Iron availability in tropical soils and iron uptake by plants
Revista Brasileira de Ciencia do Solo, ISSN: 1806-9657, Vol: 40, Issue: 0
2016
- 18Citations
- 44,439Usage
- 50Captures
Metric Options: CountsSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
Given the increase in crop yields and the expansion of agriculture in low fertility soils, deficiency of micronutrients, such as iron, in plants grown in tropical soils has been observed. The aim of this study was to evaluate Fe availability and Fe uptake by corn (Zea mays L.) plants in 13 different soils, at two depths. Iron was extracted by Mehlich-1, Mehlich-3, and CaCl (Fe-CC) and was fractionated in forms related to low (Fe) and high (Fed) crystallinity pedogenic oxyhydroxides, and organic matter (Fe) using ammonium oxalate, dithionite-citrate, and sodium pyrophosphate, respectively. In order to relate Fe availability to soil properties and plant growth, an experiment was carried out in a semi-hydroponic system in which part of the roots developed in a nutrient solution (without Fe) and part in the soil (the only source of Fe). Forty-five days after seeding, we quantified shoot dry matter and leaf Fe concentration and content. Fe levels were high, from 5 to 132 g kg, and Fe and Fe-CC levels were low, indicating the predominance of Fe as crystalline oxyhydroxides and a low content of Fe readily available to plants. The extraction solutions showed significant correlations with various soil properties, many common to both, indicating that they act similarly. The correlation between the Mehlich-1 and Mehlich-3 extraction solutions was highly significant. However, these two extraction methods were inefficient in predicting Fe availability to plants. There was a positive correlation between dry matter and Fe levels in plant shoots, even within the ranges considered adequate in the soil and in the plant. Dry matter production and leaf Fe concentration and content were positively correlated with Fe concentration, indicating that the Fe fraction related to soil organic matter most contributes to Fe availability to plants.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84992665526&origin=inward; http://dx.doi.org/10.1590/18069657rbcs20150174; http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100543&lng=en&tlng=en; http://www.scielo.br/pdf/rbcs/v40/0100-0683-rbcs-18069657rbcs20150174.pdf; http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-06832016000100543&lng=en&tlng=en; http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100543; http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-06832016000100543; https://dx.doi.org/10.1590/18069657rbcs20150174; https://www.scielo.br/j/rbcs/a/TW6vzWrfk4jwRsjvNQQSLCb/?lang=en
FapUNIFESP (SciELO)
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know