Yield of Triticale (Triticosecale Wittmack) in Relation to Phosphorus Concentration in Various Plant Parts


INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY, vol.19, no.6, pp.1313-1318, 2017 (SCI-Expanded) identifier identifier


This research was conducted to examine the relationship between grain yield and phosphorus (P) concentration at different growth stages of winter triticale. Five triticale varieties (Karma, Melez, Mikham, Presto and Tatlicak) plus four rates of P (0, 30, 60 and 120 kg ha(-1) P2O5) were used under field conditions. The results showed that 60 kg P ha(-1) and the Melez cultivar produced the highest yields of straw and grain in both years. The highest P concentration was found in vegetative plant parts at the tillering (TL) stage and in grain after harvest. Phosphorus concentration of all plant parts increased as P rates increased and, finally, the application of 120 kg ha(-1) P2O5 had the highest P concentration. Presto and Mikham were the superior cultivars for forage based on P concentration of cultivars for both years. The Pearson correlation, regression, and path coefficient indicated that P concentration in the flag leaf (FL) was the most effective on grain yield. Path coefficient analysis indicated that the maximum direct positive effect on P concentration in grain was contributed by P concentration in tillers and straw. (C) 2017 Friends Science Publishers