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Best Management Practices (BMPs) for Nitrogen Fertilizer in Forage Grasses. Infoteca-e
SERRA, A. P.; MARCHETTI, M. E.; DUPAS, E.; ENSINAS, S. C.; LOURENTE, E. R. P.; SILVA, E. F. da; ALMEIDA, R. G. de; CARDUCCI, C. E.; ALOVISI, A. M. T..
There is a concern about the growing population and limitation in natural resources which are taking the population to direct its agricultural systems into a more productive and efficient activity, looking to avoid a negative impact on the surrounding environment. The industry energy expended to produce nitrogen (N)-fertilizer is considered an indirect consumption of energy in agriculture, which is higher with an increasing forage yield. Nitrogen is the key nutrient associated with high-yielding production in forage grass and grain crops. The aim of this chapter is to introduce the best management practices (BMPs) for N-fertilizer application in forage grasses to improve N-use efficiency, since the most economical way to feed livestock is forage plants...
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: N-fertilizer recovery; N-use efficiency; Brachiaria sp; Panicum Maximum; Soil fertility.
Ano: 2018 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1102573
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Leaf life span and nitrogen content in semideciduous forest tree species (Croton priscus and Hymenaea courbaril) Scientia Agricola
Haddad,Claudia Regina Baptista; Lemos,Damiani Pereira; Mazzafera,Paulo.
In comparison to deciduous species, evergreen plants have lower leaf nutrient contents and higher leaf life span, important mechanisms for nutrient economy, allowing the colonization of low fertility soils. Strategies to conserve nitrogen in two semideciduous tropical forest tree species, with different leaf life spans were analyzed. The hypothesis was the fact that the two species would present different nitrogen conservation mechanisms in relation to chemical (total nitrogen, protein, chlorophyll, and proteolytic activity), functional (leaf life span, N-use efficiency, and N-resorption efficiency), morphological (specific leaf mass) leaf characteristics, and total nitrogen in the soil. Hymenaea courbaril L. presented lower nitrogen compounds in leaves,...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Leaf life span; Specific leaf mass; N-resorption efficiency; N-use efficiency; Atlantic forest.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400018
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Nitrogen-use efficiency and economic efficiency of slow-release N fertilisers applied to irrigated turfs in a Mediterranean environment IPB - Escola Superior Agrária
Arrobas, Margarida; Parada, Maria; Magalhães, Paula; Rodrigues, M.A..
The effect of three fertilisers that delay the bioavailability of nitrogen (N) in the soil was compared with ammonium nitrate and a zero N control in two irrigated turfs in NE Portugal. The fertilisers used were: Floranid permanent 16-7-15 (slow-release, IBDU/Isodur fertiliser); Basacote plus 9M 16-8-12 (controlled-release fertiliser, copolymer ethylene acrylic); Nitroteck 20-8-10 (stabilized fertiliser, dicyandiamide as nitrification inhibitor + coating with polyterpene) and Nitrolusal (ammonium nitrate, 20.5% N), applied all at a rate of 120 kg N ha-1. Nitrolusal was split into two fractions of 60 kg N ha-1. Phosphorus (P) and potassium (K) rates were balanced among treatments by using superphosphate (18% P2O5) and potassium chloride (60% K2O). The...
Tipo: Article Palavras-chave: Controlled-release fertilisers; Economic efficiency of fertilisation; N-use efficiency; Slow-release fertilisers; Stabilized fertilisers; Turfgrass.
Ano: 2011 URL: http://hdl.handle.net/10198/6223
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