Hi;
There are the antagonist or synergistic relation between macro and micro-nutrients absorption by plant. Do you think antagonism relation between nutrients materials depends on the nutrients concentrations? as an example, if Fe concentration is higher than 5 ppm(no toxicity concentration) it can lead to a decrease in Zn absorption. And lower than 5 ppm concentrations do not have any effect on Zn absorption?
Thanks
Nitrogen as major essential nutrient when applied as high analysis urea fertilizer contain 46 % nitrate nitrogen as in watersolubbe form cause oxodation of nitrate as soil residual acidity of soil pH below about 5.5 availability of aluminium,iron manganese increse in crop cultivated soil may cause residual toxicity upon essential nutrients like phosphorus, potassium,calcium , magnesium, boron, molybdenum in soil .Application of lime amended acid soil through calcium carbonate or calcum and magnesium carbonate may cause reduced availability of sulfur, iron, manganese,copper in soil.
Thank you very much to everyone who shared his valuable opinion.
Do you believe If the micronutrients have antagonistic relation, they will have antagonistic relation in all situations without considering their concentration?
Critical limits concept established by scientists in soil and plant for micronutrients may be applied in this process. As for example in case of iron critical limits for deficiency of iron in soil is 4.5 milligrams per kg of soil and above 300 milligrams per kg of soil may be toxic to other micronutrients like manganese and zinc and in plant iron about 50 milligrams per kg of plant may be deficient and above 2500 milligrams per kg of plant may be toxic to other micronutrients like manganese ,zinc etc.
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