Efficacy of natural rain is positive since a lot of time, even if the market offers some alternative proposals, from time to time imposed by local low availability of water or indicated for some low requiring cultivations.
Nevertheless traditional irrigation, duly measured in time and quantity
* is always indicated, if possible
*respects natural root growth
*Is eco friendly because is obtained with long lasting solid sets: these do not require frequent reinvestments and do not produce rubbish with regularity.
*it is a logical choice because imitates the way nature has selected.
Doing better than nature is an involving challenge, but results are sometime under discussion.
In nature necessary water falls from above, it is probable that there is a still valid reason.