Abstract
Abstract Background and aims The utilization of phosphorus (P) in cattle slurry as a starter fertilizer in maize cropping is poor. To improve this and to obviate the use of additional mineral starter-P fertilization, we examined if slurry acidification, placement strategy and application time could increase maize yield and phosphorus uptake (PU) in the early growth stages. Methods In a climate-controlled pot experiment, untreated (pH 6.5) and acidified (pH 5.5 or pH 3.8) cattle slurry was injected in narrow or broad bands two or 30 days before sowing of maize on a coarse sandy and a sandy loam soil and compared with mineral P fertilizer. Results After broad band slurry injection, the P concentration in maize tissues at the five-leaf stage and the dry matter yield at the seven-leaf stage were equal to or higher than the mineral P fertilizer treatment. Treatments with strongly acidified slurry (pH 3.8) had 49% higher PU at the seven-leaf stage compared to untreated slurry, but only on the sandy soil, suggesting an indirect pH effect on PU. Application time had no effect. Conclusion Broad band slurry injection or strong acidification can improve early-stage growth of maize and potentially obviate the use of mineral P.
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Claims 4
Claim · model-written summary
Broad band slurry injection gave maize tissue P concentration at the five-leaf stage equal to or higher than mineral P fertilizer.
- Organ / stage
- five-leaf stagee1
- Treatment
- broad band slurry injectione1
- Outcome
- P concentration in maize tissuese1
- Direction
- equal to or highere1
- Comparator
- mineral P fertilizere1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“After broad band slurry injection, the P concentration in maize tissues at the five-leaf stage and the dry matter yield at the seven-leaf stage were equal to or higher than the mineral P fertilizer treatment”
Claim · model-written summary
Broad band slurry injection gave dry matter yield at the seven-leaf stage equal to or higher than mineral P fertilizer.
- Organ / stage
- seven-leaf stagee1
- Treatment
- broad band slurry injectione1
- Outcome
- dry matter yielde1
- Direction
- equal to or highere1
- Comparator
- mineral P fertilizere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“After broad band slurry injection, the P concentration in maize tissues at the five-leaf stage and the dry matter yield at the seven-leaf stage were equal to or higher than the mineral P fertilizer treatment”
Claim · model-written summary
Strongly acidified slurry (pH 3.8) gave 49% higher P uptake at the seven-leaf stage than untreated slurry, but only on the sandy soil.
- Organ / stage
- seven-leaf stagee2
- Treatment
- strongly acidified slurry (pH 3.8)e2
- Outcome
- PUe2
- Direction
- highere2
- Value
- 49%e2
- Qualifier
- only on the sandy soile2
- Comparator
- untreated slurrye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“After broad band slurry injection, the P concentration in maize tissues at the five-leaf stage and the dry matter yield at the seven-leaf stage were equal to or higher than the mineral P fertilizer treatment”
e2“Treatments with strongly acidified slurry (pH 3.8) had 49% higher PU at the seven-leaf stage compared to untreated slurry, but only on the sandy soil”
Claim · model-written summary
Application time had no effect on the measured maize response to slurry injection.
Not reportedComparatorOutcome
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“After broad band slurry injection, the P concentration in maize tissues at the five-leaf stage and the dry matter yield at the seven-leaf stage were equal to or higher than the mineral P fertilizer treatment”
e3“Application time had no effect”
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