfuron-sodium stimulated PSIF (21.11%), while ametryn reduced its activity. Sulfentrazone did not affect PSIF. The sugarcane varieties tested varied in their capacity to associate with soil microorganisms, resulting in different responses of the soil microbiota to the herbicides.

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Resposta à inoculação de fungo solubilizador de fósforo em milho

Cited by 10 publications

References 16 publications

Bacterial diversity in soil in response to different plans, phosphate fertilizers and liming

Bacterial diversity in soil in response to different plans, phosphate fertilizers and liming

Uso de torta de filtro enriquecida com fosfato natural e biofertilizantes em Latossolo Vermelho distrófico

Impacto de herbicidas na biomassa microbiana e nos microrganismos solubilizadores de ortofosfato do solo rizosférico de cana-de-açúcar

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