Abstract
Amplifying drought stress and high precipitation variability impair dryland wheat production. These problems can potentially be minimized by using plastic mulch (PM) or straw mulch (SM). Therefore, wheat grain yield, soil water storage, soil temperature and water-use productivity (WUP) of PM and SM treatments were compared with no mulch (CK) treatment on dryland wheat over a period of eight seasons. Compared to the CK treatment, PM and SM treatments on average significantly increased grain yield by 12.6 and 10.5%, respectively. Compared to the CK treatment, SM treatment significantly decreased soil daily temperature by 0.57, 0.60 and 0.48°C for the whole seasons, growing periods and summer fallow periods, respectively. In contrast, compared to the CK treatment, PM treatment increased soil daily temperature by 0.44, 0.51 and 0.27°C for the whole seasons, growing periods and summer fallow periods, respectively. Lower soil temperature under SM allowed greater soil water storage than under PM. Pre-seeding soil water storage was 17% greater under the SM than under the PM treatment. Soil water storage post-harvest was similar for the PM and SM treatments, but evapotranspiration (ET) was 4.5% higher in the SM than in the PM treatment. Consequently, WUP was 6.6% greater under PM than under the SM treatment. Therefore, PM treatment increased dryland wheat yield and water-use productivity, while straw mulch increased soil water storage.
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Claims 13
Claim · model-written summary
Plastic mulch increased wheat grain yield by 12.6% versus no mulch.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- PMe0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 12.6e0
- Comparator
- CK treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the CK treatment, PM and SM treatments on average significantly increased grain yield by 12.6 and 10.5%, respectively”
t0“wheat”
Claim · model-written summary
Straw mulch increased wheat grain yield by 10.5% versus no mulch.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- SMe0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 10.5%e0
- Comparator
- CK treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the CK treatment, PM and SM treatments on average significantly increased grain yield by 12.6 and 10.5%, respectively”
t0“wheat”
Claim · model-written summary
Straw mulch reduced whole-season soil daily temperature by 0.57°C versus no mulch.
- Treatment
- SM treatmente0
- Outcome
- soil daily temperaturee0
- Direction
- decreasede0
- Value
- 0.57e0
- Qualifier
- whole seasonse0
- Comparator
- CK treatmente0
Not reportedTaxon
Verbatim
e0“Compared to the CK treatment, SM treatment significantly decreased soil daily temperature by 0.57, 0.60 and 0.48°C for the whole seasons, growing periods and summer fallow periods, respectively”
t0“wheat”
Claim · model-written summary
Straw mulch reduced growing-period soil daily temperature by 0.60°C versus no mulch.
- Treatment
- SM treatmente0
- Outcome
- soil daily temperaturee0
- Direction
- decreasede0
- Value
- 0.60e0
- Qualifier
- growing periodse0
- Comparator
- CK treatmente0
Not reportedTaxon
Verbatim
e0“Compared to the CK treatment, SM treatment significantly decreased soil daily temperature by 0.57, 0.60 and 0.48°C for the whole seasons, growing periods and summer fallow periods, respectively”
Claim · model-written summary
Straw mulch reduced summer-fallow soil daily temperature by 0.48°C versus no mulch.
- Treatment
- SM treatmente0
- Outcome
- soil daily temperaturee0
- Direction
- decreasede0
- Value
- 0.48°Ce0
- Qualifier
- summer fallow periodse0
- Comparator
- CK treatmente0
Not reportedTaxon
Verbatim
e0“Compared to the CK treatment, SM treatment significantly decreased soil daily temperature by 0.57, 0.60 and 0.48°C for the whole seasons, growing periods and summer fallow periods, respectively”
Claim · model-written summary
Plastic mulch increased whole-season soil daily temperature by 0.44°C versus no mulch.
- Treatment
- PM treatmente0
- Outcome
- soil daily temperaturee0
- Direction
- increasede0
- Value
- 0.44e0
- Qualifier
- whole seasonse0
- Comparator
- CK treatmente0
Not reportedTaxon
Verbatim
e0“compared to the CK treatment, PM treatment increased soil daily temperature by 0.44, 0.51 and 0.27°C for the whole seasons, growing periods and summer fallow periods, respectively”
Claim · model-written summary
Plastic mulch increased growing-period soil daily temperature by 0.51°C versus no mulch.
- Treatment
- PM treatmente0
- Outcome
- soil daily temperaturee0
- Direction
- increasede0
- Value
- 0.51e0
- Qualifier
- growing periodse0
- Comparator
- CK treatmente0
Not reportedTaxon
Verbatim
e0“compared to the CK treatment, PM treatment increased soil daily temperature by 0.44, 0.51 and 0.27°C for the whole seasons, growing periods and summer fallow periods, respectively”
Claim · model-written summary
Plastic mulch increased summer-fallow soil daily temperature by 0.27°C versus no mulch.
- Treatment
- PM treatmente0
- Outcome
- soil daily temperaturee0
- Direction
- increasede0
- Value
- 0.27°Ce0
- Qualifier
- summer fallow periodse0
- Comparator
- CK treatmente0
Not reportedTaxon
Verbatim
e0“compared to the CK treatment, PM treatment increased soil daily temperature by 0.44, 0.51 and 0.27°C for the whole seasons, growing periods and summer fallow periods, respectively”
Claim · model-written summary
Straw mulch had greater soil water storage than plastic mulch under lower soil temperature.
Not reportedTaxon
Verbatim
e0“Lower soil temperature under SM allowed greater soil water storage than under PM”
Claim · model-written summary
Pre-seeding soil water storage was 17% greater under straw mulch than plastic mulch.
- Treatment
- SMe0
- Outcome
- Pre-seeding soil water storagee0
- Direction
- greatere0
- Value
- 17%e0
- Comparator
- PM treatmente0
Not reportedTaxon
Verbatim
e0“Pre-seeding soil water storage was 17% greater under the SM than under the PM treatment”
Claim · model-written summary
Post-harvest soil water storage was similar under plastic and straw mulch.
Not reportedTaxon
Verbatim
e0“Soil water storage post-harvest was similar for the PM and SM treatments”
Claim · model-written summary
Evapotranspiration was 4.5% higher under straw mulch than plastic mulch.
Not reportedTaxon
Verbatim
e0“evapotranspiration (ET) was 4.5% higher in the SM than in the PM treatment”
Claim · model-written summary
Water-use productivity was 6.6% greater under plastic mulch than straw mulch.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- PMe0
- Outcome
- WUPe0
- Direction
- greatere0
- Value
- 6.6%e0
- Comparator
- SM treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WUP was 6.6% greater under PM than under the SM treatment”
e1“water-use productivity (WUP)”
t0“wheat”
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