I work for an organization that helps smallholder farmers farm more effectively and sustainably through digital advisory (precisionag.org). Things we try to do

I work for an organization that helps smallholder farmers farm more effectively and sustainably through digital advisory (precisionag.org). Things we try to do are change pesticide behavior (recommend safer pesticides, get people to use only when necessary and in safe amounts), change fertilizer behavior (help them allocate money effectively for replenishing the right nutrients), decrease soil depletion and erosion (adjust tilling practices, increase crop rotation, that sort of thing). The hope is of course that this results in better yields with less damage, but the Jevons paradox has already been mentioned and it's hard to say what the effect will be in the long run. Personally I've just decreased material and meat consumption very significantly, and I try to be careful with flying (but need to do so occasionally for my work). I'm not too hopeful, the main economic systems are fully based on constantly increasing production (which mostly has a physical basis) and effective action would require significant international collaboration (the world does not seem to be getting more united). We will see - maybe once things really start going wrong and we get into crisis mode effective action suddenly becomes possible.