Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Agrociencia (1) Rev. Bras. Ciênc. Solo (1) Autor Delgado,Jorge A. (2) Alwang,Jeffrey (1) Botello,Ruben (1) Garza,Héctor Mario Quiroga (1) Lindemann,William C. (1) Mamani,Pablo (1) Saavedra,Ana K. (1) Wong,José Antonio Cueto (1) Mais... Palavra-chave Annual ryegrass (1) Denitrification (1) Food security (1) High altitude cropping systems (1) Nitrate leaching (1) Nitrogen use efficiency (1) Salinity (1) Solanum tuberosum L. (1) Sudangrass (1) Sustainable system (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (1) 2009 (1) País Brazil (1) Mexico (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última 15N uptake fom manure and fertilizer sources by three consecutive crops under controlled conditions Rev. Bras. Ciênc. Solo Garza,Héctor Mario Quiroga; Delgado,Jorge A.; Wong,José Antonio Cueto; Lindemann,William C.. There are several regions of the world where soil N analysis and/or N budgets are not used to determine how much N to apply, resulting in higher than needed N inputs, especially when manure is used. One such region is the North Central "La Comarca Lagunera", one of the most important dairy production areas of Mexico. We conducted a unique controlled greenhouse study using 15N fertilizer and 15N isotopic-labeled manure that was labeled under local conditions to monitor N cycling and recovery under higher N inputs. The manure-N treatment was applied only once and was incorporated in the soil before planting the first forage crop at an equivalent rate of 30, 60 and 120 Mg ha-1 dry manure. The 15N treatments were equivalent to 120 and 240 kg ha-1 (NH4)2SO4-N... Tipo: Info:eu-repo/semantics/article Palavras-chave: Denitrification; Nitrogen use efficiency; Annual ryegrass; Salinity; Sudangrass. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000500018 A new N index to assess nitrogen dynamics in potato (Solanum tuberosum L.) production systems of Bolivia Agrociencia Saavedra,Ana K.; Delgado,Jorge A.; Botello,Ruben; Mamani,Pablo; Alwang,Jeffrey. Bolivia is South America's poorest country, with over 80 % of the rural population under the poverty line and agricultural productivity is closely inversely correlated with poverty in rural Bolivia. Potato (Solanum tuberosum L.) is one of the most important crops for food security in Bolivia, where it is grown with traditional methods, and national-level yields are low. Traditional management of potato involves use of organic amendments (animal manures) to supply N. Enhanced N management has the potential to raise potato yields and reduce rural poverty, yet there is a lack of information about improving nitrogen management practices in potato production areas where traditional systems predominate. A N index for traditional agricultural systems in Bolivia... Tipo: Info:eu-repo/semantics/article Palavras-chave: Food security; High altitude cropping systems; Nitrate leaching; Solanum tuberosum L.; Sustainable system. Ano: 2014 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952014000700001 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco