>Fukuoka also used wild carrots and daikon to bring up nutrients from lower down (source: My friend studied with him).
Not according to him he didn't. Read his books, he was very clear about everything he did. He grew vegetables to eat, in a completely different area, it had nothing to do with the grain field.
>Also white clover to fix nitrogen
Nitrogen is a non-issue precisely because you can pull it out of the air for free. You said you want a variety of plants to pull nutrients from the ground. Clover pulling nitrogen from the air is not support for that idea.
>Rice is a summer crop and in most places in Japan you can have a winter crop as well, which you use for nutrient migration.
But he didn't do that, he used it for a crop. He did rice and wheat, like I said. Both were crops, he sold the harvests. He did it for decades without any decline in yields. The idea that you need a "diverse polyculture" of plants as the current fad calls it is completely unsupported by evidence. They just need a healthy ecosystem to grow in, not necessarily different plants.
>Fukuoka's techniques work very well around where I like (my friend's fields are fantastic), but apparently don't work very well in more temperate climes
The techniques and ideas work fine, but you can't blindly copy his setup as it was. You don't have the season for two crops, so you don't do rice and wheat. You just do wheat. Marc Bonfils has grown winter wheat every year in the same field for over a decade with no inputs, no rotation, and yields increased each year as the soil was restored. If you are in a cold enough climate it might even make sense to compost your straw in the spring in order to warm your soil up earlier, but I am not sure about that yet, I'll be testing it this spring.
Not according to him he didn't. Read his books, he was very clear about everything he did. He grew vegetables to eat, in a completely different area, it had nothing to do with the grain field.
>Also white clover to fix nitrogen
Nitrogen is a non-issue precisely because you can pull it out of the air for free. You said you want a variety of plants to pull nutrients from the ground. Clover pulling nitrogen from the air is not support for that idea.
>Rice is a summer crop and in most places in Japan you can have a winter crop as well, which you use for nutrient migration.
But he didn't do that, he used it for a crop. He did rice and wheat, like I said. Both were crops, he sold the harvests. He did it for decades without any decline in yields. The idea that you need a "diverse polyculture" of plants as the current fad calls it is completely unsupported by evidence. They just need a healthy ecosystem to grow in, not necessarily different plants.
>Fukuoka's techniques work very well around where I like (my friend's fields are fantastic), but apparently don't work very well in more temperate climes
The techniques and ideas work fine, but you can't blindly copy his setup as it was. You don't have the season for two crops, so you don't do rice and wheat. You just do wheat. Marc Bonfils has grown winter wheat every year in the same field for over a decade with no inputs, no rotation, and yields increased each year as the soil was restored. If you are in a cold enough climate it might even make sense to compost your straw in the spring in order to warm your soil up earlier, but I am not sure about that yet, I'll be testing it this spring.