Abstract
A field trial was conducted at Giza Agricultural Research Station during the two successive seasons 2009/2010 and 2010/2011 to study the response of barley to different irrigation regimes induced due to irrigating according to 1.1 (wet irrigation regime), 0.9 (medium irrigation regime) and 0.7(dry irrigation regime) coefficients for the accumulative pan evaporation (APE) records in combination with nitrogen fertilization rates of 0, 15, 30 and 45 kg Nfed-1. Results of combined analysis could be summarized as follows:- 1. The assessed irrigation regimes had a significant effect on plant height, spike length, number of spikes m-2, number of grains spike-1, 1000 kernels weight, biological yield fed-1., harvest index, grain and straw yields. The highest values of such characters were obtained for wet irrigation regime (1.1 APE) followed by medium (0.9 APE) and dry (0.7APE) ones, respectively. Protein content of barley grains increased as plants were imposed to severe water stress (dry irrigation regime, 0.7 APE). 2. Seasonal water consumptive use (WCU) was increased under wet irrigation regime (1.1 APE coefficient). Whereas, water use efficiency (WUE) increased under medium irrigation regime (0.9 APE coefficient). 3. Appling 45 kg N fed-1 significantly increased plant height, spike length, number of spikes m-2, number of grains spike-1, 1000 kernels weight, biological yield, harvest index, grain and straw yields. Furthermore, protein content of grains, seasonal water consumptive use (WCU) and water use efficiency (WUE) tended to increase due to the highest N- rate. 4. The interaction effect between irrigation regimes and nitrogen fertilization rates was found to be significant for growth, yield and its components characters. The maximum values of plant height, spike length, number of spikes m-2, number of grains spike-1, 1000- kernel weight, biological yield, harvest index, grain and straw yields were obtained as barley irrigated at 1.1 APE coefficient under 45 kg N fed-1 rate. Higher water consumptive use (WCU) values resulted from interaction of wet irrigation regime (1.1APE) and 45 kg N fed-1 rate. Whereas, the highest values of water use efficiency (WUE) were recorded as barley plants were irrigated at medium irrigation regime (0.9 APE) under 45 kg N fed-1. The maximum values of protein content in barley grains were obtained due to irrigating at the dry irrigation regime (0.7 APE) in combination with 45 kg Nfed-1 rate.
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Claims 11
Claim · model-written summary
Wet irrigation increased barley growth and yield traits over medium and dry regimes.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- wet irrigation regime (1.1 APE)e0
- Outcome
- highest values of such characterse0
- Direction
- higheste0
- Comparator
- medium (0.9 APE) and dry (0.7APE)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The highest values of such characters were obtained for wet irrigation regime (1.1 APE) followed by medium (0.9 APE) and dry (0.7APE) ones, respectively”
t0“BARLEY”
Claim · model-written summary
Dry irrigation increased grain protein content.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- dry irrigation regime, 0.7 APEe0
- Outcome
- Protein content of barley grainse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein content of barley grains increased as plants were imposed to severe water stress (dry irrigation regime, 0.7 APE)”
Claim · model-written summary
Wet irrigation increased seasonal water consumptive use.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- wet irrigation regime (1.1 APE coefficient)e0
- Outcome
- Seasonal water consumptive use (WCU)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seasonal water consumptive use (WCU) was increased under wet irrigation regime (1.1 APE coefficient)”
t0“BARLEY”
Claim · model-written summary
Medium irrigation increased water use efficiency.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- medium irrigation regime (0.9 APE coefficient)e0
- Outcome
- water use efficiency (WUE)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water use efficiency (WUE) increased under medium irrigation regime (0.9 APE coefficient)”
t0“BARLEY”
Claim · model-written summary
The highest nitrogen rate increased barley growth and yield traits.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- 45 kg N fed-1e0
- Outcome
- plant height, spike length, number of spikes m-2e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Appling 45 kg N fed-1 significantly increased plant height, spike length, number of spikes m-2, number of grains spike-1, 1000 kernels weight, biological yield, harvest index, grain and straw yields”
t0“BARLEY”
Claim · model-written summary
The highest nitrogen rate tended to raise grain protein, water use, and water use efficiency.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- highest N- ratee0
- Outcome
- protein content of grains, seasonal water consumptive use (WCU) and water use efficiency (WUE)e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“protein content of grains, seasonal water consumptive use (WCU) and water use efficiency (WUE) tended to increase due to the highest N- rate”
t0“BARLEY”
Claim · model-written summary
Irrigation and nitrogen interacted significantly for growth and yield traits.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- irrigation regimes and nitrogen fertilization ratese0
- Outcome
- growth, yield and its components characterse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interaction effect between irrigation regimes and nitrogen fertilization rates was found to be significant for growth, yield and its components characters”
t0“BARLEY”
Claim · model-written summary
Wet irrigation combined with 45 kg nitrogen maximized growth and yield traits.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- 1.1 APE coefficient under 45 kg N fed-1 ratee0
- Outcome
- plant height, spike length, number of spikes m-2e0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum values of plant height, spike length, number of spikes m-2, number of grains spike-1, 1000- kernel weight, biological yield, harvest index, grain and straw yields were obtained as barley irrigated at 1.1 APE coefficient under 45 kg N fed-1 rate”
Claim · model-written summary
Wet irrigation with 45 kg nitrogen increased water consumption.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- wet irrigation regime (1.1APE) and 45 kg N fed-1 ratee0
- Outcome
- water consumptive use (WCU)e0
- Direction
- Highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher water consumptive use (WCU) values resulted from interaction of wet irrigation regime (1.1APE) and 45 kg N fed-1 rate”
t0“BARLEY”
Claim · model-written summary
Medium irrigation with 45 kg nitrogen gave highest water use efficiency.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- medium irrigation regime (0.9 APE) under 45 kg N fed-1e0
- Outcome
- water use efficiency (WUE)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest values of water use efficiency (WUE) were recorded as barley plants were irrigated at medium irrigation regime (0.9 APE) under 45 kg N fed-1”
Claim · model-written summary
Dry irrigation with 45 kg nitrogen maximized barley grain protein.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- dry irrigation regime (0.7 APE) in combination with 45 kg Nfed-1 ratee0
- Outcome
- protein content in barley grainse0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum values of protein content in barley grains were obtained due to irrigating at the dry irrigation regime (0.7 APE) in combination with 45 kg Nfed-1 rate”
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See all 19 papers →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.