I want to have a list of wheat growers who grow it regularly?
http://www.goleadsfarm.com has all sort of details for what you are asking for. To have details about people who grow wheat you should
select what is called select form if you select such you can see wheat growers under that title the list of wheat growers are given.
And about your last query, don’t put your self in commotion GoLeads is there to make you clear by providing a special feature
so called responders to mail there you can see list of people who responses and those who or not.