Effect of microalgae hydrolysate foliar application (Arthrospira platensis and Scenedesmus sp.) on Petunia x hybrida growth
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In horticultural practice, accelerated plant development, and particularly earlier flowering, has been reported with microalgae applications. Therefore, the objective of this work was to study the effects of foliar spraying with Scenedesmus sp. and Arthrospira platensis hydrolysates on Petunia x hybrida plant development and leaf nutrient status. Three treatments were tested: T1 (foliar application with water, the control), T2 (foliar application with Arthrospira ) and T3 (foliar application with Scenedesmus). Foliar spraying was applied 5 times (0, 14, 28, 35 and 42 days after transplanting). The concentration of both microalgae was 10 g L-1. At the end of the trial, biometric parameters and nutrient concentration in photosynthetic organs (the leaves) were measured. The results of this assay show that foliar application of Scenedesmus accelerated plant development in terms of higher rates of root growth, leaf and shoot development and earliness of flowering. Arthrospira enhanced the r...
Number of leaves
Number of shoots
Leaf nutrient concentration