A field study was conducted in 2022 and 2023 at two different locations in Mississippi (MS) implementing a split-plot design. Nitrogen (N) rates as the main plot including 0 (control), 90, 180, 269 kg N ha-1 at Starkville and 224 kg N ha-1 at Stoneville. The subplot was seven treatments, including a no biostimulant (check) and six commercially available microbial biostimulants (Source Corn®, Envita®, iNvigorate®, Blue N®, Micro AZTM, and Bio level phosN®) applied either as foliar at V4-V5 growth stages or in-furrow at planting. Only N rates positively affected grain yield and nitrogen use efficiency at all site years. The agronomic optimum N rate (AONR) differed across all site years, ranging from 202, 128, and 166 kg N ha-1 at Starkville 2023 and Stoneville 2022 and 2023. In summary, microbial biostimulants within this study showed minimal to no effect on corn grain yield and all other tested parameters.
| Identifer | oai:union.ndltd.org:MSSTATE/oai:scholarsjunction.msstate.edu:td-7118 |
| Date | 10 May 2024 |
| Creators | Gajula, Praveen |
| Publisher | Scholars Junction |
| Source Sets | Mississippi State University |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | Theses and Dissertations |
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