Global climate change is closely tied to CO2 emissions, and implementing conservation-agricultural systems can help mitigate emissions in the Amazon. By maintaining forest cover integrating sustainable agricultural practices pasture, these preserve carbon stocks Amazon soils. In addition, improve soil health, microclimate regulation, promote region. This study aimed evaluate emission dynamics its relationship with attributes under different uses The experiment consisted of four treatments...

Abstract Studies have reported improvements in soil quality integrated crop‐livestock systems (ICLS) when compared to conventional systems. The hypothesis of this study was that ICLS improve Oxisol due the use intercropping, adding pasture and cattle aim evaluate chemical physical characteristics an production system versus system. We two systems: crop (maize grain production) livestock (beef on single pasture) and, four ICLS: maize plus Marandu palisade grass sown simultaneously without...

O solo é um dos principais compartimentos de carbono no ecossistema terrestre, capaz armazenar quantidades expressivas desse elemento e, portanto, a compreensão fatores que contribuem para as perdas CO2 em solos agrícolas fundamental determinar estratégias redução das emissões gás e ajudar mitigar o efeito estufa. objetivo deste estudo foi investigar do preparo da deposição resíduos cultura cana-de-açúcar na emissão CO2, temperatura umidade solo, durante reforma canavial, ao longo período 15...

Abstract Crop rotation adoption in no‐tillage systems (NTS) has been recommended to increase the biological activity and soil aggregation, suppress plant pathogens, productivity aiming at sustainability of agricultural areas. In this context, study aimed assess effect crop on arbuscular mycorrhizal fungi (AMF) community aggregation a cultivated for nine years under NTS. Treatments consisted combinations three summer sequences seven winter crops. Summer corn ( Zea mays L.) monoculture,...

Core Ideas Spatial distribution P. brachyurus nematode is influenced by soil chemical properties. In sites with low fertility the plants become more susceptible to attack. concentrating greater amount Mg are favorable number of nematode. The economic damage Brazilian soybean [ Glycine max (L.) Merr.] production attributed Pratylenchus has increased in recent years. objective this study was determine influence properties on variability a crop. Soil and root samples (0–0.20 m) were collected...

O preparo mecânico do solo é uma das práticas agrícolas que contribuem para o aumento da perda de carbono via emissão CO2 (FCO2). Com este trabalho objetivou-se investigar efeito três sistemas na FCO2, temperatura e umidade em área reforma cultura cana-de-açúcar. A experimental foi constituída parcelas, cada recebendo um dos preparos solo: convencional (PC), subsolagem (SC) localizada (SL). a foram avaliadas durante período total 17 dias. FCO2 maior no PC (0,75 g m-2 h-1). não diferiu (p...

The spatial structure of soil CO2 emission (FCO2) and attributes are affected by different factors in a highly complex way. In this context, study aimed to characterize the variability patterns FCO2 physical, chemical, microbiological sugarcane field area after reform activities. was conducted an Oxisol with measurement FCO2, temperature (Ts), moisture (Ms) regular 90 × 90-m grid 100 sampling points. Soil samples were collected at each point depth 0-0.20 m determine physical (density,...

Core Ideas The production of the main soil greenhouse gases (CO 2 , CH 4 and N O) is influenced by agricultural practices. bulk density micropores showed negative correlation with CO emission. factor analysis formation two independent processes that explained almost 72% total variance observed in data. moisture a controlling (GHG: carbon dioxide [CO ], methane [CH ,] nitrous oxide [N O]) practices cause changes physical, chemical, biological attributes, directly affecting their emission to...

Soil mineralogy and texture are directly related to soil carbon due the physical properties of clay surface. Traditional techniques for quantifying in time-consuming expensive, making large-scale quantification mapping unfeasible. The alternative is use sensors, such as diffuse reflectance spectroscopy (DRS), an economical, fast, accurate technique predicting stocks. In this sense, study aimed (a) investigate relationship C with different mineralogical, chemical, attributes geological...

The Pantanal has a high diversity of native pastures that provide food for many wild and domestic animals. cattle raising is practiced in an extensive grazing-based system varies according to the flood levels area. This study aimed evaluate fractions soil organic matter areas under different uses quantify C N stocks sandy soils Pantanal. Soil samples from three differentiated by predominance Hymenachne amplexicaulis, Axonopus purpusii, Mesosetum chaseae land use systems (continuous grazing...

This study was developed in a sugarcane area under contrasting management regimes defined by mechanical green harvesting (GH) and burning (BH) to test the hypotheses that ratio of carbon dioxide (CO2) oxygen (O2), known as apparent respiratory quotient (ARQ), can be used categorise soil biological activity. The aimed (i) examine profile relationship between CO2 flux (FCO2) O2 (FO2) with straw maintenance (GH), considering moisture; (ii) suggest use ARQ an index for categorising activity...

A emissão de CO2 do solo (FCO2) em áreas agrícolas é resultante da interação diversos fatores, sendo alterada pela prática manejos e cultura, além das condições edafoclimáticas locais. Neste estudo, objetivou-se quantificar a FCO2 função calagem posição aplicação (antiga linha entrelinha) cultura laranja área conversão para cana-de-açúcar, no município Frutal-MG. Os tratamentos avaliados foram: Linha/CC (linha com calcário); Entrelinha/CC (entrelinha Linha/SC sem calcário), Entrelinha/SC...

The identification of erosion-susceptible areas is fundamental for the adoption soil conservation practices. Thus, best way to estimate spatial pattern erosion must be identified, in which process uncertainties are also taken into consideration. purpose this study was evaluate and temporal uncertainty loss under two scenarios sugarcane harvest management: green cane (GC) burnt (BC). carried out on a 200-ha area, Tabapuã, São Paulo State, Brazil. A regular 626-point sampling grid established...

to analyze the psychosocial impacts of COVID-19 pandemic among Brazilian women from rural settlements.this is a quantitative and longitudinal study conducted with 13 settled women. The data were collected between January 2020 September 2021 using questionnaires on perception social environment (quality life, support, self-efficacy), common mental disorder symptoms sociodemographic aspects. analyzed descriptive statistics, cluster analysis variance analysis.intersecting vulnerability...