Desenvolvimento do Sistema de Plantio Direto no Brasil: Histórico, Implantação e Culturas Utilizadas

Fernandes, Carlos Henrique dos Santos; Tejo, Débora Perdigão; Arruda, Klever Márcio Antunes

doi:10.17921/1415-5141.2019v23n2p83-88

Cited by 6 publications

(4 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Individual evaluations of the sources of variation in the plots showed that the succession crops significantly affected potential acidity (H+Al), magnesium, and phosphorus. This was related to the NTF, which enhances soil chemical attributes by increasing surface OM and nutrient cycling (Fernandes et al, 2019). In contrast, the other variables, such as pH, the sum of bases (SB), CEC, base saturation (V%), aluminum, calcium, OM, copper, iron, manganese, and zinc, were not affected by succession crops (Tables 1, 2, and 3).…”

Section: Resultsmentioning

confidence: 95%

Physicochemical characterization of oxisol subjected to succession culture

Laurindo,

Smaniotto,

Morais

et al. 2023

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

No-till farming is the practice closest to the concept of sustainable agriculture. The minimum soil movement and continuous contribution of crop residues to the farming system reduce erosion, mitigate the greenhouse effect, increase the organic matter content, and improve the physical and chemical quality of the soil. This study aimed to assess the effect of five-year succession cropping on the physical and chemical attributes of oxisol. The crops were sown for five consecutive years in the same plots, using a randomized block design in split plots with four replicates. The plots were crops grown in succession to soybean, namely Congo grass (Urochloa ruziziensis syn. Brachiaria ruziziensis), Congo grass intercropped with maize (Zea mays L.), pearl millet (Pennisetum glaucum), sorghum (Sorghum bicolor L.), maize, and slender leaf rattlebox (Crotalaria ochroleuca). The subplots were the following sampled soil layers: 0-5, 5-10, and 10-20 cm. The physicochemical attributes of these three soil layers were evaluated. Pearl millet cycled K efficiently, providing the soil with K concentrations equivalent to those of the K fertilization treatments. No single crop or intercrop increased the soil P concentration. Congo grass stood out for its ability to increase the Mg concentration. The 0-5 cm soil layer had the best physicochemical attributes based on the accumulated organic matter.

show abstract

Section: Resultsmentioning

confidence: 95%

Physicochemical characterization of oxisol subjected to succession culture

Laurindo,

Smaniotto,

Morais

et al. 2023

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

show abstract

“…For environments with these characteristics, the evolution of Brazilian agriculture has shown new production models by incorporating the principles of conservationist agriculture, such as the no-tillage system, livestock crop integration, forest livestock crop integration, and agroforestry systems, which enable the sustainable use of land and allow efficient use of available local resources (BALBINO et al, 2011;DONAGEMMA et al, 2016;FERNANDES et al, 2019).…”

Section: Principal Component Analysis (Pca)mentioning

confidence: 99%

Natural fertility and intrinsic fragility of soils in the Brazilian Cerrado

Cassol,

Arruda,

Alovisi

et al. 2023

Rev. Agro. Amb.

View full text Add to dashboard Cite

This study aimed to evaluate the attributes of natural fertility and intrinsic fragility of the soils of Ivinhema River Basin (BHI), to subsidize agricultural development projects and environmental control and monitoring bodies. For this purpose, 62 soil samples were collected, at a depth of 0 to 20 cm, in areas of native vegetation belonging to the state of Mato Grosso do Sul – Brazil. The characteristic climate of the study area is of the humid mesothermal subtype (Cfa) without drought. The predominant vegetation is of the Cerrado type and the geological substrate is predominantly composed of the Serra Geral and Caiuá Formation. The samples were air-dried and the physical attributes (sand, silt, and clay) and chemical variables (pH H2O, CaCl2, KCl, ∆pH, Al3+, m%, H + Al, Ca2+, Mg2+, K+, CEC, SB, V%, OC, P, Cu, Fe, Mn, and Zn) were determined according to methodologies in Embrapa's soil analysis methods manual. The data obtained were evaluated by descriptive statistics and principal component analysis. The results showed a great variety of soils inside the basin, whose natural fertility was high for the Leptsol, Regosol, and Nitisol soils, and low for the Argiluvic Plinthosol, Petroplinthic Plinthosol, and Planosol soils. The sandy soils showed lower levels of organic carbon and negative surface loads, which shows less capacity to retain cations essential to plant nutrition and less retention of environmental contaminants if any. Regarding the textural fragility of the soils of BHI, it was possible to verify the high sensitivity of the soil to erosion and susceptibility to the contamination of groundwater or infiltrated water. The data shown in research can fill the gaps of knowledge and/or for adapting conservation practices of agricultural soils that are more susceptible to erosive processes, as well as for environmental control and monitoring bodies and/or studies of area recovery and maintenance of soil fertility.

show abstract

“…14 nutrientes y ahorro de combustible. En 1991 empezó el escalamiento del SPD para la siembra de maíz en Brasil [10][11].…”

Section: Metodología De Investigaciónunclassified

Hitos tecnológicos que cambiaron el rol de Brasil en la producción de maíz: 30 años de crecimiento para convertirse en importante actor del escenario mundial, una revisión

Guimarães

Duraes

Pastina

et al. 2022

Av. Cienc. Ing. (Quito)

View full text Add to dashboard Cite

En los últimos 30 años (cosechas agrícolas de 1991/92 a 2021/2022), el maíz ha vivido una verdadera revolución en Brasil. Actualmente, el país se ha consolidado como el tercer productor y segundo exportador de este cereal, con una producción de más de 100 millones de toneladas de este grano por año agrícola. En este período, el cultivo de soja se destaca como el gran impulsor de los avances tecnológicos, llevando al maíz y a otros cultivos a posiciones más destacadas y transformando los sistemas de producción de granos; que antes eran de monocultivo o rotación, a sistemas más intensificados, con dos (o más) cultivos agrícolas por año en la misma área. La región del Cerrado brasileño, antes considerada no apta para la agricultura, es hoy el gran granero de la producción de granos de Brasil. En estas tres décadas de escalada en la producción de maíz, se destacan algunos hitos legales y tecnológicos, como la Ley de Protección de Cultivares y su reglamento (desde 1997), el Sistema de Siembra Directa, el cultivo de maíz en segunda cosecha o “safrinha” (después de la soja) y el uso de biotecnologías. Estos factores fueron determinantes para que el crecimiento de la producción de maíz superara en más de 3,6 veces el volumen de la campaña agrícola 1991/92, mientras que el área destinada al cultivo de maíz aumentó sólo 1,5 veces. Los incrementos en la productividad están ligados a tecnologías y conocimientos aplicados a la gestión de los sistemas productivos, en el binomio soja-maíz, y no solo en un cultivo aislado; permitiendo mayores avances en la producción bruta de ambos granos (rendimientos recientes en la cosecha de maíz son unas 2,5 veces mayores que hace 30 años). Este trabajo presenta datos y hechos que permitieron a Brasil salir de una posición de vulnerabilidad, en cuanto a la oferta de grano de maíz, para convertirse en un actor importante en la producción y comercialización de este cereal a nivel mundial.

show abstract

Desenvolvimento do Sistema de Plantio Direto no Brasil: Histórico, Implantação e Culturas Utilizadas

Cited by 6 publications

References 20 publications

Physicochemical characterization of oxisol subjected to succession culture

Physicochemical characterization of oxisol subjected to succession culture

Natural fertility and intrinsic fragility of soils in the Brazilian Cerrado

Hitos tecnológicos que cambiaron el rol de Brasil en la producción de maíz: 30 años de crecimiento para convertirse en importante actor del escenario mundial, una revisión

Contact Info

Product

Resources

About