Plant diagnostic in durum wheat

Mladen Almaliev, Svetla Kostadinova, Galya Panayotova

Abstract: Seven varieties of durum wheat grown under nitrogen fertilization N0, N60, N120 and N180 were studied in content of total nitrogen, phosphorus and potassium in the tillering stage. Genotypic differences were stronger in plants without nitrogen fertilization with varying of N from 1.46% to 2.81%. New durum wheat varieties tended to contain higher levels of nitrogen and phosphorus in tillering, compared to the standard Progress. The high nitrogen rate N180 increased concentration of potassium and reduces that of phosphorus in plants. The content of nitrogen and potassium in durum wheat was determined 93.3% and 75.2% respectively of nitrogen fertilization and that of phosphorus in most (46.6%) of the interaction Variety × N. The concentration of nitrogen in tillering was in a strong positive correlation with N rate, grain and protein yields, grain N concentration, N taken up and biomass in tillering, and that one of potassium with nitrogen fertilization, grain yield protein, nitrogen uptake and the mass of plants in the tillering.

Keywords: durum wheat; NPK concentrations; plant diagnostics

Date published: 2017-07-06