The turbiti ultrafine bubble generator is a first-class workhorse nano bubble generator. Turbiti has no moving parts so maintenance is minimal, it can be place in the most demanding environments. The nano bubble generator requires a low head pump, so its efficient in energy usage. The Turbiti concept gives you a worry free nano bubble solution generating billions of bubbles for many years.
Tipburn of lettuce is the drying and dying of leaf tissue along the edges of the leaf. The first symptoms of damage consist of small yellow spots or edges along the leaf edge. Usually they are not found on the oldest leaf, but more on the growing, younger leaves of the head. The damage generally occurs only after a head has formed. The moment when the leaves of the head loosen, is critical for the occurrence of the damage. The very tallest leaves are usually cool. As the deterioration continues, the spots expand and unite, while the tissue disappears. This causes irregularly shaped dead and thinned leaf edges. These often form a starting point for secondary parasitic infections (bacterial rot).
IR L. J. J. van der Kloes, Proefstation voor de Groenten- en Fruitteelt onder glas te Naaldwijk (translated from Dutch)ci 1