There are two deadlines for the Dissertation Fieldwork grant -- November and May 1st. You cannot reapply for a grant until you have received notification on your application in process. The Foundation makes every attempt to ensure that applicants receive notification on the status of their application in time for them to reapply for the next deadline. We cannot always guarantee this as there are times when the review process can take longer than six months.
Please note that if you are reapplying for the Dissertation Fieldwork grant you must submit a resubmission statement which address the reviewer's comments from your previous proposal.