| Autor: |
Julia Barra Netto‐Ferreira, Diego Arruda Huggins deSá Leitão, Winniefred Griffin, Lakesh K. Sharma, Gabriel Maltais‐Landry |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Agrosystems, Geosciences & Environment, Vol 7, Iss 3, Pp n/a-n/a (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2639-6696 |
| DOI: |
10.1002/agg2.20557 |
| Popis: |
Abstract A sorghum sudangrass (SSG) cover crop grown after a cash crop could take up residual nitrogen (N) before it is lost. As in‐field monitoring of SSG properties is laborious, predicting biomass and N concentrations with spectral sensors could be useful. At two sites in Live Oak, Florida, we evaluated the response of SSG to residual N from previous N fertilization and the performance of handheld and satellite sensors in estimating SSG properties. We quantified aboveground biomass, plant N, leaf greenness (NDVI), net potential N mineralization (PNM), and soil permanganate oxidizable carbon (POXC). Residual N did not affect SSG properties, PNM was highest at the highest N input rate in one site, and soil POXC was correlated with SSG properties (biomass and plant N). NDVI measured from a handheld sensor better predicted SSG properties than satellite imagery in these small plots, suggesting a greater potential to be a useful management tool. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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