Is the Nitrogen Use Efficiency (NUE) affected by the source of N-Fertilizer in corn?

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Sebastian Cambareri

Hi Angger, no I don't. I am just looking at the effect of this two sources on the nitrous oxide emissions, but in parallel I am trying to figure out what is the relationship with plant or crop parameters.

Angger Cahyo

I think not only the source of fertiliser, but also placement, dosage and timing of application. Reduce rate but with higher might be can increase fertiliser use efficiency. Fertiliser with sulphur coated layer might be give positive effect on NUE

thanks, actually, it will be a challenge because to figure out if what is coming out from the soil (N2O) is in turn affected by corn NUE (which in turn would be affected by N source)....several experiments or assumptions need to be done. I am also running the DNDC model.

Oyeyemi Dada

Yes. NUe is a function of source of N applied. Application of Fertilizer from material high in OC and OM encourage slow release of N while those from materials with low OC and OM releases N faster leading to waste of nutrient. Note that plant takes their nutrient as required (Liebig law of minimum). It will suffice to imagine that sources of N determines efficiency.

I am interested in the out come of the study please kindly mail a copy of published article to me.

Best regards.

ofosu-budu kwabena Godfred

Ofosu-Budu University of Ghana.

Yes, the NUe is dependent on several factors including the N source ( type of inorganic N fertilizer, combined inorganic and organic N fertilizer, organic N -quality of organic source fertilizer alone), formulation (slow release or granular ), rate of application (150 vrs 210 kgN/ha, type of crop (maize or cabbage) and soil type (sandy loam or clay-loamy) and the inherent organic matter content of the soil (low or high initial organic matter). Wishing you all the best