Abstract
Two field experiments were carried out at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate, North Nile Delta region during the two growing seasons (2008/2009 and 2009/2010) to find out the response of some wheat cultivars to different irrigation levels. Four wheat cultivars were subjected to 3 irrigation levels based on: soil moisture depletion (SMD) in the effective root zone, Ibrahim’s equation (ETP = 0.1642 + 0.8 EP) and watering till 5.0 cm above the soil surface. The wheat cultivars were: Sakha 93, Giza 168, Gemmeiza 7 and Gemmeiza 9. The most important results could be summarized as follows: The highest mean values of grain yield were recorded from Giza 168 wheat cultivar and the lowest mean values were obtained from Gemmeiza 9. Concerning irrigation treatments, the mean values of wheat grain yield can be descended in order as follows; irrigation till 5.0 cm > Ibrahim’s equation > soil moisture depletion (SMD). For straw yield, the highest mean values were recorded from Sakha 93 and Gemmeiza 7 with values of 6444.31 and 6486.03 kg/fed., respectively. Regarding irrigation treatments the highest mean values were recorded with Ibrahim’s equation and the mean values were 6175.27 and 6161.43 kg/fed. in the first and second growing seasons, respectively. The mean values for biological yield, the highest mean values were recorded under Giza 168 wheat cultivar in the two growing seasons and with irrigation till 5.0 cm above soil surface. The mean values of 1000 grain weight can be descended in order as follows: Giza 168 > Sakha 93 > Gemmeiza 7 > Gemmeiza 9 for irrigation treatments, the highest mean values were recorded with irrigation till 5.0 cm above soil surface. Moreover, the highest mean values of harvest index were recorded under Gemmeiza 9 wheat cultivar and under irrigation till 5.0 cm above soil surface. For water relations, the mean values of water utilization efficiency (W.Ut.E) and water use efficiency (W.U.E.) were obtained from Giza 168 wheat cultivar and irrigation according to soil moisture depletion (SMD). The values of actual waterconsumptive use for all studied cultivars were rather similar but under Gemmeiza 9 the mean values were slightly higher. While, the highest found mean values were under irrigation till 5.0 cm above soil surface. Values of water applied for the studied wheat cultivars can be descended in order as followsGiza 168 > Gemmeiza 9 > Gemmeiza 7 > Sakha 93. While, for irrigation treatments the mean values can be descended in order irrigation till 5.0 cm > SMD > Ibrahim’s equation.
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Claims 15
Claim · model-written summary
Giza 168 had the highest grain yield; Gemmeiza 9 the lowest.
- Taxon
- wheat
Triticum aestivume0 - Material
- Giza 168e0
- Outcome
- grain yielde0
- Direction
- higheste0
- Comparator
- Gemmeiza 9e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The highest mean values of grain yield were recorded from Giza 168 wheat cultivar and the lowest mean values were obtained from Gemmeiza 9.”
Claim · model-written summary
Grain yield ranked irrigation to 5.0 cm above Ibrahim’s equation above SMD.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- irrigation till 5.0 cme0
- Outcome
- grain yielde0
- Direction
- descendede0
- Comparator
- soil moisture depletion (SMD)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the mean values of wheat grain yield can be descended in order as follows; irrigation till 5.0 cm > Ibrahim’s equation > soil moisture depletion (SMD).”
Claim · model-written summary
Sakha 93 produced straw yield of 6444.31 kg/fed.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“For straw yield, the highest mean values were recorded from Sakha 93 and Gemmeiza 7 with values of 6444.31 and 6486.03 kg/fed., respectively.”
t0“WHEAT”
Claim · model-written summary
Gemmeiza 7 produced straw yield of 6486.03 kg/fed.
- Taxon
- WHEAT
Triticum aestivumt0 - Material
- Gemmeiza 7e0
- Outcome
- straw yielde0
- Direction
- higheste0
- Value
- 6486.03 kg/fed.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“For straw yield, the highest mean values were recorded from Sakha 93 and Gemmeiza 7 with values of 6444.31 and 6486.03 kg/fed., respectively.”
t0“WHEAT”
Claim · model-written summary
Ibrahim’s equation gave the highest straw yield, 6175.27 kg/fed. in the first season.
- Taxon
- WHEAT
Triticum aestivumt0 - Treatment
- Ibrahim’s equatione0
- Outcome
- highest mean valuese0
- Direction
- higheste0
- Value
- 6175.27e0
- Qualifier
- firste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Regarding irrigation treatments the highest mean values were recorded with Ibrahim’s equation and the mean values were 6175.27 and 6161.43 kg/fed. in the first and second growing seasons, respectively.”
t0“WHEAT”
Claim · model-written summary
Ibrahim’s equation gave 6161.43 kg/fed. straw yield in the second season.
- Taxon
- WHEAT
Triticum aestivumt0 - Treatment
- Ibrahim’s equatione0
- Outcome
- highest mean valuese0
- Direction
- higheste0
- Value
- 6161.43 kg/fed.e0
- Qualifier
- second growing seasonse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Regarding irrigation treatments the highest mean values were recorded with Ibrahim’s equation and the mean values were 6175.27 and 6161.43 kg/fed. in the first and second growing seasons, respectively.”
t0“WHEAT”
Claim · model-written summary
Giza 168 and irrigation to 5.0 cm gave the highest biological yield.
- Taxon
- wheat
Triticum aestivume0 - Material
- Giza 168e0
- Treatment
- irrigation till 5.0 cm above soil surfacee0
- Outcome
- biological yielde0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The mean values for biological yield, the highest mean values were recorded under Giza 168 wheat cultivar in the two growing seasons and with irrigation till 5.0 cm above soil surface.”
Claim · model-written summary
Giza 168 ranked highest for 1000 grain weight.
- Taxon
- WHEAT
Triticum aestivumt0 - Material
- Giza 168e0
- Outcome
- 1000 grain weighte0
- Direction
- descendede0
- Comparator
- Gemmeiza 9e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The mean values of 1000 grain weight can be descended in order as follows: Giza 168 > Sakha 93 > Gemmeiza 7 > Gemmeiza 9 for irrigation treatments, the highest mean values were recorded with irrigation till 5.0 cm above soil surface.”
t0“WHEAT”
Claim · model-written summary
Irrigation to 5.0 cm gave the highest 1000 grain weight.
- Taxon
- WHEAT
Triticum aestivumt0 - Treatment
- irrigation till 5.0 cm above soil surfacee0
- Outcome
- 1000 grain weighte1
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the highest mean values were recorded with irrigation till 5.0 cm above soil surface.”
e1“The mean values of 1000 grain weight can be descended in order as follows: Giza 168 > Sakha 93 > Gemmeiza 7 > Gemmeiza 9 for irrigation treatments, the highest mean values were recorded with irrigation till 5.0 cm above soil surface.”
t0“WHEAT”
Claim · model-written summary
Gemmeiza 9 and irrigation to 5.0 cm gave the highest harvest index.
- Taxon
- wheat
Triticum aestivume0 - Material
- Gemmeiza 9e0
- Treatment
- irrigation till 5.0 cm above soil surfacee0
- Outcome
- harvest indexe0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the highest mean values of harvest index were recorded under Gemmeiza 9 wheat cultivar and under irrigation till 5.0 cm above soil surface.”
Claim · model-written summary
Giza 168 under SMD had the reported water utilization and use efficiency results.
- Taxon
- wheat
Triticum aestivume0 - Material
- Giza 168e0
- Treatment
- soil moisture depletion (SMD)e0
- Outcome
- water utilization efficiency (W.Ut.E) and water use efficiency (W.U.E.)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the mean values of water utilization efficiency (W.Ut.E) and water use efficiency (W.U.E.) were obtained from Giza 168 wheat cultivar and irrigation according to soil moisture depletion (SMD).”
Claim · model-written summary
Gemmeiza 9 had slightly higher actual water consumption.
- Taxon
- WHEAT
Triticum aestivumt0 - Material
- Gemmeiza 9e0
- Outcome
- actual waterconsumptive usee0
- Direction
- slightly highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The values of actual waterconsumptive use for all studied cultivars were rather similar but under Gemmeiza 9 the mean values were slightly higher.”
t0“WHEAT”
Claim · model-written summary
Irrigation to 5.0 cm had the highest actual water consumption.
- Taxon
- WHEAT
Triticum aestivumt0 - Treatment
- irrigation till 5.0 cm above soil surfacee0
- Outcome
- actual waterconsumptive usee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The values of actual waterconsumptive use for all studied cultivars were rather similar but under Gemmeiza 9 the mean values were slightly higher. While, the highest found mean values were under irrigation till 5.0 cm above soil surface.”
t0“WHEAT”
Claim · model-written summary
Water applied ranked Giza 168 above Gemmeiza 9, Gemmeiza 7 and Sakha 93.
- Taxon
- wheat
Triticum aestivume0 - Material
- Giza 168e0
- Outcome
- water appliede0
- Direction
- descendede0
- Comparator
- Sakha 93e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Values of water applied for the studied wheat cultivars can be descended in order as followsGiza 168 > Gemmeiza 9 > Gemmeiza 7 > Sakha 93.”
Claim · model-written summary
Water applied ranked irrigation to 5.0 cm above SMD and Ibrahim’s equation.
- Taxon
- WHEAT
Triticum aestivumt0 - Treatment
- irrigation till 5.0 cme0
- Outcome
- water appliede1
- Direction
- descendede0
- Comparator
- Ibrahim’s equatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“for irrigation treatments the mean values can be descended in order irrigation till 5.0 cm > SMD > Ibrahim’s equation.”
e1“Values of water applied for the studied wheat cultivars”
t0“WHEAT”
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