Effect of N top-dressing on grain yield of wheat varieties GK Szeged and GK Tiszataj [Triticum aestivum, varieties, seeds, nitrogen fertilizers]

agricultural chemicals agronomic characters anatomia anatomie anatomy cereales cereals crops cultivos cultivos de grano developmental stages economic plants engrais etapas de desarrollo etapas de desarrollo de la planta fertilizantes nitrogenados fertilizers glumiflorae grain crops graine gramineae monocotyledons nitrogen fertilizers plant anatomy plant developmental stages plantas plante plante de culture plants productividad productivity produit agrochimique profitability rendement rendimiento rentabilidad seeds semilla storage organs taxa taxon taxonomia taxonomie taxonomy trigo triticum triticum aestivum variedades varieties wheats yields