Assessing potentially available nitrogen in Saskatchewan using the Illinois amino sugar-N test
| dc.date.accessioned | 2018-08-06T13:45:48Z | |
| dc.date.available | 2018-08-06T13:45:48Z | |
| dc.date.issued | 2005-02-17 | |
| dc.description.abstract | A 3-year study conducted at four sites across Saskatchewan examined the responsiveness of wheat in different landscape positions to nitrogen (N) fertilizer additions. Failure to obtain a strong relationship between the traditional nitrate test and grain yield suggested the need for a soil test measurement that can more accurately predict the N-supplying power of a wide range of soils. The Illinois amino sugar-N (ASN) test, which estimates amino sugars as a potentially mineralizable fraction of soil organic matter, was performed on the study soils to determine if it could act as a more stable predictor of the responsiveness of crops to fertilizer N additions. Amino sugar-N was found to be significantly correlated to both unfertilized yield and yield response across all site-years. However, the correlation between ASN and yield response was variable between sites and landscape positions. Step-wise regressions developed to predict yield response indicated that spring nitrate levels, soil organic matter, and soil moisture are important in predicting yield response, although low R2 values suggest a large amount of variability is still unaccounted for by these variables. Additional research will be required before the Illinois ASN test can be adopted to the Canadian prairies. | en_US |
| dc.description.version | Non-Peer Reviewed | |
| dc.identifier.uri | http://hdl.handle.net/10388/9514 | |
| dc.language.iso | en | en_US |
| dc.relation.ispartof | Soils and Crops Workshop | |
| dc.rights | Attribution-NonCommercial-NoDerivs 2.5 Canada | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/2.5/ca/ | * |
| dc.title | Assessing potentially available nitrogen in Saskatchewan using the Illinois amino sugar-N test | en_US |
| dc.type | Poster Presentation | en_US |