Evaluation of Organic Substrate On Growing of Plants of Oleander (Nerium oleander L.)

Oleander (Nerium oleander L.) is a woody and everlasting native shrub of the Mediterranean zone that is cultivated in the whole world as ornamental plant. It produces very showy inflorescences in the shape of corymbs terminals and it thinks that it is about 400 you will cultivate with a wide variety of colors. This plant is used widely in tropical and subtropical regions where it is cultivated like ornamental. The plants produced in substratum, present substantial differences with regard to the plants cultivated in soil. During the last years, there have developed more competitive and productive varieties that traditional, new technology that allows a great substitution of the traditional culture in soil, for the hydroponics and substratum. Three different organic substrates were evaluated: land of leaf (LL), vermicomposta (V) and sloth (S) mixed with inert substrate (IS): volcanic stone (20%), cocos fibers (20%) and sand (20%). Five treatments were evaluated by different organic substrate: T1= 60% IS + 40% LL, T2= 60% IS + 20%  LL + 20% V, T3= 60% IS + 40% V, T4= 60% IS + 20% V + 20% S, T5= 60% IS + 40% S. The vermicomposta 20% + land of leaf 20% incorporated into the substrate, stimulated a major growth in number of leaves, shoots and height in plants of oleander. The addition of sloth did not have significant effect in any of the variables.