deficiency in cauliflower. 155
deficiency symptoms 35
essential in N fix, for enzyme involved 72
needed for legume, chickpea
needed to fight virus 408
required by nitrogenase in fixing nitrogen 61
tightly attached to polysaccharide sugar chain 16
But who reads the Primer UPDATE???????????????????????????????
Bluestem Associates wrote:
> I should think if any group would understand that use patterns and
> results would be all over the map, it would be *this* one. That said,
> a few observations.
> Many (perhaps most) of the organic farms that I inspect do *not*
> capture enough nitrogen to maintain a productive system over the long
> term. In that respect Avery and some of the other naysayers have a
> valid *empirical* point. These farms, however, are almost always short
> of nitrogen owing to poor nitrogen management (insufficient N fixation,
> manure management problems, etc.).
> It is entirely possible for a well-managed organic farm to capture all
> the nitrogen needed for "high-yield" production. In fact, it is not at
> all uncommon for an organic system to become too *rich* in nitrogen one
> or two rotation cycles after the transition, at which point the grower
> shifts to mixed hay (rather than straight legumes) and things settle
> Virtually all farmers (organic and otherwise) neglect the valuable role
> played by molybdenum in improving the efficiency of nitrogen capture.
> With well-considered additions of molybdenum, it is quite possible to
> capture more solar energy (through increased yields) than can be
> released from an equal weight of uranium via nuclear power. A few grams
> per hectare is usually all that it takes, added with inoculant at
> seeding. This because the nitrogenase component of the rhizobial
> nitrogen fixation reaction is dependent on an Fe-Mo protein, with moly
> being the limiting factor.
> Editorial comment about Chilean nitrate --- if organic is to allow any
> soluble nitrogen at all, it should be in the form of ammonium sulfate,
> not as a nitrate. Every other nutrient sulfate is already permitted,
> and AS is much better for soil microbes than the nitrates. Also, any
> idea that an organic inspector can determine the difference between
> 10-20 kg/ha nitrate and 50-60 kg/ha or even more (split apps) is ...
> pure fantasy.
> I have to chuckle when the naysayers criticise organic production as
> "inefficient" when their Farm Bureau buddies routinely knife in 400
> units of anhydrous per acre every autumn and then have to come back
> over their corn with liquid 28 the following season just to make sure
> they have "enough."
> Conventional American agriculture is "efficient" (I suppose) in the
> same way as the American consumer economy. You can jump into a 2-ton
> SUV and drive it three blocks to pick up a 2-ounce packet of razor
> blades, and marvel at the "efficiency" of it all--- and look down one's
> nose at the scruffy unshaven neighbours -- but it is tragically
> laughable to conclude from that situation that walking and bicycles are
> Bart Hall
> Lawrence, Kansas
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