For the new beeks. The problem here is that the plants will catch up, with regard to the season. They may not be as good a crop, but they will catch up a bit (and perhaps a lot), as and when the weather improves. The bees, on the other hand, are tied into the brood cycle which is inflexible. The risk is that, if, by the time the flowers are on the rape the new bees will not yet be 'foragers'. This may lead to reports that the rape was 'no good'.
It may not have been good, or the colony was using so much food for expansion, with too few foragers collecting it, that the hoped-for surplus was never achieved.
End result, one unhappy beekeeper feeding his/her really strong foraging force because the rape flowering period has been missed (and no replacement flow) and muttering that the rape was no good and these huge colonies are starving!
And, on top of that, the colonies then start to swarm. So, in my view, no time to be lost with colony expansion now, or we will be missing the main flow with too few foragers available. Better to be feeding a little to accelerate the expansion now(?) than be feeding afterwards because of the mono-crop problems.
That is my take on the situation. When I had a poor OSR crop I was not analysing it like that. But looking back, my bees were probably just not strong enough to be ready to take maximum advantage of the flow and were brooding, not foraging. The commercial beekeepers have to be ready!
This may mean that not everyone needs to be spring feeding like it's 'going out of fashion'. It may depend on the first expected nectar flow. Spring feeding can be a costly error. On the other hand, if expansion of colonies numbers is important, it may be a means to an end. Ymmv but things to considered are type of hive, insulation (we know that warm hives - poly hives - expand earlier), space and available resources for the expansion. Very easy to get it wrong.
Regards, RAB
It may not have been good, or the colony was using so much food for expansion, with too few foragers collecting it, that the hoped-for surplus was never achieved.
End result, one unhappy beekeeper feeding his/her really strong foraging force because the rape flowering period has been missed (and no replacement flow) and muttering that the rape was no good and these huge colonies are starving!
And, on top of that, the colonies then start to swarm. So, in my view, no time to be lost with colony expansion now, or we will be missing the main flow with too few foragers available. Better to be feeding a little to accelerate the expansion now(?) than be feeding afterwards because of the mono-crop problems.
That is my take on the situation. When I had a poor OSR crop I was not analysing it like that. But looking back, my bees were probably just not strong enough to be ready to take maximum advantage of the flow and were brooding, not foraging. The commercial beekeepers have to be ready!
This may mean that not everyone needs to be spring feeding like it's 'going out of fashion'. It may depend on the first expected nectar flow. Spring feeding can be a costly error. On the other hand, if expansion of colonies numbers is important, it may be a means to an end. Ymmv but things to considered are type of hive, insulation (we know that warm hives - poly hives - expand earlier), space and available resources for the expansion. Very easy to get it wrong.
Regards, RAB