Let be a Cohen-Macaulay local ring of dimension and let be an -primary ideal. Let be the associated graded ring of with respect to and let be the extended Rees ring of with respect to . Notice is a non-zerononzero divisor on and . So, we have Bockstein operators for . Since $, we have Bockstein cohomology modules for . In this paper, we show that certain natural conditions on implies vanishing of some Bockstein cohomology modules.