Since biochar, my garden isn't yellow

Every spring, I used to have trees that looked strikingly yellow. I looked up some of those charts you see online. and they would show you what the soil probably was lacking in. It often was nitrogen.  Since I have biocharred nearly all of my garden, I no longer have trees or bushes that appear to be strikingly yellow.  It just struck me the other day.    I used to save up some of my pee and distribute on those plants, because pee is high in nitrogen.  Eventually, the plant would green up and I wouldn't have to worry about it.  

It just hasn't happened since I have been applying charged biochar.  

Theoretically, this is how it's supposed to work.  We have a ton of rain here in between November and April in the Pacific Northwet.  Normally, it washes out some of the nutrients.  When the nitrogen is washed out of the soil, the plants will look quite yellow instead of green.  The complex internal structure of the biochar catches the nutrients and microbes associated with them.  They form soil food webs.  The plant is now able to use some of these nutrients in a bioavailable form.  They aren't turning green with envy for those plants with plenty of nitrogen. I think they will grow better.
JohN S
PDX OR

It's great to hear that biochar gives your garden a boost. What do you put down under the tree canopies? Compost? Leaves? wood chips? Do you notice improvements in pest and disease resistance too?

I put the biochar in the driplines of the trees.   Permaculture style, lots of little plants all over, like nature.  Some change in disease on some trees, flavor, and productivity.
John S
PDX OR

The trees drop their leaves. I add wood chips every year.  

In most springs, I notice that many natural forests are kind of yellow. THey usually become darker green as the year goes on.  Before there were modern houses, natural fires burned longer, and the Native Americans where I live burned the forest floor every year.   There was likely a lot more biochar in the soil back then.  Nowadays, we have fire departments so modern cities and civilization won't be burned down.  The downside is less biochar in the soil, so less available nutrition.
John S
PDX OR