Data/hora: 03/06/2024 06:23:09

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 07/02/2008
Data da última atualização: | 14/02/2008
Autoria: | DANTAS, B. F.; PEREIRA, M. S.; RIBEIRO, L. de S.; MAIA, J. L. T.; SILVA, D. J.; DUENHAS, L. H.; LIMA, M. A. C. de; BASSOI, L. H.
Título: | Metabolic responses of guava trees irrigated withdifferent N and K levels in São Francisco Valley.
Ano de publicação: | 2007
Fonte/Imprenta: | Revista Brasileira de Fruticultura, Jaboticabal, v. 29, n. 2, p. 323-328, ago. 2007.
ISSN: | 0100-2945
Idioma: | Inglês
Conteúdo: | The guava (Psidium guajava L.) cv. Paluma has been cultivated in São Francisco Valley, Northeastern of Brazil, for in natura consumption and processing purposes. In spite of its importance, there are few scientific knowledge regarding guava physiology, nutrition, irrigation and fertigation. The objective of this work was to evaluate the effect of weather conditions and different concentrations of N and K applied by fertigation in foliar contents of reducing sugars, total soluble sugars, starch, sucrose, amino acids, and proteins. The field experiment was carried out at Bebedouro Experimental Field and the biochemical evaluations at the Laboratory of Seed and Plant Physiology, both located at Embrapa Semi-Árido, Petrolina-PE. The doses of 200 g N and 100 g K2O; 400 g N and 200 g K2O; 600 g N and 300 g K2O; and 800 g N and 400 g K2O per plant were applied in an experiment field. The experimental design was totally randomized blocks, with four treatments and five blocks. The weather conditions influenced the plant photosynthesis, which affects the plants metabolism. Guava presented specific responses to N and K fertigation for each parameter evaluated. The weather conditions during the evaluation period influenced guava responses to N and K fertigation.
Palavras-Chave: | Carbohydrate; Primary metabolism.
Thesagro: | Psidium Guajava.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (24227-1) - ADC - AP - -- -  -  -  - DIS