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- From: "Kieran &/or Donna" <holycow@frontiernet.net>
- To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
- Subject: Re: [NAFEX] sandy soil and sugary fruit
- Date: Fri, 12 Jun 2009 10:10:22 -0500
Alan's comments are very interesting. Of
course it is always advantageous to grow plants in soils they prefer.
Commercial agriculture involves watermelons and sweet potatoes on sandy soils,
other crops on clay soils. For us, stuck with our plot of land we can't
change, the trick is how to use this info. Naturally if in a dry climate
we can control water. We can also control nutrients to some degree.
For storage, it's better to pick
late tomatoes in a dry spell even if they will be riper in a few days amid a
wet spell. I assume the same is true for tree fruits. And in
general, the more N the higher the water content of the plant and the
fruit. Organic theory holds that the heavy use of N fertilizers
is why conventionally grown crops require so much protection from pests and
disease. If you dig around a bit, esp regarding tomato flavor and
storage, there's trace minerals that have important effects. If I remember
correctly, copper sprays up the acid content. They also increase storage
life, or rather low copper decreases it. Don't quote me on this
though. One thing I do remember for sure is that apples that are grown a
little N deficient have brighter color and store better.
Which brings me around to fall
leaf color. This being such a big tourist deal in our area, we get little
bits on plant metabolism in the local paper some years. Dry sunny fall
weather brings out the color in the leaves, involving higher sugar content and
I'll bet, better flavor overall in everything ripening at that time. Can
we cheat and somehow produce some of the same effects in our fruiting
trees? I know the organic farmers use brix meters to check the brix
content of crop leaves. When there is a prolonged drought or rainy spell,
brix levels drop. When the brix drops below a specified point for any
given crop (there are reference lists) the farmer must act. In rainy
weather, funguses attack. In dry weather, insects move in. I assume
they use fungicides in the wet, but in the dry there is a foliar formula for
seaweed, calcium, and sugar to bring up the brix. It's not just organic
farmers that use brix meters, anyone wanting to do IPM should be using one
too. It allows a farmer to wait till the last possible minute before
spraying, in hopes the weather will change and fix the problem for
him. Donna
|
-
[NAFEX] sandy soil and sugary fruit,
Alan Haigh, 06/12/2009
- Re: [NAFEX] no summer for the North?, Kieran &/or Donna, 06/12/2009
- Re: [NAFEX] sandy soil and sugary fruit, Kieran &/or Donna, 06/12/2009
-
Re: [NAFEX] chemical vs organic,
Kieran &/or Donna, 06/12/2009
- Re: [NAFEX] chemical vs organic, Mark Angermayer, 06/12/2009
- Re: [NAFEX] chemical vs organic, Stephen Sadler, 06/12/2009
- Re: [NAFEX] chemical vs organic, Kevin Moore, 06/14/2009
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