from an article here.

I was aiming at a pleasant, natural way of farming . . . which results in making the work easier instead of harder. "How about not doing this? How about not doing that?"—that was my way of thinking.

By taking this approach, I ultimately reached the conclusion that there was no need to plow, no need to apply fertilizer, no need to make compost, no need to use insecticide! When you get right down to it, there are few agricultural practices that are really necessary.

The reason that man's "improved" techniques seem to be necessary is that the natural balance has been so badly upset beforehand by those same techniques that the land has become dependent on them.

Make your way carefully through these fields. Dragonflies and moths fly up in a flurry. Honeybees buzz from blossom to blossom. Part the leaves and you will see Insects, spiders, frogs, lizards, and many other small animals bustling about in the cool shade. Moles and earthworms burrow beneath the surface.

This is a balanced ricefield ecosystem. Insect and plant communities maintain a stable relationship here. It is not uncommon for a plant disease to sweep through this region and leave the crops in my fields unaffected.

And now look over at the neighbor's field for a moment. The weeds have all been wiped out by herbicides and cultivation. The soil animals and insects have been exterminated by poison. The earth has been burned clean of organic matter and micro-organisms by chemical fertilizers. In the summer you see farmers at work in the fields . . . wearing gas masks and long rubber gloves. These rice fields—which have been farmed continuously for over 1,500 years—have now been laid waste by the exploitive farming practices of a single generation.

--Masanobu Fukuoka