Landscapers/farmers/gardeners, why do I have white in my soil please read below ?

I have white all over in my much amended soil, which I amended years ago. I noticed in my new lawn clippings this year when I poured then into a pile they had the same white stuff so I figure this is some kind of imbalance like nitrogen etc ? I am not a scientist, but one guy said seeing that white stuff in my soil is bad for my plants, like serious. I know I can have my soil tested and all, but not much money here and I thought I'd ask the A&A experts as they usually know. thanks so much for real answers or caring :)