Data/hora: 20/09/2024 22:25:00

Biblioteca(s): 	Embrapa Semiárido.	
Data corrente: 	16/07/1996	
Data da última atualização: 	31/07/2018	
Autoria: 	SOUZA, S. M. de; FELKER, P.	
Afiliação: 	SONIA MARIA DE SOUZA, CPATSA.	
Título: 	The influence of stock plant fertilization on tissue concentrations of N, P and carbohydrates and the rooting of Prosopis alba cuttings.	
Ano de publicação: 	1986	
Fonte/Imprenta: 	Forest Ecology and Management, v. 16, p. 1/4, p. 181-190, oct. 1986.	
Idioma: 	Inglês	
Conteúdo: 	Clonal propagation techniques are required for Prosopis due to great variability in biomass productivity, pod productivity, and nitrogen fixation from seed propagated stock. Previous studies identified a decline in the rooting percentage of cuttings taken from stock plants that were grown in the growth chamber and harvested every four weeks. To determine the influence of the mineral nutrient status of the stock plants on the rooting of cuttings, fertilized and nonfertilized Prosopis alba clone B2B50 stock plants were established under 1000 W metal halide lamps in the greenhouse. A complete macro- and micronutrient solution was used. The regrowth was harvested after 4, 8, 12, 16, and 20 weeks, and alternate nodes from each stem were taken for the rooting assay and for N, P, K. Ca, Mg, Fe, Zn an total available carbohydrate evaluation (N=79). The mean rooting percentage for the five harvest cycles was 58% for the fertilized stock plants, and 44% for the nonfertilized stock plants (P=0.087). There was no significant correlation between rooting percentage and leaf carbohydrate (P=0.964), stem carbohydrate (P=0.876) and leaf plus stem phosphorus (P=0.319). The monsignificant correlation between percent rooting and carbohydrates was negative (r=-0.018). However, there was a significant correlation with stem nitrogen and percent rooting (P=0.009) and inverse correlation between sten nitrogen and leaf carbohydrate content (r=-0.353, P=0.001). This suggests that unbalanced fertilizers, rich in nitrogen (...).	
Palavras-Chave: 	Fertilization.	
Thesagro: 	Algaroba; Enraizamento; Fertilidade; Nitrogênio; Prosopis Alba; Solo.	
Thesaurus Nal: 	nitrogen; phosphorus; rooting; soil.	
Categoria do assunto: 	K Ciência Florestal e Produtos de Origem Vegetal	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/180576/1/Forest-Ecology-Management-v.16-p.181-190-1986.pdf	
Registro original: 	Embrapa Semiárido (CPATSA)	
Exemplares: 	CPATSA - (8301-1) - UPC - AP - PP -  -  -  - DIS