Water regime and nitrogen form for different wheat cultivars under sprinkler irrigation system [electronic resource].

Includes reference.

Two field experiments were conducted in 200612007 and 200712008 at El-Bosaily Farm located at Beharia Governorate Egypt. This investigation aimed to study the effect of four irrigation regimes (0.60, 0.80, 1.00 and 1.20 of the potential evapotranspiration "ETo"estimated according to class A pan equation) applied by using sprinkler irrigation system, and three nitrogen sources (ammonium nitrate, mmnonimn sulphate and calcium nitrate), on the performance of four wheat (Trilicum aeslivum L.) cultivars (Giza 168, Sakha 93, Gemiza 9 and Gemiza 7). The experiments were designed in split-split plot arrangements with three replication. Irrigation levels were distributed in the main plot, nitrogen sources in sub plot and wheat cultivars allocated in sub sub plots. The objective of this study was to determine water requirements and suitable nitrogen forms for difterent wheat cultivars under sprinkler irrigation system. Results revealed that increasing irrigation level from 0.60 up to 1.00 ETo treatments increased fresh and dry weights; total leave area per plant; spike number per plant, biomass and grain yield for different wheat cultivars. Ammonium nitrate as a source of nitrogen gave the best vegetative growth parameters and yield compared with the two other sources of nitrogen. Giza 168 and Gemiza 9 were superior other varieties in the grain yie1d1m'- First order interaction indicated that the combination of either Giza 168 or Gemiza 9 and 1.00 ETo surpassed the other combinations; Gemiza 7 with 1.20 ETo being the lowest one.

Summary in Arabic.

1