Paper · 2023 · Agricultural Water Management

Combined tillage: A management strategy to improve rainfed maize tolerance to extreme events in northwestern China

Jun Sun; Wenquan Niu; Yadan Du; et al.

18
claims
34
verbatim quotes
12
citations
1
research areas
✓
Open access · cc-by-nc-nd

Abstract

Climate warming has increased the frequency of droughts and excessive precipitation, adversely affecting crop growth, particularly under traditional intensive tillage. No-till improves crop tolerance to extreme events by reducing soil evaporation and improving soil structural stability to enhance soil water storage capacity and crop resistance, but long-term mono-no-till cakes the soil, reducing crop yield. Combining intensive tillage with no-till can compensate for some deficiencies arising from conventional tillage or single no-till. A three-year field experiment was conducted in wet (2020) and normal (2019 and 2021, where a drought event occurred in 2021) years to study the effect of tillage practices on summer maize productivity under different precipitation types. Treatments included conventional tillage (CT), no-tillage (NT), ridge cultivation with no-tillage (RNT), and conventional tillage of winter wheat combined with no-tillage of summer maize (NC). Compared with NT, NC and RNT significantly reduced soil bulk density and increased soil porosity in the 0–20 cm soil layer. Compared with CT, NC and RNT significantly improved aggregate stability, NC increased available soil water storage by 19.7% in the dry season (P < 0.05), and NC and RNT significantly reduced lodging rate in the rainy season. Over the three years, NC and RNT maintained higher maize yields (NC: 10.3 t ha–1 and RNT: 10.0 t ha–1) than CT (9.2 t ha–1), and NC had significantly higher yield stability than CT. Meanwhile, NC and RNT had higher precipitation use efficiency (PUE; NC: 21.2 kg ha–1 mm–1, RNT: 20.7 kg ha–1 mm–1) than NT (20.1 kg ha–1 mm–1) or CT (19.1 kg ha–1 mm–1). In terms of combined productivity, NC and RNT provide a more suitable soil environment for crop growth and maintain higher yield than NT and CT. NC rotation is recommended as the optimal tillage system for sustainable crop production under semi - arid agricultural conditions. RNT can be extended to areas prone to flooding with abundant rainfall. These results offer a benchmark for future studies on regional maize production under climate change.

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Claims 18

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

NC reduced soil bulk density relative to NT in the 0–20 cm soil layer.

Taxon
maizeZea mayst0
Treatment
NCe0
Outcome
soil bulk densitye0
Direction
reducede0
Qualifier
0–20 cm soil layere0
Comparator
NTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared with NT, NC and RNT significantly reduced soil bulk density and increased soil porosity in the 0–20 cm soil layer.”

✓ located verbatim in the source · abstract, characters 973–1096 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

NC increased soil porosity relative to NT in the 0–20 cm soil layer.

Taxon
maizeZea mayst0
Treatment
NCe0
Outcome
soil porositye0
Direction
increasede0
Qualifier
0–20 cm soil layere0
Comparator
NTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared with NT, NC and RNT significantly reduced soil bulk density and increased soil porosity in the 0–20 cm soil layer.”

✓ located verbatim in the source · abstract, characters 973–1096 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

RNT reduced soil bulk density relative to NT in the 0–20 cm soil layer.

Taxon
maizeZea mayst0
Treatment
RNTe0
Outcome
soil bulk densitye0
Direction
reducede0
Qualifier
0–20 cm soil layere0
Comparator
NTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared with NT, NC and RNT significantly reduced soil bulk density and increased soil porosity in the 0–20 cm soil layer.”

✓ located verbatim in the source · abstract, characters 973–1096 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

RNT increased soil porosity relative to NT in the 0–20 cm soil layer.

Taxon
maizeZea mayst0
Treatment
RNTe0
Outcome
soil porositye0
Direction
increasede0
Qualifier
0–20 cm soil layere0
Comparator
NTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared with NT, NC and RNT significantly reduced soil bulk density and increased soil porosity in the 0–20 cm soil layer.”

✓ located verbatim in the source · abstract, characters 973–1096 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

NC improved aggregate stability relative to CT.

Taxon
maizeZea mayst0
Treatment
NCe0
Outcome
aggregate stabilitye0
Direction
improvede0
Comparator
CTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared with CT, NC and RNT significantly improved aggregate stability, NC increased available soil water storage by 19.7% in the dry season (P < 0.05), and NC and RNT significantly reduced lodging rate in the rainy season.”

✓ located verbatim in the source · abstract, characters 1097–1321 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

RNT improved aggregate stability relative to CT.

Taxon
maizeZea mayst0
Treatment
RNTe0
Outcome
aggregate stabilitye0
Direction
improvede0
Comparator
CTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared with CT, NC and RNT significantly improved aggregate stability, NC increased available soil water storage by 19.7% in the dry season (P < 0.05), and NC and RNT significantly reduced lodging rate in the rainy season.”

✓ located verbatim in the source · abstract, characters 1097–1321 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

NC increased available soil water storage by 19.7% relative to CT in the dry season.

Taxon
maizeZea mayst0
Treatment
NCe0
Outcome
available soil water storagee0
Direction
increasede0
Value
19.7%e0
Qualifier
dry seasone0
Comparator
CTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared with CT, NC and RNT significantly improved aggregate stability, NC increased available soil water storage by 19.7% in the dry season (P < 0.05), and NC and RNT significantly reduced lodging rate in the rainy season.”

✓ located verbatim in the source · abstract, characters 1097–1321 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

NC reduced lodging rate relative to CT in the rainy season.

Taxon
maizeZea mayst0
Treatment
NCe0
Outcome
lodging ratee0
Direction
reducede0
Qualifier
rainy seasone0
Comparator
CTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared with CT, NC and RNT significantly improved aggregate stability, NC increased available soil water storage by 19.7% in the dry season (P < 0.05), and NC and RNT significantly reduced lodging rate in the rainy season.”

✓ located verbatim in the source · abstract, characters 1097–1321 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

RNT reduced lodging rate relative to CT in the rainy season.

Taxon
maizeZea mayst0
Treatment
RNTe0
Outcome
lodging ratee0
Direction
reducede0
Qualifier
rainy seasone0
Comparator
CTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Compared with CT, NC and RNT significantly improved aggregate stability, NC increased available soil water storage by 19.7% in the dry season (P < 0.05), and NC and RNT significantly reduced lodging rate in the rainy season.”

✓ located verbatim in the source · abstract, characters 1097–1321 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NC maintained higher maize yield than CT over three years (10.3 t ha–1 versus 9.2 t ha–1).

Taxon
maizeZea mayse0
Treatment
NCe0
Outcome
maize yieldse0
Direction
highere0
Value
10.3 t ha–1e0
Qualifier
9.2 t ha–1e0
Comparator
CTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Over the three years, NC and RNT maintained higher maize yields (NC: 10.3 t ha–1 and RNT: 10.0 t ha–1) than CT (9.2 t ha–1), and NC had significantly higher yield stability than CT.”

✓ located verbatim in the source · abstract, characters 1322–1503 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

RNT maintained higher maize yield than CT over three years (10.0 t ha–1 versus 9.2 t ha–1).

Taxon
maizeZea mayse0
Treatment
RNTe0
Outcome
maize yieldse0
Direction
highere0
Value
10.0 t ha–1e0
Qualifier
9.2 t ha–1e0
Comparator
CTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Over the three years, NC and RNT maintained higher maize yields (NC: 10.3 t ha–1 and RNT: 10.0 t ha–1) than CT (9.2 t ha–1), and NC had significantly higher yield stability than CT.”

✓ located verbatim in the source · abstract, characters 1322–1503 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

NC had higher yield stability than CT.

Taxon
maizeZea mayst0
Treatment
NCe0
Outcome
yield stabilitye0
Direction
highere0
Comparator
CTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Over the three years, NC and RNT maintained higher maize yields (NC: 10.3 t ha–1 and RNT: 10.0 t ha–1) than CT (9.2 t ha–1), and NC had significantly higher yield stability than CT.”

✓ located verbatim in the source · abstract, characters 1322–1503 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NC had higher precipitation use efficiency than NT or CT (21.2 kg ha–1 mm–1).

Taxon
maizeZea mayst0
Treatment
NCe0
Outcome
precipitation use efficiencye0
Direction
highere0
Value
21.2 kg ha–1 mm–1e0
Qualifier
CT (19.1 kg ha–1 mm–1)e0
Comparator
NTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Meanwhile, NC and RNT had higher precipitation use efficiency (PUE; NC: 21.2 kg ha–1 mm–1, RNT: 20.7 kg ha–1 mm–1) than NT (20.1 kg ha–1 mm–1) or CT (19.1 kg ha–1 mm–1).”

✓ located verbatim in the source · abstract, characters 1504–1673 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

RNT had higher precipitation use efficiency than NT or CT (20.7 kg ha–1 mm–1).

Taxon
maizeZea mayst0
Treatment
RNTe0
Outcome
precipitation use efficiencye0
Direction
highere0
Value
20.7 kg ha–1 mm–1e0
Qualifier
CT (19.1 kg ha–1 mm–1)e0
Comparator
NTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Meanwhile, NC and RNT had higher precipitation use efficiency (PUE; NC: 21.2 kg ha–1 mm–1, RNT: 20.7 kg ha–1 mm–1) than NT (20.1 kg ha–1 mm–1) or CT (19.1 kg ha–1 mm–1).”

✓ located verbatim in the source · abstract, characters 1504–1673 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

NC provided a more suitable soil environment for crop growth than NT and CT.

Taxon
maizeZea mayst0
Treatment
NCe0
Outcome
more suitable soil environment for crop growthe0
Direction
more suitablee0
Comparator
NT and CTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“In terms of combined productivity, NC and RNT provide a more suitable soil environment for crop growth and maintain higher yield than NT and CT.”

✓ located verbatim in the source · abstract, characters 1674–1818 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

RNT provided a more suitable soil environment for crop growth than NT and CT.

Taxon
maizeZea mayst0
Treatment
RNTe0
Outcome
more suitable soil environment for crop growthe0
Direction
more suitablee0
Comparator
NT and CTe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“In terms of combined productivity, NC and RNT provide a more suitable soil environment for crop growth and maintain higher yield than NT and CT.”

✓ located verbatim in the source · abstract, characters 1674–1818 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Authors recommend NC rotation for sustainable crop production under semi-arid conditions.

Taxon
maizeZea mayst0
Outcome
NC rotatione0
Qualifier
semi - arid agricultural conditionse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“NC rotation is recommended as the optimal tillage system for sustainable crop production under semi - arid agricultural conditions.”

✓ located verbatim in the source · abstract, characters 1819–1950 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Authors recommend extending RNT to flood-prone areas with abundant rainfall.

Taxon
maizeZea mayst0
Outcome
RNTe0
Qualifier
areas prone to flooding with abundant rainfalle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“RNT can be extended to areas prone to flooding with abundant rainfall.”

✓ located verbatim in the source · abstract, characters 1951–2021 · show in text ↑
t0

“rainfed maize”

✓ located verbatim in the source · title, characters 51–64 · show in text ↑

tillage · soil: physics · Zea mays (maize)Positive and negative results

152 papers: 124 positive, 28 negative or no effect

123 papers in the same direction as this paper · 20 in the opposite direction · 8 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

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tillage · growth · Zea mays (maize)Positive and negative results

283 papers: 196 positive, 87 negative or no effect

195 papers in the same direction as this paper · 81 in the opposite direction · 6 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

279 papers more in this group

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tillage · yield · Zea mays (maize)Positive and negative results

1,099 papers: 812 positive, 287 negative or no effect

811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

1,095 papers more in this group

See all 1,099 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.