Foliar penetration routes for fertilizing the Orchid Cymbidium sp. (Orchidaceae)
DOI:
https://doi.org/10.29312/remexca.v0i5.1298Keywords:
Cymbidium sp., Orchid, pseudobulbsAbstract
The objectives of this study were to characterize the leaf anatomy and identify the routes of penetration of a foliar fertilizer 10-10-10 (NPK) on the Orchid (Cymbidium sp.), a species with high profitable potential for its high prices as a pot and cutting f lower. Considering the plant ́s morphological characteristics, to precise the nutrient absorption sites concede to optimize the technique and the inputs to be applied. Foliar applications and histological sections were conducted in the laboratory of Plant Histopathology of the Postgraduate College inAgricultural Sciences, Campus Montecillo, during themonthsApriltoAugust,2012.Thethicknessofthecuticle along the leaf was not even; in the middle portion was thicker (29.90 μm) than in the apical (26.91 μm) and basal portions (25.75 μm). The number of stomata throughout the leaf was uniform. In the middle region of the leaf, the epidermal tissue thickness (63 045 μm), the diameter of the subepidermal fiberbundles(184.55μm)showedthehighestvalues,while the larger diameter of the vascular bundle (1 031 μm) and the thicker mesophyll (3 777.91 μm) occurred in the basal portion of the leaves. The route of penetration of the foliar fertilizer was via cuticular and stomatal from 30 min after making the application and 120 min later it was visually observed in the pseudobulbs, suggesting that the fertilizer f lows into this area preventing loss. These results indicate that foliar feeding is a viable alternative that can be implemented in this ornamental production.
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