nafex@lists.ibiblio.org
Subject: North American Fruit Explorers mailing list at ibiblio
List archive
[NAFEX] Tree Health and Caution about Soil Assumptions
- From: BRosholdt <rosholdt@erols.com>
- To: nafex@lists.ibiblio.org
- Subject: [NAFEX] Tree Health and Caution about Soil Assumptions
- Date: Thu, 01 Dec 2005 19:03:20 -0500
>From what I read (below), the whole situation sounds very mysterious,
and I have been reading about very peculiar eco-situations that it took
some detective work to really find what was happening. I am not an
expert, but know, as most do about the use of organic matter and its
ameliorating impact on pH. I'm sure it has been said before, but don't
go messing around with minerals/fertilizers/composts/soils unless you
have some excellent advice when you start. Naturally, soils are a
living thing, and as such, have some eccentricities, just like most
living things. I found to my unpleasant surprise that our state extension office recommendations would have had me completely overdoing the lime thing (by about 3 Tons/acre!) because they are not used to recommending to people not involved in total chemical agriculture - that is - where you kill the soil, then buy the agribusiness' fertilizers and brews to grow plants in the remaining stuff. I ended up having to search for soil analysts who were a bit more saavy (and expensive), but actually helped me figure out how to reclaim a bulldozed area for growing plants and gradually improve the soil, specifically to encourage the life that goes on it, especially the fungi that support trees and the microbes that support garden veggies. Before we started with them, not even weeds would grow there. The point to this note about the life of the soil is that it makes a very big difference to the survival and health of plants growing on the soil whether or not there is life and available nutrients. Nutrients are not necessarily available at a particular pH, we all know. But lots of the basic soil/mineral rules change when compost, humic acids and earthworms are added to the equation. Here is a starting point for getting more info on this critical topic. http://soils.tfrec.wsu.edu/. Here also is a wonderful source for soil foodweb info: http://www.soilfoodweb.com/site_map.html Barb z6c/7a VA
Jerry said: "Yes, I believe Rosseyanka is less susceptible to KSD, especially seeing it is so winter hardy. David heavily fertilized his was and I suspect went into the winter too tender, was damaged, ...shepherd hooked, but not killed" I grafted Rosseyanka on native persimmon, it didn't wait till winter but went straight into the shepherd's crook shape. I chopped the tree to the ground and burned it. I kinda suspect now that manganese toxicity as someone mentioned once might be behind it, as the tree was on very acid clay. Could the native trees think nothing of high Mn levels, while it kills the kakis? I don't have kakis to compare, as I don't like them very much. The tree I grafted back in east TN did fine, but the soil wasn't nearly as acidic there. The weird thing is that where we have limed, (ran the garden up to about 6.4 though I'm sure it's dropping) the corn shows Mn deficiency each and every year. The only way I have found to deal with it is to throw some sulfur around. High pH, high organic matter, and high rainfall are a recipe for low Mn uptake. All I can control is the pH. This year we didn't have to worry about the high rainfall, (got 1" per mo in Sept and Oct, hot months too, with intense sunlight beating down daily) and the corn was still yellow striped till it got some sulfur. Donna |
- [NAFEX] Tree Health and Caution about Soil Assumptions, BRosholdt, 12/01/2005
Archive powered by MHonArc 2.6.24.