Abstract
Abstract A field experiment was carried out in southern Italy to investigate the effects of irrigation and salinity on a maize crop and soil properties. The experiment was laid out comparing different irrigation rates (I1, I2, I3—re‐establishing 50, 75 and 100% of the calculated maximum evapotranspiration) and water quality (FW, fresh water and SW, saline water). Grain yield was significantly greater by 60% in 2008 than in 2010. No significant difference was shown for grain yield between the irrigation treatments, whereas water productivity decreased significantly with increasing irrigation rates. Irrigation with saline water did not significantly reduce grain yield compared with fresh water, but it improved grain quality with higher protein content (9.1%) and lower grain moisture percentage (13.3%). Saline water determined a significant increase of saturated soil paste extract Na, ECe, SAR, some exchangeable cations and ESP compared with FW in both years. Furthermore, at the end of the experiment these parameters were lower than those at the end of the first maize crop. Lastly, in the saline treatment, at the end of the trial, the ECe and ESP values were below the critical threshold for soil salinization and/or sodification. Copyright © 2016 John Wiley & Sons, Ltd.
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Claims 9
Claim · model-written summary
Maize grain yield was 60% greater in 2008 than in 2010.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was significantly greater by 60% in 2008 than in 2010”
t0“Maize”
Claim · model-written summary
Maize grain yield did not differ significantly among irrigation treatments.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant difference was shown for grain yield between the irrigation treatments”
t0“Maize”
Claim · model-written summary
Water productivity decreased significantly as irrigation rates increased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water productivity decreased significantly with increasing irrigation rates”
t0“Maize”
Claim · model-written summary
Saline water did not significantly reduce maize grain yield relative to fresh water.
- Treatment
- saline watere0
- Outcome
- grain yielde0
- Direction
- did not significantly reducee0
- Comparator
- fresh watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation with saline water did not significantly reduce grain yield compared with fresh water”
t0“Maize”
Claim · model-written summary
Saline water irrigation improved maize grain protein content to 9.1%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it improved grain quality with higher protein content (9.1%) and lower grain moisture percentage (13.3%)”
e1“Irrigation with saline water did not significantly reduce grain yield compared with fresh water”
t0“Maize”
Claim · model-written summary
Saline water irrigation lowered maize grain moisture percentage to 13.3%.
- Treatment
- saline watere1
- Outcome
- grain moisture percentagee0
- Direction
- lowere0
- Value
- 13.3%e0
- Comparator
- fresh watere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it improved grain quality with higher protein content (9.1%) and lower grain moisture percentage (13.3%)”
e1“Irrigation with saline water did not significantly reduce grain yield compared with fresh water”
t0“Maize”
Claim · model-written summary
Saline water significantly increased soil extract Na, ECe, SAR, some exchangeable cations and ESP versus fresh water in both years.
- Treatment
- Saline watere0
- Outcome
- saturated soil paste extract Na, ECe, SAR, some exchangeable cations and ESPe0
- Direction
- increasee0
- Qualifier
- both yearse0
- Comparator
- FWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Saline water determined a significant increase of saturated soil paste extract Na, ECe, SAR, some exchangeable cations and ESP compared with FW in both years”
e1“FW, fresh water and SW, saline water”
t0“Maize”
Claim · model-written summary
Those soil parameters were lower at the end of the experiment than after the first maize crop.
- Outcome
- saturated soil paste extract Na, ECe, SAR, some exchangeable cations and ESPe1
- Direction
- lowere0
- Comparator
- end of the first maize crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the end of the experiment these parameters were lower than those at the end of the first maize crop”
e1“saturated soil paste extract Na, ECe, SAR, some exchangeable cations and ESP”
Claim · model-written summary
At trial end under saline treatment, ECe and ESP were below the critical soil salinization or sodification threshold.
- Outcome
- ECe and ESP valuese0
- Direction
- belowe0
- Qualifier
- in the saline treatment, at the end of the triale0
- Comparator
- critical threshold for soil salinization and/or sodificatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the saline treatment, at the end of the trial, the ECe and ESP values were below the critical threshold for soil salinization and/or sodification”
t0“Maize”
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