Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1016/j.agsy.2023.103690 |
| Titel (primär) | Environmental potential for crop production and tenure regime influence fertilizer application and soil nutrient mining in soybean and maize crops |
| Autor | Leguizamón, Y.; Goldenberg, M.G.; Jobbágy, E.; Seppelt, R.; Garibaldi, L.A. |
| Quelle | Agricultural Systems |
| Erscheinungsjahr | 2023 |
| Department | CLE |
| Band/Volume | 210 |
| Seite von | art. 103690 |
| Sprache | englisch |
| Topic | T5 Future Landscapes |
| Keywords | Field crops; Crop nutrition; Decision making; Soil conservation; Nutrient mining; Tenure regime |
| Abstract | CONTEXT Differences in land tenure regimes are one challenge to implementing soil
conservation practices in agricultural systems. It is frequently assumed that
tenants are less likely to adopt soil conservation strategies than owners,
given a shorter-term engagement with the field. Also, the field's environmental
potential (i.e., potential for agricultural production) may influence farmers'
investment decisions, since high-potential fields increase the chances of
achieving a return on the investment. OBJECTIVE
Understand the effect of land tenure regimes and environmental potential
on fertilization rates and balance of nitrogen, phosphorus, and sulfur in
soybean and maize crops in Argentina. METHODS
We applied mixed-effects models on a database of 52,588 fields of
soybean and maize farms, covering a total area of 3.8 M ha in
Argentina during the period of 2017–2022. RESULTS AND CONCLUSIONS Overall, the balance of nitrogen,
phosphorus, and sulfur was (mean ± SE) −29.11 ± 0.15,
−2.58 ± 0.38, and 8.26 ± 0.044 kg ha−1 yr−1,
respectively. Despite 8.04 and 0.63 kg ha−1 yr−1
more nitrogen and phosphorus were applied in high-potential compared to
low-potential maize fields, nutrient outputs were still higher. Therefore, net
nutrient exports of the most productive fields increased by 9.99 and
2.06 kg ha−1 yr−1 for nitrogen and
phosphorus, respectively. In soybean fields, environmental potential had no
effect on nutrient application, but the net export of nitrogen and phosphorus
was 9.85 and 2.14 kg ha−1 yr−1 higher in
high-potential fields compared to low-potential fields. Tenure regime had a
weak effect, mainly on phosphorus. On average, owners applied
0.37 kg ha−1 yr−1 more and exported
0.28 kg ha−1 yr−1 less phosphorus than
tenants in both crops. Sulfur application and balance were weakly affected by
the studied variables, and the positive balance suggests overfertilization
under the assumptions of this paper. We conclude that the Argentine farming
system depletes some of the main nutrients, regardless of the field's
environmental potential or the land tenure system. The effect of the tenure
regime is overwhelmed by the impact of environmental potential on farmers'
fertilization management, with high-potential fields degrading due to soil
mining at a faster pace than low-potential fields, putting future yields at
risk. SIGNIFICANCE By exploring
a farming system based on nutrient depletion, our results contribute to the
general understanding of tenure regime consequences on soil degradation.
Argentinean farmers should consider increasing N and P application and
contemplate environmental heterogeneity to avoid nutrient mining and
degradation of one of the most productive areas of the world. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=27099 |
| Leguizamón, Y., Goldenberg, M.G., Jobbágy, E., Seppelt, R., Garibaldi, L.A. (2023): Environmental potential for crop production and tenure regime influence fertilizer application and soil nutrient mining in soybean and maize crops Agric. Syst. 210 , art. 103690 10.1016/j.agsy.2023.103690 |
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