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Medientyp:
E-Artikel
Titel:
Long-Term Compost Application and the Impact of Soil P Legacy on the Enhancement of Early Maize Growth
Beteiligte:
Redel, Yonathan
[VerfasserIn];
Kunz, Elena
[VerfasserIn];
Hartmann, Tobias E.
[VerfasserIn];
Müller, Torsten
[VerfasserIn];
Bol, Roland
[VerfasserIn]
Erschienen:
Springer International Publishing, 2021
Erschienen in:Journal of soil science and plant nutrition 21(1), 873 - 881 (2021). doi:10.1007/s42729-020-00407-7
Sprache:
Englisch
DOI:
https://doi.org/10.1007/s42729-020-00407-7
ISSN:
0718-2791;
0718-9508;
0717-635X;
0718-9516
Entstehung:
Anmerkungen:
Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
Beschreibung:
Throughout the world, compost application is viewed as a long-term strategy to improve the availability of phosphorus (P) for agricultural crops. Limited information is available on the legacy effects of P in compost-amended soils with respect to the subsequent effects of mineral P fertilizer on crop growth. We therefore conducted two cycles of maize growth experiments in pots (replicates; n = 4) under greenhouse conditions, with each cycle lasting 84 days. We used two soils that had been fertilized with compost over the past 10 years. The first cycle of maize growth was carried out under full P fertilization conditions, i.e. 150 mg P kg−1 soil (300 kg P ha−1), as calcium dihydrogen phosphate. The second cycle of maize was grown in the same soil and pots after harvesting the first cycle. Plant and soil measurements included soil Hedley P fractions and plant P uptake. Readily available plant P NaHCO3-Pi ranged from 93 to 221 mg P kg−1, increasing by 31% due to compost and 76% due to Ca-P fertilization compared with no compost or Ca–P fertilization, respectively. However, the application of compost and fertilizer only increased the production of dry matter by 7–9%, and plant P uptake by 11% and 17% compared to previous compost and Ca–P applications, respectively. Compost protected against the depletion of the NaHCO3–Po pool and was therefore helpful to initiating a P legacy stock, enhancing soil resilience and limiting the depletion of P by future crop rotations with high P requirements. However, compost mixed with mineral P provided the best availability of P for both immediate crop requirements and the long-term preservation of soil fertility.