Yes. Really noticeable. I move to Costa Rica 5 years ago and can’t grow anything in current location other than beans and fruit. Nothing else grows but moving soon. In Spain, I was self sufficient from around April through October and stored pumpkin, butternut and sweet potato over winter. Year 2, discovered a bunch of local growers doing no chemical growing and the difference was quite stark. Since around 2012, I noticed digestion changes and after hunting around found info on glysophate use at harvest. Previously, nothing was sprayed in last 3 months prior to harvest to minimise contamination but then it was discovered that shocking the plant in last few weeks results in larger harvests. It was only last year that I finally found some decent research papers suggesting mechanism of digestion issues and it’s pretty bloody obvious. Loading gut with herbicides affects the micro biome which hammers digestion. It’s not 100% verified but it seems pretty logical to me. 

Do you get snow in winter?