Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model
Tropical rice obtains a major portion of its N uptake from the soil as opposed to fertiliser nitrogen. Therefore N‐fertiliser recommendations should be based on the availability of soil nitrogen. This can be done by applying a total nutrient model, developed by Hildreth, which estimates yield as a f...
| Main Authors: | , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
1984
|
| Online Access: | https://hdl.handle.net/10568/166266 |
| _version_ | 1855542234392297472 |
|---|---|
| author | Smith, Joyotee Umali, Gloria |
| author_browse | Smith, Joyotee Umali, Gloria |
| author_facet | Smith, Joyotee Umali, Gloria |
| author_sort | Smith, Joyotee |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Tropical rice obtains a major portion of its N uptake from the soil as opposed to fertiliser nitrogen. Therefore N‐fertiliser recommendations should be based on the availability of soil nitrogen. This can be done by applying a total nutrient model, developed by Hildreth, which estimates yield as a function of an aggregated nitrogen variable incorporating both soil and applied N. This paper incorporates recent work on the quantification of available N, by soil scientists, into the total nutrient model to provide farm specific optimal N‐rates tailored to soil nutrient availability. The methodology, however, is only applicable to samples characterised by a high degree of internal homogeneity. |
| format | Journal Article |
| id | CGSpace166266 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1984 |
| publishDateRange | 1984 |
| publishDateSort | 1984 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1662662024-12-19T14:13:45Z Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model Smith, Joyotee Umali, Gloria Tropical rice obtains a major portion of its N uptake from the soil as opposed to fertiliser nitrogen. Therefore N‐fertiliser recommendations should be based on the availability of soil nitrogen. This can be done by applying a total nutrient model, developed by Hildreth, which estimates yield as a function of an aggregated nitrogen variable incorporating both soil and applied N. This paper incorporates recent work on the quantification of available N, by soil scientists, into the total nutrient model to provide farm specific optimal N‐rates tailored to soil nutrient availability. The methodology, however, is only applicable to samples characterised by a high degree of internal homogeneity. 1984-05 2024-12-19T12:56:03Z 2024-12-19T12:56:03Z Journal Article https://hdl.handle.net/10568/166266 en Wiley Smith, Joyotee; Umali, Gloria. 1984. Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model. J Agricultural Economics, Volume 35 no. 2 p. 231-241 |
| spellingShingle | Smith, Joyotee Umali, Gloria Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model |
| title | Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model |
| title_full | Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model |
| title_fullStr | Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model |
| title_full_unstemmed | Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model |
| title_short | Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model |
| title_sort | fertilizer recommendations based on soil nitrogen levels a total nutrient model |
| url | https://hdl.handle.net/10568/166266 |
| work_keys_str_mv | AT smithjoyotee fertilizerrecommendationsbasedonsoilnitrogenlevelsatotalnutrientmodel AT umaligloria fertilizerrecommendationsbasedonsoilnitrogenlevelsatotalnutrientmodel |