|
|
|
| Registros recuperados: 19 | |
|
|
| Zanatta,Josiléia Acordi; Vieira,Frederico Costa Beber; Briedis,Clever; Dieckow,Jeferson; Bayer,Cimélio. |
| ABSTRACT: Management systems to improve soil quality are essential for agricultural and environmental sustainability. We assessed the quality of soil management systems applied to a subtropical Acrisol in terms of the carbon management index (CMI), the stratification ratio for total organic carbon (SR-TOC) and light fraction of organic matter (SR-LF). In addition, we examined their relationship to chemical, physical and biological soil quality indicators, as well as to maize yield. The study was conducted on a long-term experiment (18 years) in southern Brazil involving two different systems [no tillage (NT) and conventional tillage (CT)], two cropping systems [black oat/maize (O/M) and black oat + vetch/maize + cowpea (OV/MC)] and two nitrogen fertilizer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation agriculture; Cropping systems; No-till; Quality indicators. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001600501 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| DAYOU, Ephrème Dossavi. |
| The need for efficient agricultural equipment that is compatible with the characteristics of farms remains a crucial issue in Africa. The aim of the work was to design, fabricate and test a seeder for direct seeding. The method used consisted in collecting the farmers’ needs and the weakness of some direct seeders in literature review. Then, the design of the planter components was carried out based on the characteristics of soil types and seeds in Benin Republic. Finally, a technical drawing of the seeder was made on the computer. The seeder was manufactured in a mechanical workshop and tested in the field. This equipment is capable of sowing on unplowed soil, with an average capacity of 0.90 ha/h for two rows, a working speed of 5.76 km/h and a seed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Planter; Local design; Agricultural mechanization; Conservation agriculture; Benin. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6223 |
| |
|
|
| Volsi,Bruno; Bordin,Ivan; Higashi,Gabriel Eiji; Telles,Tiago Santos. |
| ABSTRACT: Even in areas of predominance of Caiuá sandstone, with soils of low natural fertility that are highly susceptible to erosion and degradation processes, farmers have adopted systems with little diversification, because they believe that they provide a greater economic return. However, agricultural practices such as crop rotation can bring agronomic benefits in terms of conservation agriculture, in addition to economic gains, circumventing edaphoclimatic difficulties in the region. In this context, the objective of this study is to verify whether no-till crop rotation systems are economically profitable, in a Caiuá sandstone area in the northwest region of the Brazilian state of Paraná. To this end, an experiment was conducted in the municipality... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cost analysis; Agricultural production; Agricultural economy; Rural administration; Conservation agriculture. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000200931 |
| |
|
|
| Osorio Hernández, Victorino. |
| Se estudió la influencia que ejercen los residuos, el efecto de los diferentes tipos de labranza y la fertilización, sobre el contenido de humedad, desarrollo y rendimiento de trigo. Se incluyen resultados de dos ensayos, localizados en la parte noroeste de México, en el Centro Experimental Norman E. Borlaug en un suelo Chromic Haplotorrert (Hyposodic Vertisol (Calcaric, Chromic)), bajo en materia orgánica (<1%), en condiciones semi-áridas. Se comparan prácticas agronómicas que difieren en tipo de labranza (camas permanentes y camas convencionales), manejo de rastrojo (dejar, empacar o quemar), dosis de fertilización de N bajo diferentes regímenes de riego y con rotación maíz-trigo. Se midieron el contenido de humedad en el perfil (0-60 cm) antes y... |
|
Palavras-chave: Agricultura de conservación; Cama permanente; Manejo de residuos; Conservation agriculture; Permanent beds; Straw management; Maestría; Hidrociencias. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/355 |
| |
|
| |
|
|
| Martins,Bruno Henrique; Araujo-Junior,Cezar Francisco; Miyazawa,Mario; Vieira,Karen Mayara. |
| ABSTRACT Humic substances (HS) comprise the passive element in soil organic matter (SOM), and represent one of the soil carbon pools which may be altered by different cover crops and weed control methods. This study aimed to assess HS distribution and characteristics in an experimental coffee crop area subjected to cover crops and cultural, mechanical, and chemical weed control. The study was carried out at Londrina, in the state of Paraná, southern Brazil (23°21’30” S; 51°10’17” W). In 2008, seven weed control/cover crops were established in a randomized block design between two coffee rows as the main-plot factor per plot and soil sampling depths (0-10 cm, 10-20 cm, 20-30 cm and 30-40 cm) as a split-plot. HS were extracted through alkaline and acid... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: UV-Vis spectroscopy; Conservation agriculture; Soil organic matter; Carbon content; Chemical fractionating. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000400371 |
| |
|
| |
|
|
| Torres Guerrero, Carlos Alberto. |
| Los suelos de México han sido degradados en los últimos años en buena parte por la acción del hombre. Debido a las prácticas agronómicas empleadas en la mayor parte del país (labranza convencional, monocultivos y remoción de residuos vegetales de cosechas anteriores) los suelos con potencial agrícola se han visto disminuidos en su productividad. La Agricultura de Conservación (AC) ofrece un aprovechamiento sustentable del recurso suelo, asegurando su estabilidad y estructura, con el propósito de aumentar los rendimientos de los cultivos. El experimento que se reporta es de larga duración. Se inició en 1991 en el Batán Texcoco, Estado de México, en el Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT) y consta de 32 parcelas con diferentes... |
|
Palavras-chave: Labranza; Agricultura de conservación; Raíces; Agregación; Maestría; Edafología; Tillage; Conservation agriculture; Roots; Aggregation. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1755 |
| |
|
|
| Telles,Tiago S.; Righetto,Ana J.; Lourenço,Marco A. P.; Barbosa,Graziela M. C.. |
| ABSTRACT The no-tillage system participatory quality index aims to evaluate the quality and efficiency of soil management under no-tillage systems and consists of a weighted sum of eight indicators: intensity of crop rotation, diversity of crop rotation, persistence of crop residues in the soil surface, frequency of soil tillage, use of agricultural terraces, evaluation of soil conservation, balance of soil fertilization and time of adoption of the no-tillage system. The aim of this study was to assess the extent to which these indicators correlate with the no-tillage system participatory quality index and to characterize the farmers who participated in the research. The data used were provided by ITAIPU Binacional for the indicators of the no-tillage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Farmers; Conservation agriculture; Crop rotation; Soil and water conservation; Sustainable agriculture. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000200128 |
| |
|
| |
|
|
| Fuentes-Llanillo, Rafael; Soares Junior, Dimas; Carneiro, Sergio Luis; Carvalho, Adenir De; Marcolini, Ciro. |
| O presente artigo avaliou a rentabilidade do conjunto de lavouras de grãos sob plantio direto, utilizando a análise multicaso de treze estabelecimentos agropecuários familiares de grãos no Norte do Paraná, Brasil, através da avaliação das margens brutas por hectare-ano ao longo de seis safras anuais entre 1998/99 e 2003/04. Averiguou-se ainda a existência ou não de uma relação entre a rentabilidade e os diferentes tipos de plantio direto com respeito ao nível de revolvimento do solo, à realização de rotação de culturas e ao acesso a maquinários apropriados.---------------------------------------------This article evaluated the profitability of the mix of grain crops under no-tillage, in a multiple case analysis of thirteen family enterprises of grains in... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Margem bruta; Plantio direto; Agricultura de conservação; Agricultura familiar; Gross margin; No tillage; Conservation agriculture; Household farming; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/108838 |
| |
|
| |
|
| |
|
| |
|
| |
| Registros recuperados: 19 | |
|
|
|
