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	Provedor de dados AgEcon (2) Autor Kimani, Stephen K. (2) Kimenye, L.N. (1) Macharia, Jm. (1) Nyikal, Rose Adhiambo (1) Odera, Michael M. (1) Ramisch, J. (1) Mais... Palavra-chave Crop Production/Industries (1) Environmental Economics and Policy (1) Land Economics/Use (1) Natural resource capital (1) Net present values (NPV) (1) Nutrient budgets (1) Smallholder farmers (1) Soil organic matter (SOM) (1) Structural adjustment programs (SAPs) (1) Mais... Tipo do documento Conference Paper or Presentation (2) Ano 2006 (1) 2004 (1) País United States (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Economic Evaluation of Organic and Inorganic Resources for Recapitalizing Soil Fertility in Smallholder Maize-based Cropping Systems of Central Kenya AgEcon Ramisch, J.; Nyikal, Rose Adhiambo; Kimenye, L.N.; Kimani, Stephen K.; Macharia, Jm.. Structural adjustments programs (SAPs) in the last two decades have eliminated all farm-support programs leading to low usage of fertilizers by Kenyan smallholders. One way of addressing this problem is use of organic nutrient resources. This paper examines their cost-effectiveness as capital investments in replenishment of Nitrogen (N), Phosphorus (P), Potassium (K) and soil organic matter (SOM) in smallholder, Maize-based cropping systems. On-farm trials were established in Maragwa and Kirinyaga Districts in 2003/04. Maize was planted in 3 replicates in randomised complete block design (RCBD) using different levels of organic and inorganic fertilizer resources. A blanket rate of 40kg P/ha was applied in all treatment except the control to increase... Tipo: Conference Paper or Presentation Palavras-chave: Natural resource capital; Net present values (NPV); Nutrient budgets; Smallholder farmers; Soil organic matter (SOM); Structural adjustment programs (SAPs); Crop Production/Industries; Land Economics/Use. Ano: 2006 URL: http://purl.umn.edu/25780 Payments for Environmental Services under Emerging International Agreements: A Basis for Inclusion of Agricultural Soil Carbon Sinks. AgEcon Odera, Michael M.; Kimani, Stephen K.. This review places in context the role agricultural soils play in global carbon dynamics, and their potential interaction with climate change through soil carbon sequestration. The paper first examine the potential of soils as carbon sinks, agricultural practices and dynamics in soil organic carbon, emerging agreements on payments for environmental services (PES) that mitigate global warming through enhanced carbon sinks, exclusion of agricultural activities in PES under Kyoto Protocol, and the basis for inclusion of agricultural soil carbon sinks through sustainability based production systems. Soils are one of the planet’s largest sinks for carbon and hold potential for expanded carbon sequestration through changes in management. The global soil organic... Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy. Ano: 2004 URL: http://purl.umn.edu/9539 Registros recuperados: 2 Primeira ... 1 ... Última

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