Data/hora: 09/06/2024 17:50:03

Biblioteca(s): 	Embrapa Arroz e Feijão; Embrapa Soja.	
Data corrente: 	22/05/2014	
Data da última atualização: 	22/05/2014	
Autoria: 	FAGERIA, N. K.; GHEYI, H. R.; CARVALHO, M. C. S.; MOREIRA, A.	
Afiliação: 	NAND KUMAR FAGERIA, CNPAF; H. R. GHEYI; MARIA DA CONCEICAO SANTANA CARVALHO, CNPAF; ADONIS MOREIRA, CNPSO.	
Título: 	Root growth, nutrient uptake, and nutrient-use efficiency by roots of tropical legume cover crops as influenced by phosphorus fertilization.	
Ano de publicação: 	2014	
Fonte/Imprenta: 	In: INOVAGRI INTERNATIONAL MEETING, 2., 2014, Fortaleza. Anais... Fortaleza: Instituto de Pesquisa e Inovação na Agricultura Irrigada, 2014.	
Descrição Física: 	1 CD-ROM.	
DOI: 	http://dx.doi.org/10.12702/ii.inovagri.2014-a606	
Idioma: 	Inglês
Português	
Conteúdo: 	Root is an important organ which supplies water and nutrients to growing plants. Data related to root growth and nutrient uptake by tropical legume cover crops are limited. The objective of this study was to evaluate root growth of tropical legume cover crops and nitrogen and phosphorus uptake and use efficiency under different phosphorus (P) levels. The P levels used were 0 (low), 100 (medium) and 200 (high) mg kg-1 of soil and 5 cover crops were evaluated. Root dry weight, maximum root length, specific root length were significantly influenced by P and cover crop treatments. Maximum values of these root growth parameters were achieved with the addition of 100 mg P kg-1 soil. The P x cover crops interaction for all the macro and micronutrients, except Mn was significant, indicating variation in uptake pattern of these nutrients by cover crops with the variation in P rates. Cover crops which produced higher root dry weight also accumulated higher amount of N and P compared to cover crops which produced lower root dry weight. Higher uptake of N compared to other nutrients by cover crops indicated that use of cover crops in the cropping systems can reduce loss of NO3- from soil-plant systems.	
Palavras-Chave: 	Cumprimento radicular; Peso seco da raiz; Peso seco do caule; Relação raiz-parte aérea.	
Thesagro: 	Fertilizante fosfatado; Fósforo; Nitrogênio; Raíz.	
Categoria do assunto: 	--
P Recursos Naturais, Ciências Ambientais e da Terra	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/102475/1/I442T662.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/126626/1/ROOT-GROWTH-NITROGEN-AND-PHOSPHORUS-UPTAKE-AND-USE-EFFICIENCY-IN.pdf	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (32681-1) - UPC - AA - CD - 2014.001 -  - 2014.001 - DIS
CNPSO - (36108-1) - UPC - AA - DD -  -  -  - DIS