Quote Originally Posted by cur dog View Post
Wouldn't the best numbers be taken from a bush that shuts its vacuum off, during periods of freezing weather. When the vacuum never stops, it seems you would get good results on regular spouts. Is there data available showing a bush using CV's with new and older drops, and an on, off vacuum routine, like many producers use?
We did that for several years. The criticism from some folks was that if we kept the vacuum on all the time then the CV spout would not be effective and a regular spout replaced annually would yield the same results. That is definitely NOT the case. The CV spout still outperforms regular spouts under those conditions.