Addition of waste and introduction of microorganisms after 45 years of soil
            degradation

Santos, Adriana Avelino; Agustini, José Antonio; Maltoni, Kátia Luciene; Cassiolato, Ana Maria Rodrigues

doi:10.5935/1806-6690.20180041

Cited by 4 publications

(5 citation statements)

References 2 publications

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“…The opposed the trend for q Mic, the proportion of MBC to total organic carbon. The observed q Mic increased in the RM sites, relative to DAWI, indicating a higher proportion of microbial carbon in the total carbon pool [ 61 , 62 ]. Similar values were found among all RM treatments and CER for qCO 2 and qMic , showing that remediation is producing conditions similar to our ideal undisturbed site.…”

Section: Discussionmentioning

confidence: 99%

“…Similar values were found among all RM treatments and CER for qCO 2 and qMic , showing that remediation is producing conditions similar to our ideal undisturbed site. The quotients present specific respiration rates ( q CO 2 ) and stock of carbon in the soil ( qMic) , the highest values of q Mic indicate the maintenance of carbon in the soil [ 61 ], revealing that after five years of treatments, the RM soils show positive changes in microbial activity comparable to the specific respiration and stock of carbon from the CER. These microbial responses are expected due to the input of organic amendments and the physical changes caused by tillage [ 60 , 63 ].…”

Section: Discussionmentioning

confidence: 99%

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Biomass residues improve soil chemical and biological properties reestablishing native species in an exposed subsoil in Brazilian Cerrado

et al. 2022

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Revegetation of exposed sub-soil, while a desirable strategy in the recovery processes, often fails due to extreme soil chemical properties, such as low organic matter and pH levels inhospitable to biological activities such as nutrients cycling and plant establishment. This is the case for approximately 800 ha of the Cerrado biome in Brazil, where erecting the embankment of a hydroelectric dam in the 1960’s stripped vegetation, soil, and subsoil layers thereby distorting the soil properties. This work evaluates the effectiveness of restoration management (RM) treatments, to restore the soil quality, including biological activity and chemical attributes. In a factorial scheme, RM treatments include the addition of organic residue from aquatic macrophytes (AM) at 3 rates (0, 16 and 32 t ha-1), combined with ash from sugar cane bagasse of agroindustrial origin (BA) at 4 rates (0, 15, 30 and 45 t ha-1). RM samples contrasted samples collected from undisturbed Cerrado (CER) as well as a degraded area without intervention (DAWI). The mechanized RM plots received amendments and reforestation of 10 Cerrado native tree species. After 5 years, vegetation covered up to 60% of the surface in RM treatments receiving AM32 + BA45. AM and BA residues promoted height increases in the introduced plants. All RM treatments promoted lower levels of Al3+ than DAWI and CER. The combination of AM32 over the rates of incorporated ash increased soil pH and K values similarly to CER. Microbial-related variables, such as microbial biomass-C was the largest in CER, followed by the RM treatments, and the lowest in DAWI. The microbial quotient was no different between CER and RM treatments. The addition of residues such as AM and BA increased the vegetation covered, improved chemical and microbiological indicators. Thus, the residues used aided the recovery process of intensely degraded soils in the Cerrado area.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Biomass residues improve soil chemical and biological properties reestablishing native species in an exposed subsoil in Brazilian Cerrado

et al. 2022

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“…According to the Köppen classification (Climate-Data.Org, 2019), this region is characterized by the humid subtropical (Cfa) climate, with hot summers and cold winters, having an average annual rainfall of 1800 mm. The region soil is classified, according to Embrapa, as a "Latossolo Vermelho Eutroférrico" (Ultisol) with clayey texture (Santos et al, 2018a).…”

Section: Methodsmentioning

confidence: 99%

Microbiological attributes of a soil under history of swine wastewater application

Korber

Hass

Freitas

et al. 2020

Agraria

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This research sought to study the effect of applying swine wastewater (SW) on the microbiological attributes of a clayey soil cultivated with physic nut (Jatropha curcas L.). This experimental area was subjected to SW applications for 3 years, followed by fallow for other 2 years. In December 2017, soil collections were carried out and the experiment conducted in randomized complete blocks (RCB) with six treatments and three replicates, namely T1: 0 (control), T2: 40, T3: 80, T4: 120, T5: 160 and T6: 200 m 3 ha-1. The evaluated attributes were the following: CFU, diversity, MBC, SBR, qCO 2 and FDA. Values of the CFU means demonstrated an increase in the bacterial population density and the diversity pointed to the favoring of bacterial morphotypes already present in the soil, in all treatments under SW application. CFU and SBR were the most effective variables in obtaining results and in the treatment discrimination. The dose with the best metabolic performance was 160 m 3 ha-1 due to the better relationship of the parameters previously evaluated in this study.

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“…A. Santos et al, 2018;Boni et al, 2022), located in the Cerrado biome, Selvíria-MS (20º23'02"S 51º24'24"W).…”

Section: Isolation and Selection Of Strainsmentioning

confidence: 99%

Bioprospecção de bactérias solubilizadoras de fosfato em solos com diferentes fertilidades

Oliveira,

Lourenço,

Feitosa

et al. 2024

Sem. Ci. Agr.

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As bactérias solubilizadoras de fosfato (BSF) possuem capacidade para liberar o fósforo (P) que está adsorvido no solo, convertendo fosfato insolúvel em formas solúveis, tornando-o disponível para a absorção pelas plantas. Estas bactérias podem ser encontradas naturalmente no ambiente, tendo o solo como maior reservatório. Além de serem consideradas benéficas e seguras, as BSF representam uma alternativa viável para uso agrícola, pois podem ser multiplicadas e devolvidas à rizosfera (inoculantes, bioestimulantes, biofertilizantes, biopesticidas) para estimular o crescimento das plantas por meio de mecanismos diretos e/ou indiretos. No entanto, encontrar isolados eficientes e adaptados às diversas culturas e sistemas de cultivo permanece um grande desafio. Esta pesquisa teve por objetivo prospectar BSF a partir do solo de diferentes áreas e selecionar, por meio de ensaios in vitro, cepas eficientes e com maior potencial para uso agrícola, bem como, avaliar os efeitos da inoculação em sementes de arroz de terras altas. A partir de amostras de solo coletadas em área conservada do bioma Amazônia, área agrícola produtiva do bioma Cerrado e área degradada com subsolo exposto do bioma Cerrado, foram obtidos 32 isolados solubilizadores. Destes, três foram selecionados pela capacidade de solubilização in vitro para fosfato de cálcio e/ou fosfato de ferro, e com início de solubilização precoce. Identificados como Pantoea sp., Enterobacter sp. e Klebsiella sp., os mesmos não apresentaram danos à sanidade das sementes de arroz, ou à germinação e emergência das plântulas, além de promoverem aumento do comprimento das raízes.

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Addition of waste and introduction of microorganisms after 45 years of soil degradation

Cited by 4 publications

References 2 publications

Biomass residues improve soil chemical and biological properties reestablishing native species in an exposed subsoil in Brazilian Cerrado

Biomass residues improve soil chemical and biological properties reestablishing native species in an exposed subsoil in Brazilian Cerrado

Microbiological attributes of a soil under history of swine wastewater application

Bioprospecção de bactérias solubilizadoras de fosfato em solos com diferentes fertilidades

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