Seeking the correct dosage
One of the aims of the UPV/EHU research was to better understand the physiological response of the wheat crop to nitrogen. By means of a field study in the Basque province of Araba, carried out with a wide-ranging variety of flour wheat known as Soissons -, Dr Fuertes studied the physiological processes involved in the efficient use of nitrogen by the plant. According to her conclusions, applying an insufficient dosage of fertiliser will result in scant yields in terms of volume of production, while excessive dosage will cause environmental problems without achieving appreciable improvement in the quality of the grain. For Dr Fuertes, drawing up the procedures or protocols for the application of nitrogenated fertilisers should take into account the source of the nitrogen, the quantity to be applied and the distribution of the dosage, i.e. in how many stages should this amount be applied.
Less fertiliser, but better dosage
The PhD thesis of Ms Fuertes revealed that the optimum dosage enabling the maximum yield for wheat crop, in the climatic conditions extant in Araba, is about 155 kg of nitrogen per hectare. She also pointed out that dosages of 100 kg or less per hectare produce flours that are insufficient for bre
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