Abstract
A field experiment was carried out at the Experimental Farm of Sakha Agricultural Research Station during the winter season of 2014/2015 and 2015/2016 to study the impact of foliar application with potassium on growth, yield, its components and the economic yield as well as on irrigation water productivity of barley Giza 126 cultivar under water deficit conditions. The experiment was laid out in spilt plot design with four replications. The main plots were designated to irrigation treatments i.e. I0 = full irrigation (control), I1 = two irrigations at 35 and 70 days after sowing (DAS), and I2 = one irrigation at 35 days after sowing (DAS), while the sub plots were devoted to four treatments of foliar application with potassium (K0 = without spray, K1 = 1% K2O, K2= 2 % K2O and K3= 3% K2O) in the form of potassium sulfate (48%). Results showed that, increasing water stress significantly retard photosynthetic pigments, flag leaf area, relative water content (RWC %), yield and its components and carbohydrate content. On the other hand, plants under water stress showed marked increase in grain protein content. Foliar spraying with potassium markedly increased most growth and yield parameters and quality of barley grains. The results showed that high irrigation water productivity (IWP) is attainable without significant yield penalty (utilizing a two irrigations at 35 and 70 days after sowing (DAS), or one irrigation after 35 DAS and foliar spraying with potassium (1% K2O, or 2 % K2O, or 3 % K2O) offering chance for improving land level water use and enhancing the crop economic return.
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Claims 6
Claim · model-written summary
Increasing water stress significantly reduced photosynthetic pigments, flag leaf area and relative water content in barley.
- Taxon
- Barley
.jpg?width=60)
Hordeum vulgaret0 - Material
- Giza 126e1
- Organ / stage
- flag leafe3
- Treatment
- increasing water stresse3
- Outcome
- photosynthetic pigments, flag leaf area, relative water contente3
- Direction
- retarde3
- Setting
- Experimental Farm of Sakha Agricultural Research Statione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Response of Barley Plants to Potassium Spraying under Water Deficit Conditions”
e1“barley Giza 126 cultivar under water deficit conditions”
e2“Experimental Farm of Sakha Agricultural Research Station during the winter season of 2014/2015 and 2015/2016”
e3“increasing water stress significantly retard photosynthetic pigments, flag leaf area, relative water content (RWC %), yield and its components and carbohydrate content”
Claim · model-written summary
Increasing water stress significantly reduced yield and its components and carbohydrate content in barley.
- Taxon
- BarleyHordeum vulgaret0
- Material
- Giza 126e1
- Treatment
- increasing water stresse3
- Outcome
- yield and its components and carbohydrate contente3
- Direction
- retarde3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Barley Plants to Potassium Spraying under Water Deficit Conditions”
e1“barley Giza 126 cultivar under water deficit conditions”
e3“increasing water stress significantly retard photosynthetic pigments, flag leaf area, relative water content (RWC %), yield and its components and carbohydrate content”
Claim · model-written summary
Water stress markedly increased grain protein content in barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- water stresse4
- Outcome
- grain protein contente4
- Direction
- increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Barley Plants to Potassium Spraying under Water Deficit Conditions”
e4“plants under water stress showed marked increase in grain protein content”
Claim · model-written summary
Foliar potassium spraying markedly increased most growth and yield parameters of barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- Foliar spraying with potassiume5
- Outcome
- growth and yield parameterse5
- Direction
- increasede5
- Qualifier
- moste5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Barley Plants to Potassium Spraying under Water Deficit Conditions”
e5“Foliar spraying with potassium markedly increased most growth and yield parameters and quality of barley grains”
Claim · model-written summary
Foliar potassium spraying markedly increased quality of barley grains.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- Foliar spraying with potassiume5
- Outcome
- quality of barley grainse5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Barley Plants to Potassium Spraying under Water Deficit Conditions”
e5“Foliar spraying with potassium markedly increased most growth and yield parameters and quality of barley grains”
Claim · model-written summary
High irrigation water productivity is attainable with one irrigation after 35 DAS and foliar potassium without significant yield penalty.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- one irrigation after 35 DAS and foliar spraying with potassiume6
- Outcome
- irrigation water productivity (IWP)e7
- Direction
- higherinferrede7
- Qualifier
- without significant yield penaltye7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Barley Plants to Potassium Spraying under Water Deficit Conditions”
e6“utilizing a two irrigations at 35 and 70 days after sowing (DAS), or one irrigation after 35 DAS and foliar spraying with potassium”
e7“high irrigation water productivity (IWP) is attainable without significant yield penalty”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.