Késia Silva LourençoInstituto Agronômico de Campinas · Centro de Solos e Recursos Ambientais
Késia Silva Lourenço
Doctor of Philosophy
About
42
Publications
4,832
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Introduction
Dr. Késia Silva Lourenço is an agronomist (UDESC), with a Master's (UDESC) and PhD (IAC and Leiden University, Netherlands) degree and she has been working in the area of environmental sustainability since graduation. The focus of her work is the sustainable reuse of different agro-industrial residues in agriculture, as well as the assessment of their environmental impacts.
Additional affiliations
January 2022 - present
May 2018 - present
Education
August 2016 - April 2018
April 2013 - April 2018
Publications
Publications (42)
This study addresses the assessment of potential nitrification inhibitor (NI) 3,4-dimethylpyrazol-phosphate for mitigation of nitrous oxide (N2O) emissions from the joint application of concentrated vinasse (CV) and urea in soils under different pHs. An incubation experiment was performed under controlled conditions to evaluate the effect of the or...
Nitrous oxide (N2O) production in tropical soils cultivated with sugarcane is associated with ammonia-oxidizing bacteria (AOB) and fungal denitrifiers. However, the taxonomic identities and the community diversities, compositions, and structures of AOB and fungal denitrifiers in these soils are not known. Here, we examined the effects of applying d...
The application of vinasse, an organic byproduct of ethanol production, can enhance greenhouse gas emissions from N fertilizers, especially nitrous oxide (N2O). The objective of this work was to test the efficiency of the nitrification inhibitor (NI) 3,4 dimethylpyrazole phosphate (DMPP) in reducing N2O emissions from urea (UR) and ammonium nitrate...
Reducing greenhouse gas (GHG) emissions by substituting fossil fuels depends on how biofuels are produced and how emissions are calculated. Nitrous oxide (N 2 O) emissions from synthetic and organic N fertilizers are important sources of GHG from sugarcane ethanol. This study aimed to synthesize the literature information and derive regional N 2 O...
Microalgae are highly effective in nutrient recovery and have strong potential as a sustainable wastewater treatment technology. For this experiment, we obtained microalgae cultivated in pilot-scale tubular photobioreactor (PBR) located in a glass greenhouse of the Netherlands Institute of Ecology (NIOO-KNAW), in Wageningen, the Netherlands. The cu...
Disturbances in soil can cause short-term soil changes, consequently changes in microbial community what may result in long-lasting ecological effects. Here, we evaluate how multiple pulse disturbances effect the dynamics and resilience of fungal community, and the co-occurrence of fungal and bacterial communities in a 389 days field experiment. We...
Sugarcane straw is a source of carbon (C) and nitrogen (N), which affect soil temperature and moisture and therefore soil nitrous oxide (N2O) emissions from fertilized fields. The use of a nitrification inhibitor (NI) with N fertilizers is an option to reduce N2O production; however, sugarcane straw may interfere with the efficiency of a NI to redu...
The nitrification inhibitors (NIs) 3,4‐dimethylpyrazole (DMPP) and dicyandiamide (DCD) can effectively reduce N2O emissions; however, which species are targeted and the effect of these NIs on the microbial nitrifier community is still unclear. Here we identified the ammonia oxidizing bacteria (AOB) species linked to N2O emissions and evaluated the...
The original version of the article contained a mistake. The accession number has been incorrectly published in the Availability of data and materials section.
Vinasse is a major byproduct of the sugarcane biofuel industry, recycled in the fields. However, there is evidence that the application of vinasse with mineral nitrogen (N) fertilizers in sugarcane enhances the emission of greenhouse gases (GHGs). Therefore, strategies are needed to decrease the environmental impacts caused by both inputs. We carri...
Background:
Vinasse, a by-product of sugarcane ethanol production, is recycled by sugarcane plantations as a fertilizer due to its rich nutrient content. However, the impacts of the chemical and microbial composition of vinasse on soil microbiome dynamics are unknown. Here, we evaluate the recovery of the native soil microbiome after multiple dist...
Organic vinasse, a residue produced during bioethanol production, increases nitrous oxide (N2O) emissions when applied with inorganic nitrogen (N) fertilizer in soil. The present study investigated the role of the ammonia-oxidizing bacteria (AOB) community on the N2O emissions in soils amended with organic vinasse (CV: concentrated and V: non-conce...
Organic compounds and mineral nitrogen (N) usually increase nitrous oxide (N2O) emissions. Vinasse, a by‐product of bio‐ethanol production that is rich in carbon, nitrogen and potassium, is recycled in sugarcane fields as a bio‐fertilizer. Vinasse can contribute significantly to N2O emissions when applied with N in sugarcane plantations, a common p...
Recycling residues is a sustainable alternative to improve soil structure and increase the stock of nutrients. However, information about the magnitude and duration of disturbances caused by crop and industrial wastes on soil microbial community structure and function is still scarce. The objective of this study was to investigate how added residue...
Background
The production of 1 L of ethanol from sugarcane generates up to 12 L of vinasse, which is a liquid waste containing an as-yet uncharacterized microbial assemblage. Most vinasse is destined for use as a fertilizer on the sugarcane fields because of the high organic and K content; however, increased N2O emissions have been observed when vi...
Ethanol sustainability indicators are important, as this fuel replaces other fuels of fossil origin. Nitrogen fertilizers account for more than 20% of the energy spent to produce sugarcane in the field (Boddey et al., 2008) and for about 40% of the greenhouse gases (GHG), mostly as nitrous oxide (N2O), emitted to produce ethanol (Lisboa et al., 201...
The objective of this work was to evaluate soil chemical attributes, leaf nitrogen content, and corn and wheat yields under a no‑tillage system in response to the application of organic, organomineral, and mineral fertilizers with or without urease and nitrification inhibitors. The experiment was carried out on the field, with one wheat and two cor...
Quantification of ammonia volatilization after addition of animal residues and nitrogen (N) mineral fertilizers to the soil is important for N management in fertilization programs. The objective of this study was to evaluate the effect of adding a urease inhibitor to N fertilizers to minimize ammonia losses following soil application. The experimen...
Nitrous oxide (N2O) from nitrogen fertilizers applied to sugarcane has high environmental impact on ethanol production. This study aimed to determine the main microbial processes responsible for the N2O emissions from soil fertilized with different N sources, to identify options to mitigate N2O emissions, and to determine the impacts of the N sourc...
ABSTRACT Determining the chemical composition of poultry litter is important in order to apply this waste as soil fertilizer without causing negative environmental impacts. The aim of this study was to evaluate the average and variability of some chemical parameters of 165 samples of poultry litter produced from confined animal production facilitie...
A eficiência fertilizante da cama de aves depende da capacidade de mineralização de seus nutrientes que se encontram na forma orgânica. O potencial poluente deste resíduo, por outro lado, depende, dentre outros fatores, da rapidez da nitrificação dos compostos nitrogenados. O presente estudo objetivou quantificar a mineralização líquida e a nitrifi...
Incorporation of rice straw into the soil just before flooding for water-seeded rice can immobilize mineral nitrogen (N) and lead to the production of acetic acid harmful to the rice seedlings, which negatively affects grain yield. This study aimed to evaluate the formation of organic acids and variation in pH and to quantify the mineral N concentr...
Introdução O nitrogênio (N) é o nutriente mais requerido pelas plantas (Fageria et al., 2003), mas, em função de sua complexa dinâmica tanto no solo quanto nas plantas, sua recuperação pelas plantas raramente excede a 50% da quantidade Dinâmica do nitrogênio em solo alagado decorrente da aplicação de ureia e cama de aves na presença e na ausência d...
O feijoeiro é tradicionalmente cultivado em pequenas propriedades, onde é comum o uso de dejetos animais para adubação das culturas. Como é uma cultura de ciclo curto, os nutrientes precisam estar disponíveis logo após a germinação, o que nem sempre acontece quando a fertilização ocorre a partir de fertilizantes orgânicos. Neste trabalho, objetivou...
Common bean is traditionally grown on small farms in Brazil, where animal wastes are often used as soil fertilizer. Since this is a short-cycle species, nutrients must be available soon after seed germination, which is not always the case when supplied in the form of organic fertilizers. This study was carried out to evaluate the efficiency of diff...
Projects
Projects (3)
The greenhouse gases (GHG) emissions associated with the use of nitrogen fertilizers, in particular N2O, are of utmost importance for the sustainability of ethanol from sugarcane. Previous studies point to relatively low N2O emissions when N fertilizers are applied in the sugarcane crop in São Paulo, but such emissions can increase considerably when fertilizers are used together with vinasse and in areas with straw. The ethanol industry gradually tends to concentrate vinasse rather than applying the product in natura in the sugar cane fields. One of the alternatives is to produce fluid fertilizers from concentrated vinasse (CV) and mineral nutrients, reducing application costs. With this, N2O emissions can be high and eventually compromise the environmental gains obtained with the use of ethanol. The most likely source of fertilizer for CV mixing is urea (U), which is subject to N losses by NH3 volatilization if applied to the soil surface, which can also reduce the efficiency of the system. The present proposal aims to evaluate the N (N2O and NH3) emissions, the microbial processes involved and mitigation measures, including the use of nitrification inhibitors and urease inhibitors, through four subprojects to be conducted in the field and laboratory. With the new legislation of RenovaBio, the greater the reductions in GHG emissions from bioenergy produced, the higher will be the grower's financial return. Therefore, adequate indicators of GHG emissions from the production process and knowledge that lead to mitigating technologies, such as those aimed at in this study, besides the inherent scientific importance, are of interest to the productive sector.
Project goal
Goal: Provide a fundamental scientific understanding of soil functioning and the resulting ecosystem services in bio-economies based on innovative microbial ecology and soil science studies. Focus is in sugarcane and maize crops production systems by linking soil-borne microbial composition and functioning, waste residues recycling, fertilizers, soil factors and greenhouse gases (GHG) emissions.
Background and motivation
2014-2018
