Data/hora: 05/06/2024 10:07:27

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 06/09/1995
Data da última atualização: | 05/04/2017
Autoria: | EVANS, C. C.; ALLEN, S. E.
Título: | Nutrient losses in smoke produced during heather burning.
Ano de publicação: | 1971
Fonte/Imprenta: | OIKOS, v.22, n.2, p.149-154, 1971.
Idioma: | Inglês
Conteúdo: | 1. Common heather Calluna vulgaris (L.) Hull was burnt under simulated field conditions at various temperatures up to 750C. Of the elements tested and for the most severe burn, losses were greatest for N (57 per cent) and S (36 per cent). The other elements were lost in quantities which varied between 10 and 20 per cent and in th order K > Zn > Na > Cu > Fe > Mg > Ca > P > Mn and Si. 2. Laboratory experiments confirmed the above results and substantial amounts of Na, K, Fe, Zn and Cu as well as N and S appeared to be volatilized. 3. Quarts wool filters were used to trap smoke particulate matter and some tarlike condensates. Analysis of these deposits in relation to the original heather content gave recoveries of between 2.1 and 56.3 per cent and in the order Zu > Cu > Fe > K > Na > Ca > Mn > Mg > P. 4. Heather age, density and moisture together with wind speed all influence the severity of heather burning and should be taken into account to minimize nutrient losses.
Palavras-Chave: | Fire; Nutrient; Production.
Thesagro: | Fogo; Nutriente; Produção.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (29621-1) - ADC - SP - PP - SP14606 -  - 14606 - DIS