john, the hygenic queens genetics get washed out when they mate and popullate the hives.the traits diminish over time. i take a lot of classes on beekeeping thru our asscoiation. usda has a lot of info available. the number one threat to our honeybees are varroa mites and the diseases they carry. to name a few, israeli acute virus, kasmir acute virus, chronic bee paralysis, and acute bee paralysis. european honey bees have never dealt with varroa, but africanized bees and asian bees have. those are the two areas that the varroa mites came from. each year, 70 percent of commercial bee hives get shipped to california for almond pollination along with other crops. it concentrates mites and diseases and when the hives are shipped back to their home states, the infected bees spread the diseases to local hives. when these hives collapse, the sick bees infect other hives in the area. the usda highly recommends bee keepers adopt an ipm management program. integrated pest management. when you purchase a new package of bees , or a nucleus colony, we quarrantine the bees at another location and treat them before brining them to the apiary. most all of the feral colonys in the us are gone, because of disease. the feral hives out there now are most all from swarms that escaped form a bee keeper.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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