Choose An Account Type Register for the Website. Receive customized weather, quotes, and more on your own My123Ag page. You can also access our Field Manager to help you manage your fields. All we need is an ID, password, email address, and zip code, and you're all set! Open a Business Account. You must open a business account with us to make purchases from our website. Doing so helps us make sure we meet any legal requirements for selling chemicals to you, and helps us serve you better. You also enjoy all of the benefits received by users who register for the site.