TY - JOUR
T1 - Calcareous soil interactions of the iron(III) chelates of DPH and Azotochelin and its application on amending iron chlorosis in soybean (Glycine max)
AU - Ferreira, Carlos M. H.
AU - Sousa, Cátia A.
AU - Sanchis-Pérez, Inés
AU - López-Rayo, Sandra
AU - Barros, Maria Teresa
AU - Soares, Helena M. V. M.
AU - Lucena, Juan J.
N1 - This work is financed by the FEDER Funds through the Operational Competitiveness Factors Program - COMPETE and by National Funds through FCT - Foundation for Science and Technology within the scope of the project PTDC-AGR-TEC/0458/2014 - POCI-01-0145-FEDER-016681" and by the Spanish MINECO Project AGL2013-44474-R from Ministerio Economia y Competitividad. Carlos Ferreira would like to thank the support from his grant with reference SFRH/BD/95490/2013 from FCT. Global chelatesmarket information has been kindly provided by Laboratorios JAER.
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PY - 2019/1/10
Y1 - 2019/1/10
N2 -
In order to find new greener solutions for iron (Fe) induced chlorosis, two new chelating agents, N,N-dihydroxy-N,N′-diisopropylhexanediamide (DPH) and Azotochelin (AZO), were assessed for its effectiveness in mending induced chlorosis in soybean (Glycine max). DPH-Fe and AZO-Fe complexes were firstly tested for their soil interactions and capability to maintain Fe in a bioavailable form. Secondly,
57
Fe-chelates of DPH and AZO were applied to the soil in a pot experiment with chlorotic soybean plants. Their growth, SPAD chlorophyll index, and the Fe concentration in plant tissues and the remaining soil were evaluated. An isotope deconvolution analysis by using the concentration of the Fe isotopes was used to distinguish the Fe coming from soil and from the
57
Fe labelled fertilizer treatments. AZO and DPH have shown different interactions with soil and its components, with AZO showing less interaction than DPH. The application of AZO and DPH resulted in SPAD increase and Fe content. However, it was found that the Fe in plants had not come from the fertilizer application, but instead from natural sources. This is likely due to dissolution phenomena aided by the chelates added. Overall, AZO and DPH have shown good results in amending Fe induced chlorosis in calcareous soils and for this reason should be regarded as good green-candidates for Fe plant nutrition in calcareous soils.
AB -
In order to find new greener solutions for iron (Fe) induced chlorosis, two new chelating agents, N,N-dihydroxy-N,N′-diisopropylhexanediamide (DPH) and Azotochelin (AZO), were assessed for its effectiveness in mending induced chlorosis in soybean (Glycine max). DPH-Fe and AZO-Fe complexes were firstly tested for their soil interactions and capability to maintain Fe in a bioavailable form. Secondly,
57
Fe-chelates of DPH and AZO were applied to the soil in a pot experiment with chlorotic soybean plants. Their growth, SPAD chlorophyll index, and the Fe concentration in plant tissues and the remaining soil were evaluated. An isotope deconvolution analysis by using the concentration of the Fe isotopes was used to distinguish the Fe coming from soil and from the
57
Fe labelled fertilizer treatments. AZO and DPH have shown different interactions with soil and its components, with AZO showing less interaction than DPH. The application of AZO and DPH resulted in SPAD increase and Fe content. However, it was found that the Fe in plants had not come from the fertilizer application, but instead from natural sources. This is likely due to dissolution phenomena aided by the chelates added. Overall, AZO and DPH have shown good results in amending Fe induced chlorosis in calcareous soils and for this reason should be regarded as good green-candidates for Fe plant nutrition in calcareous soils.
KW - Chlorosis
KW - Green agriculture
KW - Green practices
KW - Plant Nutrition
UR - http://www.scopus.com/inward/record.url?scp=85051272864&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2018.08.069
DO - 10.1016/j.scitotenv.2018.08.069
M3 - Article
C2 - 30180362
AN - SCOPUS:85051272864
SN - 0048-9697
VL - 647
SP - 1586
EP - 1593
JO - Science of the Total Environment
JF - Science of the Total Environment
ER -