Other defence systems involve the application of protective products that lower freezing temperature of crops, with presumed antifreeze action, although effectiveness is not yet confirmed and in any case variable.
Riguardo ai sistemi che prevedono la cessione diretta di calore all’ambiente esistono i cosiddetti bruciatori a combustione di GPL.
Other less used and tested systems that mix the air and counter stratification.
As regards systems that do not use irrigation, the most common is definitely the fan.
To work around the extremely high water requirements of the classic overhead irrigation system under-tree irrigation systems have been studied
Overhead irrigation is the classic application; highly effective but it requires significant water supply both at the farm (an estimated hourly rainfall of approx.
This technique is based on three application systems: convective cooling; hydro cooling; evaporative cooling.
The multifunctional net is a new model of rain and hail cover designed to protect the cherry tree against the D. Suzukii fruit fly.
Heavy rainfall in the period between the change of colour and ripening can cause fruit to split (also called “cracking”), certainly the most serious threat to cherry trees.
This practice developed by the French initially against the damage caused by codling moths (C. Pomonella) has also proven effective against other insects.