from a thesis publicized at ISINIP (2008)
of TetsuRiki to the Plants
Tomoya Matsuyamaa), Hirohiko Sasamotoa),
Mikio Nakazonoc), Atsushi Morib)
and Satoshi Morib)
NPO-WINEPb), AICHI STEEL CORPORATIONa),
The Univ. of Tokyoc)
TetsuRiki-series developed by AICHI STEEL, are now under survey of the
optimum application conditions to the crop plants and vegetables in the
experimental field and farmyard either acidic soil in Japan or
calcareous soil in other countries. This time we used weeds and
broccolis in calcareous soil to test TetsuRiki-TypeX(powder &
Fe2+-chelate) by pot experiments. Type X as a
potent Fe-reagent for
water culture experiment was also investigated. The results were as
Basal application of Type X to 50 species of weeds seeds in calcareous
Soil Condition: Fossil seashell soil (pH8.0, CaCO3 70%)
620g + water
80g/pot Basal NPK Fertilizer: Longtotal 70 (CHISSO-ASAHI FERTILIZAR
CO.,LTD.),N:P:K=14:12:14. Fe Content of TetsuRiki Type X: 5.6%
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Though only 1 kind of weed grew at control, plural species of weeds had
grown using Type X and basal fertilizer, and biomass was increased.
Appropriate amount of Type X and NPK was necessary for the better
growth of weeds.
Basal application of Type X to various varieties of broccoli in
All 18 varieties used were 5-20% growth-promoted by the basal
application of Type X. Tolerance of Fe-deficiency is different between
varieties of broccoli.
The more potent repression of Fe deficiency-inducible genes in rice by
Type X than Fe-EDTA as an Fe reagent.
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In the solution including Type X, Fe-deficiency inducible genes were
not expressed under aerobic condition, but in the solution including
Fe-EDTA, those genes were expressed.
Type X is
durable to oxidation than Fe-EDTA at aerobic condition.
1. TetsuRiki Type X has an ability to supply Fe to the plants at
alkaline soil if used with appropriate amount or ratio of basal NPK
fertilizer, and to be more durable to oxidation than Fe-EDTA.
2. As the effective use of Type X, the more sophisticated method
of application should be developed and favorable species of crop plants
and vegetables should be selected.