Stone
Well-Known Member
Just read a study where 2 species of fern that evolved on alkaline soils and
were said to need alkaline media to grow found that they grew equally well
with Ph values of 5.5 and 7.5 as long as the Ca/Mg ratio was in the range of
2 to 10. In other words that the percentage of Ca was 20 to 100 times that of Mg.
In onother study, wheat plants were fed nitrate, nitrate/ammonium and ammonium forms of N. The nitrate fed plants had the greatest root growth,
The NH4/NH3 plants about 15% less and the ammonium plants about20% less.
More evidence Nitrate is preferable to ammonium?
were said to need alkaline media to grow found that they grew equally well
with Ph values of 5.5 and 7.5 as long as the Ca/Mg ratio was in the range of
2 to 10. In other words that the percentage of Ca was 20 to 100 times that of Mg.
In onother study, wheat plants were fed nitrate, nitrate/ammonium and ammonium forms of N. The nitrate fed plants had the greatest root growth,
The NH4/NH3 plants about 15% less and the ammonium plants about20% less.
More evidence Nitrate is preferable to ammonium?