Calcareous soil is a dominant kind of soil in our country that causes a lot of problems for plant production. So, I decide to work on correction of iron deficiency of ornamental plants in the physiology field as my thesis. Hence, I am searching for ideas in this field.
I was wondering if you could provide me with some advice. I appreciate your time and consideration in advance
Hi Zeinab
There are a few things that can be done.
1. soil acidification using sulphur to increase Fe availability
2. using foliar application (bypassing the soil)
3. trying to improve availability of soil applied Fe using chelating agents eg EDTA.
There has been a lot of work done on this subject especially in citrus cultivation
see also previous discussion on "What is the link between calcium carbonate content in soils and chlorosis in plant? "
Regards
Andrew
Please check the following links and pdf attachments for the answer to your query.
http://www.springer.com/us/book/9780792310952
http://www.tandfonline.com/doi/abs/10.1080/01904168609363501?
http://www.ipipotash.org/presentn/inmfscy.htmljournalCode=lpla20
http://edis.ifas.ufl.edu/tr004
https://www.researchgate.net/publication/41120392_Influence_of_Iron_Potassium_Magnesium_and_Nitrogen_Deficiencies_on_the_Growth_and_Development_of_Sorghum_Sorghum_bicolor_L_and_Sunflower_Helianthus_annuus_L_Seedings
http://www.manz.at/list.html?isbn=978-94-010-5455-3
Best of Luck
Article Influence of Iron, Potassium, Magnesium, and Nitrogen Defici...
When looking at Iron deficiency in ornamentals, the pattern is first symptoms on growth tips apical because of relative immobile nature of the nutrient. The seed can have significant iron in the plants so indicator plants should be small seeded. I have seen good symptom development using petunia seed. The pH of the soil and carbonate content are good indicator of insolubility of the soil supply. Iron is generally not insufficient in the nutrient deficiency but unavailable. Organic materials are generally good chelators and Fe sequestrene EDTA could be effective but the use of a fulvic acid solution would also be able to mobilize iron. The symptoms of iron deficiency should be confirmed by tissue analysis.
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