Is that ahimsaa research foundation dot org? Looked for neem there and didn't find it. Maybe I have the wrong folks?
gregor_mendel
My apologies - it's The Ahimsa Alternative dba Neem Resource
Sorry about that......
Is that ahimsaa research foundation dot org? Looked for neem there and didn't find it. Maybe I have the wrong folks?
I am curious if microbes are involved in the breakdown of liming agents like CaCO3? Or is that straight up acid/base chemistry?
Even in a so called sterile soil can't you make Ca available with acid and water? (not saying you would want to do that...just saying can't you?)
Question: How does sand compare to clay.
Specifically:
-what are their primary uses?
-how do they compare with regards to moisture retention?
-how do they compare with regards to nutrient availability
-what are the favourite types of clay you use?
To elaborate, I needed an amendment to help retain moisture better, as the plants were running dry far too quickly, so I hastily added sand. But from what I am reading on cation exchange capacity it seems like bentonite, or some other clay, is a far superior ingredient that satisfies the same purposes as sand but also helps significantly add more plant available nutrients.
Sorry for the newb questions.
Okay I'll try answering this.
Sand is a good thing to add drainage to the mix and really has no CEC attributes but can bring some good minerals to the table. I use it in a soil mix for its drainage/porosity capacity.
Various clays are more of a soil compacter, not allowing a lot of drainage, especially if not combined with organic matter, loam or sand. Many a farmer complains of red clay soil!
Most clays are a power punch of minerals but besides having a moisture retaining quality they also 'mostly' carry a negative electrical charge. This is the oumph! in CEC (and organic matter). They grab onto and hold the positively charged nutrients which are released later on by our mining microbes when instructed to by 'bioelectrochemical' signals from the roots of the plant.
The trick is to use a clay powder with a heavy negative charge, lots of minerals and good moisture retention/expansion. Most sources of bentonite fulfill this....just be sure the heavy metals are not sky-rocket...for a human price.
I am trying not to go large. Stubborn, eh?
Damn stanley, 1300 posts. By my calculations the information in this thread is more than a grower could get in over ten years of skunk magazine, twenty five years of high times, and all of Jorge's books, and here it's all in one compost heap. Good job youngin......scrappy
You better be careful though... It will transcend into your lifestyle.
That's a damned fine first post~
Soil tests are inaccurate in living organic soil. The best they can do is give you an understanding of what is happening at the time of the test. Nutrients are sequestered in the bodies of billions of organisms. Whatever is on the diet of each particular organism determines what gets released as nutrients in the form of waste that the plant can use or other organisms break down even further...or not.
It can't hurt to do a soil test to give you an estimate of what is happening atm...but that doesn't mean in the next few days anything like,water content,temps,or available food could change the universe for micro organisms..encouraging faster action on the fish meal which is suddenly pooped out by billions of organisms and the change would definitely be a different result on a soil test.
MJP
That book is most helpful from an agriculture perspective, there are other books which provide more information from a horticulture perspective. Not that they're completely unrelated but there are significant differences in the materials you might choose in one vs. the other.
Here's a solid list of books at Acres USA Magazine that might be helpful. They offer a complimentary copy of their magazine which is the oldest and largest magazine for sustainable and organic food production.
Their archives are worth reviewing as well......
HTH
CC
Advanced Nutrients is now making an excellent flushing agent - I won't flush without it.
Jerry