https://socictopen.socict.org/files/original/d2370f6fc5dea6fff2f136b94b6e3925.pdf 3fc3156ad4c939a45bb905528fa199be Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Agricultura sostenible Description An account of the resource Dominio científico: Agricultura sostenible Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource ATRIBUTOS QUÍMICOS DO SOLO UTILIZANDO COMPOSTO ORGÂNICO EM CONSÓRCIO DE ALFACE-CENOURA SOIL CHEMICAL ATTRIBUTES USING ORGANIC COMPOST IN LETTUCE-CARROT INTERCROPPING Creator An entity primarily responsible for making the resource Angela Maria Quintão Lana, Márcio Sampaio Pimentel, Helvécio De-Polli De-Polli Description An account of the resource  A utilização indiscriminada de fertilizantes responde por problemas relacionados à lixiviação e escoamento superficial, tornando mais negativo o balanço energético na olericultura. Por este prisma, a agricultura orgânica busca otimizar a utilização de recursos naturais na propriedade e evitar desperdícios pela adoção de práticas conservacionistas. Dessa forma, dois experimentos de consórcios de alface-cenoura, submetidos a 0 t ha-1, 12 t ha-1, 24 t ha-1 e 48 t ha-1 de composto orgânico, foram realizados em 2000, no município de Seropédica, RJ, com o objetivo de monitorar os teores de P, K, Ca, Mg e pH, em Argissolo Vermelho-Amarelo. O delineamento experimental foi em blocos ao acaso, com cinco repetições. Os tratamentos foram combinados em esquema de parcela subdividida no tempo, sendo as doses de composto orgânico as parcelas, e as coletas de solo as subparcelas. As coletas de solo foram realizadas na profundidade de 0-10 cm, 15 dias antes da instalação (DAI), 0, 6, 57 e 101 dias após plantio (DAP), no primeiro experimento, e 8 DAI, 1, 6, 60 e 116 DAP, para o segundo experimento. Quando submetido a doses crescentes de composto orgânico, independentemente do composto, P e K responderam às doses, enquanto Ca e Mg foram influenciados pela qualidade do composto. O período de máxima disponibilidade de P, K, Ca e Mg às plantas foi aos 6 DAP, em ambos os experimentos. As maiores correlações foram obtidas em P x Ca, P x Mg e K x Ca e apresentaram variação com a qualidade do composto orgânico. PALAVRAS-CHAVE: Dinâmica de nutrientes; fósforo; potássio; adubação orgânica. Indiscriminate use of fertilizers is responsible for problems as leaching and surface runoff, making more negative the energy balance in agroecosystems. The organic soil management using biological practices avoids waste and optimizes the exploration of natural resources. Two experiments, with intercropped lettuce and carrot and fertilized with organic compost (0 t ha-1, 12 t ha-1, 24 t ha-1, and 48 t ha-1), were conducted in Seropédica, Rio de Janeiro State, Brazil, during the year 2000, to observe P, K, Ca, and Mg levels, and pH in an Ultisol. Twenty treatments were evaluated using a complete randomized block design, with four replications. The treatments were combined as plots split in time, using doses of organic compost as main plots, and five collecting times as split plots. Soil was sampled at 0-10 cm, before and during the experimental period: 15 days before installation (DBI), 0, 6, 57, and 101 days after planting (DAP), in the first experiment, and 8 DBI, 1, 6, 60, and 116 DAP, in the second. P and K reflected the compost doses, independently of compost type, while Ca and Mg were dependent on compost quality. The period of maximum availability of P, K, Ca, and Mg occurred at 6 DAP, for both experiments. Highest correlations occurred between P and Ca, P and Mg, and K and Ca, which were associated with organic compost quality. KEY-WORDS: Nutrients dynamics; phosphorus; potassium; organic manure. Date A point or period of time associated with an event in the lifecycle of the resource 2009 Subject The topic of the resource adubação orgânica, dinámica de nutrientes, fósforo, potássio Identifier An unambiguous reference to the resource within a given context 10.5216/pat.v39i3.3992 Source A related resource from which the described resource is derived Pesquisa Agropecuária Tropical Publisher An entity responsible for making the resource available Universidade Federal de Goiás Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Agriculture (General) Relation A related resource <a href="http://www.revistas.ufg.br/index.php/pat/article/view/3992" target="_blank" rel="noreferrer noopener">http://www.revistas.ufg.br/index.php/pat/article/view/3992</a>