What is douple brood or one and half?
It means a site of excluder. Nothing more.
It means that you may exctract honey without brood cells.
Bees take care themselves without excluder.
Many use excluder so that they put it on on late summer that they can extract honey easily after main yield. Then they give sugar instead.
Many use exluder in UK even if they do not take honey off. WHY?
What is the most important in douple brood
- you need a good layer. It means strain of bees. If you do not select queens, propably you do not have a queen which can use 2 brood boxes.
When you have 2 brood, it is not sure, how much the hive need in winter. In my yard normally half of hives winter in one box. Very few year they all winter in 2 boxes. If late summer has bad weathers, almost all hives winter in one boxe, even if they have had 6 boxes in summer.
- Yes, if you give 2 brood to lay, it does not mean that you get any better hive.