Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Artículo Open Access |
| Published: |
Wiley
2025
|
| Subjects: | |
| Online Access: | https://acsess.onlinelibrary.wiley.com/doi/10.1002/agg2.70039 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- Approximately 15% of Miscanthus yield is lost at current commercial cutting heights in Iowa Bryan Petersen Shah‐Al Emran Fernando Miguez Emily Heaton Andy VanLoocke Agrosystems, Geosciences & Environment AbstractVarious works have quantitatively characterized the effects of environmental and management factors on Miscanthus giganteus Greef et Deu (mxg) yield and, therefore, anticipated land requirement per unit production. However, little work has addressed the effects of cutting height, which may significantly contribute to the difference between the standing aboveground biomass at harvest (i.e., biological yield) and harvested yield. This study quantitatively characterized the effect of cutting height using a replicated nitrogen trial of a 5‐year‐old mxg stand in southeast Iowa and related this information to observations of cutting height in nearby commercial fields. Nitrogen fertilizer did not significantly change the relationship of the stem segment mass to length, and overall, a 1‐cm stem segment contributes 0.5% of the total stem biomass within the bottom 44 cm of the stem. This results in an average harvest loss of 15% of the aboveground standing biomass when cutting at 30 cm, typically seen in commercial mxg fields in eastern Iowa. Cutting height should be considered when accurately predicting commercial mxg harvest yields and changes in soil organic carbon in a commercial mxg agroecosystem. 10.1002/agg2.70039 http://creativecommons.org/licenses/by/4.0/