TY - JOUR
T1 - Relationship between 1 M KCl-extractable aluminum and pyrophosphate-extractable aluminum in a horizons of non-allophanic andosols
AU - Takahashi, Tadashi
AU - Sato, Takashi
AU - Sato, Atsushi
AU - Nanzyo, Masami
AU - Sato, Takashi
AU - Sato, Atsushi
N1 - Funding Information:
Acknowledgments. This work was supported by a Grant-inAid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan (No. 1146(030) and by a Grant for EnVIronmental Research from the Sumitomo Foundation.
PY - 2003/10/1
Y1 - 2003/10/1
N2 - In the A horizons of non-allophanic Andosols, the concentrations of aluminum in the soil solution were considered to be largely controlled by Al-humus complexes (Takahashi et al. 1995: Soil Sci. Plant Nutr., 41, 119–131). Most of these soils displayed high concentrations of exchangeable Al which is toxic to plant roots due to its presumed rapid release kinetics to the soil solution. It is, therefore, likely that exchangeable Al is considerably influenced by Al-humus complexes. To confirm this assumption, we investigated the relationship between the amounts of 1 M KCl-extractable Al and pyrophosphate-extractable Al (Alp) using 25 A horizon samples of non-allophanic Andosols from Noshiro City, Akita Prefecture. A significant positive correlation was observed between the AI saturation (KCl-Al / effective CEC) and Alp concentration (r = 0.714, p < 0.001).
AB - In the A horizons of non-allophanic Andosols, the concentrations of aluminum in the soil solution were considered to be largely controlled by Al-humus complexes (Takahashi et al. 1995: Soil Sci. Plant Nutr., 41, 119–131). Most of these soils displayed high concentrations of exchangeable Al which is toxic to plant roots due to its presumed rapid release kinetics to the soil solution. It is, therefore, likely that exchangeable Al is considerably influenced by Al-humus complexes. To confirm this assumption, we investigated the relationship between the amounts of 1 M KCl-extractable Al and pyrophosphate-extractable Al (Alp) using 25 A horizon samples of non-allophanic Andosols from Noshiro City, Akita Prefecture. A significant positive correlation was observed between the AI saturation (KCl-Al / effective CEC) and Alp concentration (r = 0.714, p < 0.001).
KW - Aluminum-humus complexes
KW - Exchangeable aluminum
KW - Kcl-extractable aluminum
KW - Non-allophanic Andosols
KW - Pyrophosphate-extractable aluminum
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U2 - 10.1080/00380768.2003.10410331
DO - 10.1080/00380768.2003.10410331
M3 - Article
AN - SCOPUS:0142102399
SN - 0038-0768
VL - 49
SP - 729
EP - 733
JO - Soil Science and Plant Nutrition
JF - Soil Science and Plant Nutrition
IS - 5
ER -