[MustrumRidcully]

Here you go about the absence of pesticides : http://www.fermedubec.com/publications.aspx

Basically, french state's scientific body reviewed this organic permaculture farm for 4 years. They do not use pesticides, do not use thermic engines, and are so productive that it allows farmers to earn the median french salary while doing 35h/week on average.

How? No tilling of the soils. Worms do it for you. No weeds, since the soil is always cultivated, leaving no room for them. No need for a lot of fertilisers : the organic soil is actually growing from the constant adjunction of carbon, and beans are fixing the nitrogen in the soil. No need for excessive watering : the soil retains humidity. Etc...

Science, guys.