TY - JOUR
T1 - Correction of iron chlorosis in peanut (arachis hypogea shulamit) by ammonium sulfate and nitrification inhibitor
AU - Kafkafi, U.
AU - Neumann, Ruth Ganmore
PY - 1985/4/1
Y1 - 1985/4/1
N2 - Peanut (Arachis hypogea cv. Shulamit) grown on very high calcium carbonate (CaCO3) content soils is showing iron (Fe) chlorosis symptoms. Supplying the plant with ammonium sulphate ((NH4)2SO4) in the presence of nitrapyrin (N-Serv) for preventing nitrification reduced Fe chlorosis. Nitrate (NO3) developed in the soil with time, even with nitrapyrin present. When ammonium (NH4) was even less than 20% of the total mineral N in the soil, no Fe-stress could be observed, suggesting that the NH4 uptake by the plant and the consequence of hydrogen (H+) efflux occurs from the root to the rhizosphere, resulting in a decrease of redox potential near the root, and solubilizing enough Fe near the root to overcome the chlorosis.
AB - Peanut (Arachis hypogea cv. Shulamit) grown on very high calcium carbonate (CaCO3) content soils is showing iron (Fe) chlorosis symptoms. Supplying the plant with ammonium sulphate ((NH4)2SO4) in the presence of nitrapyrin (N-Serv) for preventing nitrification reduced Fe chlorosis. Nitrate (NO3) developed in the soil with time, even with nitrapyrin present. When ammonium (NH4) was even less than 20% of the total mineral N in the soil, no Fe-stress could be observed, suggesting that the NH4 uptake by the plant and the consequence of hydrogen (H+) efflux occurs from the root to the rhizosphere, resulting in a decrease of redox potential near the root, and solubilizing enough Fe near the root to overcome the chlorosis.
KW - ionic balance
KW - NH4 uptake
KW - Nitrapyrin
KW - redox potential and lime
UR - http://www.scopus.com/inward/record.url?scp=9644282522&partnerID=8YFLogxK
U2 - 10.1080/01904168509363345
DO - 10.1080/01904168509363345
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AN - SCOPUS:9644282522
SN - 0190-4167
VL - 8
SP - 303
EP - 309
JO - Journal of Plant Nutrition
JF - Journal of Plant Nutrition
IS - 4
ER -