Re: A pollen question.
There is absolutely no question that pollen cannot be directly consumed by larvae. It must be converted to 'bee bread' a process involving the addition of enzymes by nurse bees and a type of fermentation involving a fungus in the cells.
As to how many traps you need...a good trap (such as a Sundance) can easily collect a pound in a week, and in some seasons in some locations, more than a pound a day! How long can it be kept frozen with significant deterioration for the intended purpose of feeding larvae...dunno. I watch for such reports with some care and AFAIK no such research has been done.
Regardless of what is said by others, if you are going to use fresh pollen make sure it is VERY fresh. Pollen is full of protein, all kinds of vitamins, and moisture...a perfect medium for growing all kinds of bacteria. If you can't add pollen frames from existing hives, together with their bee-provided enzymes and, etc. get the fresh pollen to your hives as soon as possible!
Lloyd Spear, Owner of Ross Rounds, Inc. Manufacturers of round section comb equipment and Sundance Pollen Traps.