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| Registros recuperados: 174 | |
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| Trevisan,Rodrigo Gonçalves; Freddi,Onã da Silva; Wruck,Flávio Jesus; Tavanti,Renan Rimoldi; Peres,Fernanda Salles Cunha. |
| ABSTRACT The production systems of upland rice culture in Mato Grosso are not consolidated yet while the effects of soil physical properties and their correlation with rice yield in crop-livestock integrated systems are not defined as well. Therefore, this study determined the spatial variability of physical properties of soil and rice cultivated in no-tillage system under different cover crops, using principal components analysis and geostatistics. The experiment was conducted in Santa Carmen, northern Mato Grosso. A regular grid with 100 sample points distributed in an area of 26,400 m2 was installed. Soil and rice samples were collected to determine rice variables and soil physical properties. The average rice yield was 1.70 Mg∙ha−1, ranging from 0.70... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Orysa sativa; Soil management; Agricultural sustainability. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100145 |
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| Timm,Luis C.; Oliveira,Julio C. M. de; Tominaga,Tania T.; Cássaro,Fabio A. M.; Reichardt,Klaus; Bacchi,Osny O. S.. |
| The quantification of soil water balance components was conducted in a sugarcane (Saccharum officinarum L.) field differently managed, as well as a qualitative analysis of the methodologies used for their estimation. The study was conducted in randomized block experiment with four replicates and three treatments: bare soil, mulched soil using trash left on the soil surface after harvest, and soil with burnt trash. The soil was classified as a Rhodic Kandiudalf, locally called 'Terra Roxa Estruturada', the experimental area having a slope of 7.4%. Run-off, soil water fluxes at the lower soil volume limit, and soil water storage changes were not affected by the different soil management practices. Furthermore, it was found that the evaluation of run-off and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water balance; Soil physical properties; Soil management. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662002000100011 |
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| Ramos,Júlio César; Bertol,Ildegardis; Barbosa,Fabrício Tondello; Bertól,Camilo; Mafra,Álvaro Luiz; Miquelluti,David José; Mecabô Júnior,José. |
| 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 (Lolium multiflorum Lam.) residue, with high soil cover and minimal roughness (HCR); no tilled soil covered by vetch (Vicia sativa L.) residue, with high soil cover and minimal roughness (HCV); chiseled soil after ryegrass crop removing the above-ground residues and keeping only the root system, with high roughness (HRR); chiseled soil after vetch crop removing the above-ground residues and keeping only... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hydric; Erosion; Soil management; Conservation tillage. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000300286 |
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| Santos,Maria Aparecida do Nascimento dos; Panachuki,Elói; Alves Sobrinho,Teodorico; Oliveira,Paulo Tarso Sanches de; Rodrigues,Dulce Buchala Bicca. |
| Water infiltration in the soil is an important hydrological process that occurs at the interface of the soil-atmosphere system; thus, the soil management practice used has a strong influence on this process. The aim of this study was to evaluate water infiltration in the soil and compare equations for estimating the water infiltration rate in an Ultisol after harvesting common bean (Phaseolus vulgaris L.) under simulated rainfall. Field tests with a rainfall simulator were carried out in three soil management systems: minimum tillage (MT), conventional tillage (CT), and no tillage (NT). In NT, four levels of plant residue on the soil surface were evaluated: 0, 3, 6, and 9 t ha-1. The models of Kostiakov-Lewis, Horton, and Philip were used to estimate the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Runoff; Soil management; Rainfall simulator. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500026 |
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| Concenço,G; Ceccon,G; Schwerz,F; Fonseca,I.C; Leite,L.F. |
| Intercropping systems involving corn are often subjected to stress caused by weeds, which usually result in 30-70 per cent yield loss when no control practice is applied. This study aimed to assess the composition of weed communities due to soil coverage, at neighboring areas submitted to distinct soil managements. The soil was collected at field and the study was conducted under a greenhouse in three steps: (1) weeds composition and importance within each treatment; (2) comparison between treatments (distinct crop and intercropping managements); (3) infestation in the area as a whole. The weed composition in the short term is influenced by the management of the area, but this shift requires some more years to be reflected at the soil seed bank. Some weed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil coverage; Soil management; Phytosociology. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582011000400011 |
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| Apiwat Sittipinyaphat; Oomra Cheunghom. |
| The objectives of this study were to compare the use of bio-fertilizers LDD 12 combination with compost between LDD recommendation and farmers use, which affect on rice (Khao Dowk Mali 105 variety) yield, the economic internal of return and soil chemical properties. Soil was the soil series group no.17 (Renu soil series). A randomized completely block design (RCBD) with 7 treatments were employed. The result of this study found that soil pH in all treatments was increased. Soil organic matter was increased (0.44-0.66%). The use of compost produced by farmer alone, compost produced by farmer with chemical fertilizer at the rate 1/2 and compost produced by farmer with chemical fertilizer at the rate 3/4 led to the highest available phosphorus in both 2 years... |
| Tipo: PhysicalObject |
Palavras-chave: Soil management; Compost; Biofertilizer; LDD 12; KDML 105; การจัดการดิน; ปุ๋ยหมัก; ปุ๋ยชีวภาพ; พด.12; ข้าวขาวดอกมะลิ 105. |
| Ano: 2012 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5399 |
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| Registros recuperados: 174 | |
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