Residue Management
Mostrando 13-24 de 89 artigos, teses e dissertações.
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13. Crop residue harvest for bioenergy production and its implications on soil functioning and plant growth: A review
ABSTRACT: The use of crop residues as a bioenergy feedstock is considered a potential strategy to mitigate greenhouse gas (GHG) emissions. However, indiscriminate harvesting of crop residues can induce deleterious effects on soil functioning, plant growth and other ecosystem services. Here, we have summarized the information available in the literature to id
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-05
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14. Performance of Flooded Rice Grown in Succession to Winter Cover Crops
ABSTRACT: Mean grain yield of flooded rice in southern Brazil has increased in recent years due to the use of high-yield cultivars and improvement of crop management practices. Nevertheless, stagnation in grain yields has been observed in some rice-producing regions. Adoption of conservation tillage systems based on cover crops may be a strategy to increase
Rev. Bras. Ciênc. Solo. Publicado em: 15/02/2018
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15. Returning Winter Cover Crop Residue Influences Soil Aggregation and Humic Substances under Double-cropped Rice Fields
ABSTRACT Residue management in cropping systems may improve soil quality. However, there are few studies on the effects of residue management on soil aggregation and carbon content in the humin (C-HUM), humic acid (C-HAF) and fulvic acid (C-FAF) fractions in South China. Therefore, the effects on soil aggregation and on the C-HUM, C-HAF, C-FAF from incorpora
Rev. Bras. Ciênc. Solo. Publicado em: 09/11/2017
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16. MANEJO DE RESIDUOS DE Eucalyptus grandis Hill ex Maiden EN SITIOS CONTRASTANTES
ABSTRACT In northeastern Argentina, very little is known about the impact of various techniques of management of residues from forest harvesting on soil properties. We carried out this study in two sites in Entre Ríos Province (Argentina): post-harvest of Eucalyptus grandis Hill ex Maiden stands in an Aquic Hapludert (S1) and in a Fluventic Hapludoll (S2).
Ciênc. Florest.. Publicado em: 2017-09
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17. Utilization and fate of phosphorus of different sources applied to cohesive soil of Amazonian periphery
ABSTRACT In the Amazonian region, P is often a primary factor limiting sustainable agrosystems. We compared the efficiencies of local aluminous phosphate (ALP) and single superphosphate (SSP) under a cover of leguminous residues to determine the fate of P sources in an Amazonian soil with hardsetting characteristics. The experiment followed a randomized bloc
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-06
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18. Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing Intensities
ABSTRACT Under integrated crop-livestock production systems (ICLS), plant and animal residues are important nutrient stocks for plant growth. Grazing management, by affecting the numbers of both plants and animals and the quality of residues, will influence nutrient release rates. The objective of this study was to evaluate the impact of grazing intensity on
Rev. Bras. Ciênc. Solo. Publicado em: 27/04/2017
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19. CLAY AND PHOSPHORUS LOSSES BY EROSION IN OXISOL WITH SUGARCANE RESIDUES
ABSTRACT Considering the importance of nutrients in the soil for the plants development and the soil quality conservation and the quantification relevance of them for proper soil management, the aims of this research were: (i) to quantify the clay loss, adsorbed and soluble P from interrill erosion influenced by the presence of sugarcane residues on the grou
Eng. Agríc.. Publicado em: 2016-12
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20. Carbon and Nitrogen Stocks and Humic Fractions in Brazilian Organosols
ABSTRACT Despite limited geographic expression of Organosols in Brazil, their high carbon storage capacity and natural environmental vulnerability justifies further studies on C and N stocks in these soils and their relationship to the nature of organic matter. Evaluation of physical and chemical properties of organic soils and their ability to store C is im
Rev. Bras. Ciênc. Solo. Publicado em: 03/11/2016
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21. Successive Cultivation of Soybean/Corn Intercropped with Urochloa brizantha topdressed with Nitrogen
ABSTRACT Corn intercropped with Urochloa brizantha (Syn, Brachiaria brizantha) has been indicated as a suitable alternative management practice for rational land use in crop-livestock production systems in the Cerrado region of Brazil. An experiment was carried out in Maracaju, MS, Brazil to evaluate the effect of sequences of soybean/second-crop corn system
Rev. Bras. Ciênc. Solo. Publicado em: 29/08/2016
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22. Water erosion in surface soil conditions: runoff velocity, concentration and D50 index of sediments in runoff
ABSTRACT Water erosion and contamination of water resources are influenced by concentration and diameter of sediments in runoff. This study aimed to quantify runoff velocity and concentration and the D50 index of sediments in runoff under different soil surface managements, in the following treatments: i) cropped systems: no-tilled soil covered by ryegrass (
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-06
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23. GERMINACIÓN Y EMERGENCIA DE Megathyrsus maximus VAR.maximus
ABSTRACT This work aimed to study the germination of Megathyrsus maximus seeds when exposed to high temperatures, as well as to evaluate the effects of different seed planting depths and sugarcane crop residue amounts on weed emergence. In the laboratory, germination and biomass of seeds with and without glumes were determined when exposed to 0, 40, 60, 80 a
Planta daninha. Publicado em: 2015-12
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24. Soil and crop residue CO2-C emission under tillage systems in sugarcane-producing areas of southern Brazil
Appropriate management of agricultural crop residues could result in increases on soil organic carbon (SOC) and help to mitigate gas effect. To distinguish the contributions of SOC and sugarcane (Saccharum spp.) residues to the short-term CO2-C loss, we studied the influence of several tillage systems: heavy offset disk harrow (HO), chisel plow (CP), rotary
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-10