Response of zebda and langra mango trees to some biofertilization treatments [electronic resource].

Includes references.

The influence of biofertilization with phosphorene at 5,10, and 15 g/tree, pottassine at 250, 500 and 1000 ppm and active bread yeast at 0.4, 0.8 and 1.0% on leaf mineral content, yield as well as physical and chemical properties of Zebda and Langra mango fruits was investigated during 2003 and 2004 seasons. Obtained results showed that application of phosphorene at 5 to 15 g/tree, pottassine at 250 to 1000 ppm and active bread yeast at 0.4 to 1.0% was very effective in enhancing nutritional status of the trees, yield as well as physical and chemical characters of the fruits in Zebda and Langra mango trees. The promotion was associated with increasing the applied rates. Application of active bread yeast and pottassine was superior than phosphorene in improving all studied parameters, except POlo. No practical influence on the investigated parameters was observed when using higher rates of phosphorene (10 and 15g/tree,) pottassine (500 and 1000 ppm) and active bread yeast (0.8 and 1.0%) From the economic point of view, the best results with regard to nutritional status of the trees, yield and fruit quality were obtained when Zebda and Langra mango trees biofertilized three times with active bread yeast at 0.8% or three times with pottassine at 1000 ppm or phosphorene at 10.0g/tree once.

Summary in Arabic.

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