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Response to Liu's comments on "The Kuroshio Intermediate Water is the major source of nutrients on the East China Sea continental shelf" by Chen (1996) ArchiMer
Chen, Cta.
Exchanges between the East China Sea (ECS) and the Kuroshio have been recalculated by taking into consideration the intra-annual variation of salinity on the shelf. Flux through the Taiwan Strait, previously unavailable data in the Yellow Sea and in the central and northern ECS, denitrification and ground water fluxes are now also considered. The Kuroshio Intermediate Water remains the major source of nutrients on the East China Sea continental shelf, with slightly more upwelling in the dry season than in the wet season.
Tipo: Text Palavras-chave: Mer de Chine orientale; Eau intermédiaire du Kuroshio; Upwelling; Bilan de nutriments; Dénitrification; East China Sea; Kuroshio Intermediate Water; Upwelling; Nutrient budgets; Denitrification.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00325/43654/43220.pdf
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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
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