The search for higher productivity and better plant quality associated with a plant adapted to environmental characteristics with, in general, excess heat is an important factor for the hydroponicist. Thus, techniques that favor obtaining seedlings that are resistant to microclimate variations and that guarantee a reduction in cycle with better quality are fundamental for adding value and greater stability in production.
As a result, some observations are necessary for the adoption of the change technique adopted by the most technically hydroponic producers. First, the mudão is a plant that will remain in the first stages of its formation for a longer time. The question is, why will she remain in this situation? This question must be associated with another one.
How can this quality change be achieved with this type of driving?
The reason for the current adoption of the seedling is to add to the seedling a characteristic of greater resistance / tolerance to transplantation, due to microclimate characteristics. A well-formed seedling, it is worth mentioning, is one that has greater rooting and leafing, as these characteristics will guarantee a better acclimatization of this change when subjected to the different phases of hydroponics.
For example: in a hydroponics located in places with higher temperatures, such as in the Midwest and North regions, whose maximum temperatures can easily exceed 35 o C, the transplant of phases can be a critical point in production, when they do not have a good formation of roots and leaves.
With the adoption of seedling production, the negative effect of temperature and other related indirect factors, such as reduced oxygenation of the nutrient solution, can be minimized. So, basically producing lettuce, arugula and tomatoes, for example, in the form of change, translates into the production of plants with better structural and physiological formation, with greater resistance to phase changes.
Well, but how to do this? When we understand the meaning of the phase change, this question starts to be answered: we conducted the plant in one, two or three phases to prepare the seedling for final planting. This preparation aims to strengthen hydroponic plants. And this is achieved with a conduction aiming at greater availability of solar radiation for better formation of leaves and aerial part associated with adequate nutrition. We can consider that the genetics of the plant helps this whole process (plants resistant to stalking / budding).
As a result, when conducting a plant in very open spaces, for example, when the producer in the conventional system, when transplanting the seedling from the tray directly to the final bed, puts the plant in a condition of excess light radiation and, consequently, loses in production, productivity and plant quality. On the other hand, and focusing more on the reality of the hydroponic producer, when we let a plant “pass” in the early stages, we can induce them to an environment with a radiation deficiency, favoring its etiolation, which is the search for “light” in an environment that is missing. This search leaves the seedling weak and with less resistance to transplantation to the other phases.
Thus, in order to achieve a change in excellence, the conduction of plants in trays with greater spacing and / or in intermediate stages that do not favor the competition between plants (interspecific) for “light” is one of the great secrets. This fact is associated with better nutritional management, since the plant is larger and demands more nutrients in the intermediate phase (it is important to note). This change will require the addition of a slightly higher nutrient solution EC, such as an EC of 1.3 for lettuce and 1.7 for arugula.
Finally, the use of biopromotors in the production of seedlings with hormonal action associated with the use of amino acids is one of the great potentiators in the production of these plants with superior commercial characteristics.