Data/hora: 09/06/2024 08:40:17

Provedor de dados: 	65	
País: 	Brazil	
Título: 	Nitrogen and phosphorus uptake efficiency in Indian mustard cultivated during three growth cycles in a copper contaminated soil treated with biochar	
Autores: 	Gonzaga,Maria Isidória Silva; Souza,Danyelle Chaves Figueiredo de; Almeida,André Quintão de; Mackowiak,Cheryl; Lima,Idamar da Silva; Santos,José Carlos de Jesus; Andrade,Raquel Santos de.	
Data: 	2019-01-01	
Ano: 	2019	
Palavras-chave: 	Biochar; Pyrogenic carbon; Copper contamination; Plant nutrition; Brassica juncea.	
Resumo: 	ABSTRACT:  Biochar has been used worldwide as an efficient soil amendment due to its beneficial interaction with soil particles and nutrients; however, studies on the effect of biochar on the availability of nutrients such as N and P in tropical soils are still missing. The objective of the study was to evaluate the effect of different types and doses of biochars on the concentration and uptake of N and P in Indian mustard plants (Brassica juncea L.) grown in a Cu contaminated soil during three successive growth cycles. The greenhouse experiment was set up as randomized block design in a 3x3 factorial scheme, with 3 types of biochars (coconut shell, orange bagasse and sewage sludge) and three rates of application (0, 30 and 60t ha-1), and 4 replicates. Biochar increased plant growth by approximately 30 to 224%; however, the orange bagasse biochar was the most effective. Biochar reduced plant N concentration in approximately 15-43%, regardless of the rate of application, indicating the need to carefully adjust N fertilization. In the last growth cycle, biochar from coconut shell and orange bagasse improved the N uptake efficiency suggesting a better amelioration effect with ageing in soil. Biochar did not affect P nutrition in Indian mustard to a great extent; however, it significantly decreased the N:P ratio in the plant.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100250	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/0103-8478cr20170592	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.49 n.1 2019	
Fonte: 	info:eu-repo/semantics/openAccess