Diagnosis of the Nitrogen Status in Crops

On the critical N concentration in agricultural crops; N uptake and distribution in plant canopies; use of the nitrogen nutrition index for the analysis of agronomical data; the nitrogen requirement of major agricultural crops - grass, lands, wheat, barley, and durum wheat maize and sorghum; grain legumes; potatoes; mixed crops; management of N nutrition; nitrogen diagnosis and decision support; diagnosis using stem base extract - JUBIL method; leaf N content as an Indicator of the Crop N Nutrition.