Losses of water, soil, and nutrients during high-intensity simulated rainfall in two soil management systems different sources of fertilization

Lemos, Alexandra Minossi de; Cassol, Elemar Antonino; Barros, Cláudia Alessandra Peixoto de

doi:10.1590/0103-8478cr20190306

Cited by 5 publications

(5 citation statements)

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“…Adicionalmente, tal parâmetro pode servir para mensurar a quantidade de sais perdidos devido ao escoamento subsuperficial que, portanto, implica em ineficiência na aplicação de fertilizantes e aumento de custos de produção. Lemos et al (2020) não encontraram diferenças nos valores de condutividade elétrica na água de escoamento, ao se comparar diferentes sistemas de manejo do solo. Os autores apresentaram valores médios de condutividade elétrica de 43,78 e 44,51 μS cm -1 para o sistema convencional e de plantio direto respectivamente, valores muito próximos dos resultados encontrados na cobertura com milho solteiro e sistema Santa Fé.…”

Section: Resultsunclassified

“…Em pH mais alcalino, acima de 7, ocorre maior transformação do íon amônio (NH 4+ ) em amônia livre e gasosa (NH 3 ), tóxica aos peixes (LIMA, 2019). Lemos et al (2020) ao analisar o pH na água de escoamento, comparando diferentes sistemas de manejo do solo, também não encontraram diferença significativa entre os tratamentos. Os autores apresentaram valores de pH de 6,56 e 6,66 em sistemas convencionais e de plantio direto, respectivamente, valores abaixo do encontrado para a cobertura vegetal de milho solteiro e sistema Santa Fé.…”

Section: Resultsunclassified

“…A erosão hídrica é um processo natural que consiste na desagregação, transporte e deposição das partículas do solo; todavia, pode ser intensificada pela falta de sistemas conservacionistas. Em tais locais podem ocorrer contaminação e poluição dos rios por dejetos animais e fertilizantes químicos (LEMOS et al, 2020), bem como perdas de nutrientes do solo (ARAUJO et al, 2016), com consequências ambientais e socioeconômicas relevantes (DECHEN et al, 2015). A disposição da cobertura vegetal na superfície do solo é uma prática fundamental para o estabelecimento de sistemas conservacionistas do solo e da água.…”

Section: Introductionunclassified

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Sistema Santa Fé auxilia na redução do escoamento superficial e melhoria da qualidade da água?

et al. 2021

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The cover crop on the soil surface is a fundamental practice for the establishment of soil and water conservation systems.The Santa Fé System consists of the inclusion of forage species in the grain production system, mainly by intercropping. The objective of the study was to evaluate the effect of cultivation of single maize and maize in consortium with U. brizantha cv. marandu, in runoff and qualityof runoffusing a rainfall simulator.The experiment was carried out at the School Farm of the IF Goiano Campus Iporá in a Quartzipsament, in a Brazilian Savanna region.The following land coverwere evaluated: uncoveredsoil, single hybrid corn and SantaFé System. For the determination of the runoff volume and the runoff quality, three tests were performed in each treatment, using a pendulum rainfall simulator built at the IF Goiano Campus Iporá. In each test, the total volume of runoffwas counted and every five minutes samples were collected to characterize the runoffquality, in which turbidity, pH and electrical conductivity were analyzed.Water losses were reduced by 82% and turbidity by 96% in the Santa Fé system, compared to uncoveredsoil.The Santa Fé System showed better performance with less runoff volume and better quality of runoff when turbidity was evaluated, which demonstrates its high potential in minimizing soil water erosion.

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Section: Resultsunclassified

Section: Introductionunclassified

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Sistema Santa Fé auxilia na redução do escoamento superficial e melhoria da qualidade da água?

et al. 2021

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“…Besides, other soil features, including bulk density, had a more substantial influence. In a simulated rainfall trial with high intensity (120 mm h -1 ), Lemos, Cassol, and Barros (2020) obtained a C value of 77% for maize under NT, which was about 1.71 times higher than that for CT.…”

Section: Effects Of Soil Management and Cover On Runoffmentioning

confidence: 87%

Soil loss and runoff in southern Brazil in conservation systems: a long-term experiment

Dambros,

Lima,

Barros

et al. 2023

Acta Sci. Agron.

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Brazil has high soil loss rates due to its tropical and subtropical climate characteristics. In this sense, soil use and management practices may minimize such losses. In this study, experimental plots were monitored for eight years in southern Brazil during natural rainfall events. Treatments were as follows: I) bare soil under conventional tillage, II) barley-oat/ soybeans succession under conventional tillage, III) oat-lupine-vetch/ maize succession under conventional tillage, IV) barley-oat/ soybeans succession under no-tillage, and V) oat-lupine-vetch/ maize succession under no-tillage. Data on rainfall amount and erosivity indices (EI30, EI20, and EI10) were subjected to regression analyses, evaluating the effects of climatic variables on soil and water losses. We could also analyze crop species, conventional and no-tillage systems, and winter and summer seasons. The highest soil and water losses occurred in treatments under conventional tillage. In addition, soybeans treatments increased soil and water losses. Maize under no-tillage was the most efficient practice, as it had soil losses (3.4 times) and water losses (1.5 times) lower than soybeans under conventional tillage. Rainfall amounts and EI30 were better correlated with soil and water losses in conventional tillage treatments. However, EI10 could better explain the soil losses from the conservationist treatment.

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“…The reduction in Cu levels due to manure application (Exhibit 9) may be associated with greater plant production at bigger rates and, consequently, greater uptake by plants (Kumar et al., 2021). Moreover, rainfall intensity and sediment volume in runoff can influence Cu concentration (Bertol et al., 2011; Hua & Zhu, 2020; Lemos et al., 2020), which explains the different ratios of the element in the two soils. The high reactivity of Cu and Cr with the soil can also explain these results (Campillo‐Cora et al., 2020) since they tend to remain in the soil layer that received PS application.…”

Section: Discussionmentioning

confidence: 99%

Slope and pig slurry rate may increase the transfer of chemical elements by surface water runoff

Grando

Gatiboni

Mumbach³

et al. 2023

Environmental Quality Mgmt

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There is a need to evaluate the interference of pig slurry rate and the terrain slope in the chemical elements losses from the soil. This work aimed to quantify water and chemical element losses by surface runoff due to terrain slope and pig slurry rate (PS) in two soils with contrasting textures. Two trials were evaluated in 2018 and 2019 in Cambisol and Nitisol. Rates of 0, 22.5, 45, and 90 m 3 ha −1 yr −1 of PS were applied superficially in sites with slopes ranging from 10% to 35%. Perennial forage grass Tifton 85 (Cynodon dactylon) was grown as summer crop and ryegrass (Lolium multiflorum) was sown in the cold seasons in a field environment. Were determined the runoff, the volume of water, and chemical elements (Al, Ca, P, Mg, Cd, Cr, Cu, Mn, Fe, Pb, and Zn) lost by the surface runoff after natural rainfall. Increasing land slope elevated water losses substantially, on average 23.4 times in Cambisol and 10.8 times in Nitisol. This increase resulted in average increases of 27.6 and 12.4 times in the losses of the chemical elements analyzed for Cambisol and Nitisol, respectively. There was a reduction in water losses by surface runoff due to increased PS rates applied in both sites. The increased PS rate affected the losses of Cr and Cu in Cambisol and P, Mg, Cd, and Cu in Nitisol.The clayey soil potentiated the water and chemical elements losses by surface runoff in relation to the soil with lower clay content. Regardless of the soil, water and chemical element losses are maximized at higher slopes.

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Losses of water, soil, and nutrients during high-intensity simulated rainfall in two soil management systems different sources of fertilization

Cited by 5 publications

References 25 publications

Sistema Santa Fé auxilia na redução do escoamento superficial e melhoria da qualidade da água?

Sistema Santa Fé auxilia na redução do escoamento superficial e melhoria da qualidade da água?

Soil loss and runoff in southern Brazil in conservation systems: a long-term experiment

Slope and pig slurry rate may increase the transfer of chemical elements by surface water runoff

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