Abstract
Management practices can alter soil physical properties and maize (Zea mays L.) yield. The study examined the influence of tillage systems, nitrogen (N) fertilizer and cattle dung (CD) applications on selected soil physical properties and maize yield from 2018 to 2019 in southwest Nigeria. The soil at the site had a sandy loam texture with an annual mean air temperature of 27 °C and annual mean precipitation of 1214 mm. Tillage practices were zero tillage (ZT), minimum tillage (MT) and conventional tillage (CT); N fertilizer at the rate of 120, 90 and 0 kg N ha-1 (control); and CD was applied at the rate of 10, 5 and 0 ton ha-1 (control). Soil bulk density, total porosity and saturated hydraulic conductivity were measured at the 0-15 cm depth after maize harvest. Bulk density was 7 % higher, but total porosity was 6 % lower for MT than CT at 5 tons ha-1 of CD in 2019. Saturated hydraulic conductivity was 17 % higher for 10 compared with 5 tons ha-1 of CD in 2018. Maize yield was 35-57 % higher for MT compared with CT or ZT at 0 and 120 kg N ha-1 in 2018 and 27-88 % higher for CT and MT compared with ZT at all N application rates in 2019. Soil bulk density was positive, but total porosity was negatively correlated in 2018. The MT with 120 kg N ha-1 or 5 tons ha-1 of CD application enhanced bulk density, lowered total porosity and increased maize yield in southwest Nigeria.
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Claims 8
Claim · model-written summary
Minimum tillage had 7% higher soil bulk density than conventional tillage with 5 tons ha-1 cattle dung in 2019.
- Treatment
- MTe0
- Outcome
- Bulk densitye0
- Direction
- highere0
- Value
- 7 %e0
- Qualifier
- 5 tons ha-1 of CD in 2019e0
- Comparator
- CTe0
Not reportedTaxon
Verbatim
e0“Bulk density was 7 % higher, but total porosity was 6 % lower for MT than CT at 5 tons ha-1 of CD in 2019.”
Claim · model-written summary
Minimum tillage had 6% lower total porosity than conventional tillage with 5 tons ha-1 cattle dung in 2019.
Not reportedTaxon
Verbatim
e0“Bulk density was 7 % higher, but total porosity was 6 % lower for MT than CT at 5 tons ha-1 of CD in 2019.”
Claim · model-written summary
Ten tons of cattle dung increased saturated hydraulic conductivity by 17% versus five tons in 2018.
- Treatment
- 10e0
- Outcome
- Saturated hydraulic conductivitye0
- Direction
- highere0
- Value
- 17 %e0
- Comparator
- 5 tons ha-1 of CDe0
Not reportedTaxon
Verbatim
e0“Saturated hydraulic conductivity was 17 % higher for 10 compared with 5 tons ha-1 of CD in 2018.”
Claim · model-written summary
Minimum tillage yielded 35-57% more maize than conventional or zero tillage at specified N rates in 2018.
- Treatment
- MTe0
- Outcome
- Maize yielde0
- Direction
- highere0
- Value
- 35-57 %e0
- Qualifier
- 0 and 120 kg N ha-1 in 2018e0
- Comparator
- CT or ZTe0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize yield was 35-57 % higher for MT compared with CT or ZT at 0 and 120 kg N ha-1 in 2018 and 27-88 % higher for CT and MT compared with ZT at all N application rates in 2019.”
Claim · model-written summary
Conventional and minimum tillage yielded 27-88% more maize than zero tillage in 2019.
- Treatment
- CT and MTe0
- Outcome
- Maize yielde0
- Direction
- highere0
- Value
- 27-88 %e0
- Qualifier
- all N application rates in 2019e0
- Comparator
- ZTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize yield was 35-57 % higher for MT compared with CT or ZT at 0 and 120 kg N ha-1 in 2018 and 27-88 % higher for CT and MT compared with ZT at all N application rates in 2019.”
Claim · model-written summary
Soil bulk density was positively correlated in 2018.
Not reportedTaxonSetting
Verbatim
e0“Soil bulk density was positive, but total porosity was negatively correlated in 2018.”
Claim · model-written summary
Total porosity was negatively correlated in 2018.
Not reportedTaxonSetting
Verbatim
e0“Soil bulk density was positive, but total porosity was negatively correlated in 2018.”
Claim · model-written summary
Minimum tillage with N or cattle dung raised bulk density and yield and reduced porosity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MT with 120 kg N ha-1 or 5 tons ha-1 of CD application enhanced bulk density, lowered total porosity and increased maize yield in southwest Nigeria.”
The same questions in other papers
tillage · yield · Zea mays (maize)Positive and negative results
811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative
- no effect
- negative
- 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.