| Autor: |
Kyle A. Hoegenauer, Trenton L. Roberts, Jarrod T. Hardke, Carrie C. Ortel, Nathan A. Slaton |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Agrosystems, Geosciences & Environment, Vol 3, Iss 1, Pp n/a-n/a (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2639-6696 |
| DOI: |
10.1002/agg2.20134 |
| Popis: |
Abstract No post‐season analysis method currently exists for rice (Oryza sativa L.) to determine whether N was managed properly during the growing season. Our primary research objective was to determine whether post‐season, rice stem N concentrations can be used to predict if sufficient or excessive N was available. Aboveground biomass samples were taken from N response trials at harvest. Stalks were separated into 5‐cm segments starting at the soil surface and extending upward to 45 cm. One‐half of the samples had all of the leaf material (leaves and leaf sheaths) removed, whereas the other half remained intact. All samples were analyzed for N concentration in the form of amino acids (AA‐N), ammonium (NH4+–N), and nitrate (NO3––N). Samples analyzed with leaf material were found to be statistically different from samples analyzed without leaf material for all three forms of N (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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