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机译:Chlorophyll fluorescence and chlorophyll content in field-grown potato as affected by nitrogen supply, genotype, and plant age.
Dipartimento di Scienze Agronomiche, Agrochimiche e delle Produzioni Animali, Sez. Scienze Agronomiche, Universita degli Studi, Via Valdisavoia, 5, 95123 Catania, Italy.;
application rates; chlorophyll crop yield; dry matter; genotypes nitrogen fertilizers; physiological age; plant development; potatoes senescence;