There is truth in much here. On both sides.... Post 18 hits the mark and is spot on... Ohiosam has a bit of truth also.. They do use a bit less in Pesticides, there is a bit less erosion and yields have gone up. As for non-point source pollution I don't but that.. That would be more towards Mid to large factorys unless the farmer is just dumping gallons of polluted material. When they us to till it absorbed what ever product that was sprayed now with no till, it runs off like water being poured over a piece of paper. Down side to tilling is soil run off.. The old large buffers would help that problem.... Just not solve it completely.
On the other hand. Not having buffer's along water way's like in the past has caused algae blooms and erosion is still fairly high along with Pesticides in the water way's.. Due to to the farmers mentality of "lets farm every inch." The same mentality that has doomed the quail and pheasant..
The GMO's are not bad it is the active ingredient in roundup that is being absorbed into the plants that causes the problem residual. Glyphosate..... Some say its harmless others say it is harmful.. What I have found is that it is the latter... Farmers will tell you it's not but they are harvesting record crops the Gov./Monsantos owns the world food trade so they are not going to tell you it bad for you.. Will we ever know the truth? yea in another 30 years but if it's bad then it will be to late or they will have another excuse for the increase in liver, kidney, or cancer.. How ever you look at it. We are F-ed and the water ways are f-ed.. The man with all the money usually prevails.. If you are ever going to invest your money.. Put it in food..... It is said that by 2050 the world will not be able to feed it's self.. I don't believe that, but I feel the quality of food will drastically go down.. Look at the GMO chickens and the acres of buildings of caged birds that never walk around. They get pumped full of antibiotics to keep the healthy and steroids to grow them bigger.. And we wonder why we have bigger and fatter kids.. G... As the saying goes we are what we eat.... The quality of food has gone down already... No, I'm not a "tree hugger" just calling it how I see it..
On the deer side.. If the soy beans are absorbing Glyphosate and they are feeding on it for a summer It's possible that it is effecting thing's.. Matbe it will be the deer biologist that find out that Glyphosate is bad.. Who knows.
That's my two cent's