Data/hora: 08/06/2024 14:29:08

Provedor de dados: | 94
País: | Brazil
Título: | Metabolic responses of guava trees irrigated withdifferent N and K levels in São Francisco Valley
Autores: | Dantas,Bárbara França; Pereira,Maiane Santos; Ribeiro,Luciana de Sá; Maia,Joselanne Luiza Trajano; Silva,Davi José; Duenhas,Luiza Helena; Lima,Maria Auxiliadora Coelho de; Bassoi,Luis Henrique.
Data: | 2007-08-01
Ano: | 2007
Palavras-chave: | Psidium guajava; Primary metabolism; Carbohydrate.
Resumo: | 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452007000200026
Editor: | Sociedade Brasileira de Fruticultura
Relação: | 10.1590/S0100-29452007000200026
Formato: | text/html
Fonte: | Revista Brasileira de Fruticultura  v.29 n.2 2007
Fonte: | info:eu-repo/semantics/openAccess