Omissāo de macronutrientes no crescimento e no estado nutricional de capim-elefante (cv. Mott) cultivado em solução nutritiva


Autoria(s): Avalhaes, Cintia Carla; De Mello Prado, Renato; Rozane, Danilo Eduardo; Romualdo, Liliane Maria; Correia, Marcus André Ribeiro
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

01/05/2009

Resumo

The objective of this work was to evaluate the effect of omission of macronutrients in the growth and the nutritional state of elephant-grass plants (Pennisetum purpureum Shum cv. Mott). The experiment was developed in the FCAV/UNESP, in Jaboticabal-SP,Brazil, using nutrient solution. The experimental design was completely randomized blocks, with seven treatments (the complete solution proposed by Hoagland & Amon (1950) and the individual omission of N, P, K, Ca, Mg and S, in these solution), in three repetitions. Pre-germinated plants were placed in pot (5 dm3), containing the nutrient solution, which was aerated constantly during the experimental period and the respective treatments, with three replications each. Weekly, the height of the plants, the leaf number, apex diameter and number of tillers were evaluated as well as plant nutritional state. The omission of N, P, K, Ca, Mg and S limited the production of dry weight of shoot the elephant grass, compared to the full treatment. The deficiency of a macronutrient, in addition to promoting reduction of its content in the shoot, resulted in reducing the accumulation of most macronutrients, with resultant morphological changes, translated as characteristic symptoms of deficiency.

Formato

215-222

Identificador

http://ojs.c3sl.ufpr.br/ojs2/index.php/agraria/article/view/14528

Scientia Agraria, v. 10, n. 3, p. 215-222, 2009.

1519-1125

1983-2443

http://hdl.handle.net/11449/70996

2-s2.0-84858706850

2-s2.0-84858706850.pdf

Idioma(s)

por

Relação

Scientia Agraria

Direitos

openAccess

Palavras-Chave #Forage #Nutritional disorders #Pennisetum purpureum Shum
Tipo

info:eu-repo/semantics/article