تاثير كاربرد كودهاي فسفره و روي بر عملكرد كمي و كيفي ارقام گندم در سيستان

Effect of phosphorous and zinc application on yield quantity and quality of wheat cultivars in Sistan

The study of phosphorous (P) and zinc (Zn) application on quantity and quality of yield production in three wheat cultivars: Chamran, Hirmand and Crossfalat were conducted at Agricultural Insitiute Center of Zabol University in 1999. The experiment was set up as factorial split plot randomized complete block design with three replicates. Three levels of P (0, 75 and 125 kg/ha super Phosphat triple) and Zn (0, 25 and 50 kg/ha Zinc sulphat) were used as fertilizer treatment. The result showed that interaction between P, Zn and cultivars at 1% level had significant effect on grain yield, biological yield and number of spike. Wheat cultivars; Chamran and Hirmand produced 4.7 and 3.5 t/ha grain at P125kg and Zn50kg, respectively. But Crossfalat has showed high grain yield (4.7t/ha) at P125kg and Zn25kg treatment.Chamran had, the highest biological yield, but Crossfalat was significantly higher in number of spikeiet per spike than other cultivars. In this experiment, high level of P (125 kg/ha) increased many plant traits such as grain yield, number of grian per spike, biological yield and number of spike per squer meter. Application of 50 kg/ha Zn sulphat increased grain yield and biological yield. But application of P and Zn reduced significantly 1000 seed weight. The accumulation of P and Zn in grain was effectively under control of wheat cultivars. The concentration of P and Zn in grain was effected by fertilizers; Crossfalat at treatment P125kg and Zn50kg accumulated 2.7 gr/kg P in grain and Hirmand showed high concentration of Zn in grain (42 mg/kg) at P75kg and Zn50kg treatment. Also, Crossfalat showed high percentage of protein (% 14.8) in grain than other cultivars at P and Zn interaction. Applicaion of 75 and 125 kg/ha of P increased protein and P concentration in grain, respectively. In addition all levels of Zinc fertilizer raise the content of protein and concentration of Zn in grain. However, the antagonistic effect was shown between P and Zn.