Criteria for assessment of the residual value of fertilizer phosphorus
Sorghum yield and P uptake response data from a field experiment conducted at the ICRISAT farm, Patancheru (near Hyderabad) consecutively for four years (1987–1990) were used for determining the residual value of fertilizer P under rainfed cropping on a Vertisol acutely deficient in P. There were se...
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
2000
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| Acceso en línea: | https://hdl.handle.net/10568/114072 |
| _version_ | 1855517895903150080 |
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| author | Sahrawat, K.L. |
| author_browse | Sahrawat, K.L. |
| author_facet | Sahrawat, K.L. |
| author_sort | Sahrawat, K.L. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Sorghum yield and P uptake response data from a field experiment conducted at the ICRISAT farm, Patancheru (near Hyderabad) consecutively for four years (1987–1990) were used for determining the residual value of fertilizer P under rainfed cropping on a Vertisol acutely deficient in P. There were seasonal differences in the residual values of P. But more importantly, the residual P value varied depending on the criteria employed for crop response. On an average, the residual value of fertilizer P in the succeeding season was 52 per cent as effective as the fresh P when dry matter yield response was used as the criterion. The residual value of applied P was found to be 47 per cent as effective using grain yield response as the criterion, and the residual P was only 35 per cent as effective as the fresh P when total P uptake response was used as the criterion. It is suggested that the dry matter yield response of sorghum is a simple and practical criterion for determining the residual value of fertilizer P under rainfed cropping. |
| format | Journal Article |
| id | CGSpace114072 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2000 |
| publishDateRange | 2000 |
| publishDateSort | 2000 |
| record_format | dspace |
| spelling | CGSpace1140722021-06-22T14:28:26Z Criteria for assessment of the residual value of fertilizer phosphorus Sahrawat, K.L. phosphorus residues vertisols sorghum bicolor rainfed farming yields Sorghum yield and P uptake response data from a field experiment conducted at the ICRISAT farm, Patancheru (near Hyderabad) consecutively for four years (1987–1990) were used for determining the residual value of fertilizer P under rainfed cropping on a Vertisol acutely deficient in P. There were seasonal differences in the residual values of P. But more importantly, the residual P value varied depending on the criteria employed for crop response. On an average, the residual value of fertilizer P in the succeeding season was 52 per cent as effective as the fresh P when dry matter yield response was used as the criterion. The residual value of applied P was found to be 47 per cent as effective using grain yield response as the criterion, and the residual P was only 35 per cent as effective as the fresh P when total P uptake response was used as the criterion. It is suggested that the dry matter yield response of sorghum is a simple and practical criterion for determining the residual value of fertilizer P under rainfed cropping. 2000 2021-06-22T14:28:26Z 2021-06-22T14:28:26Z Journal Article https://hdl.handle.net/10568/114072 en Limited Access Sahrawat K.L.Criteria for assessment of the residual value of fertilizer phosphorus. Journal of the Indian Society of Soil Science.2000, Volume 48, Issue 1: 113-118. |
| spellingShingle | phosphorus residues vertisols sorghum bicolor rainfed farming yields Sahrawat, K.L. Criteria for assessment of the residual value of fertilizer phosphorus |
| title | Criteria for assessment of the residual value of fertilizer phosphorus |
| title_full | Criteria for assessment of the residual value of fertilizer phosphorus |
| title_fullStr | Criteria for assessment of the residual value of fertilizer phosphorus |
| title_full_unstemmed | Criteria for assessment of the residual value of fertilizer phosphorus |
| title_short | Criteria for assessment of the residual value of fertilizer phosphorus |
| title_sort | criteria for assessment of the residual value of fertilizer phosphorus |
| topic | phosphorus residues vertisols sorghum bicolor rainfed farming yields |
| url | https://hdl.handle.net/10568/114072 |
| work_keys_str_mv | AT sahrawatkl criteriaforassessmentoftheresidualvalueoffertilizerphosphorus |