It will be the first of the year before I move my bees to my house so I'm trying to do what I can in getting prepared for them. Living here in the deep south I'm naturally concerned with SHB...actually I think I'm beginning to be obsessed with killing them and I don't even have a colony here yet!!
I know that there's "yes/no" thoughts about whether the nematodes do much good over the big picture, but if they'll keep *my* bee yard from being a breeding ground for SHB then that's good enough for me...I will have basically done all that I could do in that regards.
I have a few questions, though, that I would like to present:
Would it be better to do a soil drench now or maybe early this fall to allow the nematodes to establish themselves and possibly start increasing in number? Or, would it be better to wait until this spring to introduce them?
With the understanding that no pesticides will be used on the ground will the nematodes be permanently in the soil and increase in number or will they eventually dwindle away?
The amount of Bt that is purchased will probably be more than I would use for the area of the apiary. Would it help to use a more concentrated drench in the area or would it be better to use the prescribed concentration and extend the drench beyond the area of the apiary?
I'm primarily looking at using Heterorhabditis indica. It is listed as being used for SHB and also is stated as being heat tolerant. Another one that has been mentioned and appears to be more prolific is Steinernema riobrave.
Critical constructive thoughts anyone?