Método para estimar con eficiencia la incidencia de roya en plantaciones de cafetos :
Two systematic patterns were evaluated for efficiency in estimating coffee rust (Hemileia vastatrix) incidence in lots of Caturra and Bourbon. True disease incidence was determined in the middle third of each tree in the selected lot. The different sampling patterns were compared on the basis of the bias and standard error of the estimated incidences obtained with computer simulations of different combinations of sample sizes, average incidence and patterns of spatial dispersion for the disease. Theparallel row pattern was at least as efficient as the traditionally recommended W pattern. In order to attain better estimates of coffee rust incidence, it seems more important to sample more leaves per tree than more trees per field. The recommended protocol for estimating rust incidence in coffee plantations is described.
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| Format: | biblioteca |
| Language: | eng |
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2000
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| Subjects: | COFFEA, HEMILEIA VASTATRIX, ORGANISMOS PATOGENOS, ENFERMEDADES DE LAS PLANTAS, DISTRIBUCION ESPACIAL, MUESTREO, PUERTO RICO, |
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KOHA-OAI-BVE:893532020-02-03T21:57:19ZMétodo para estimar con eficiencia la incidencia de roya en plantaciones de cafetos : 88934 Macchiavelli, R.E. 112474 Rodríguez, R. del P. 2000engTwo systematic patterns were evaluated for efficiency in estimating coffee rust (Hemileia vastatrix) incidence in lots of Caturra and Bourbon. True disease incidence was determined in the middle third of each tree in the selected lot. The different sampling patterns were compared on the basis of the bias and standard error of the estimated incidences obtained with computer simulations of different combinations of sample sizes, average incidence and patterns of spatial dispersion for the disease. Theparallel row pattern was at least as efficient as the traditionally recommended W pattern. In order to attain better estimates of coffee rust incidence, it seems more important to sample more leaves per tree than more trees per field. The recommended protocol for estimating rust incidence in coffee plantations is described.Two systematic patterns were evaluated for efficiency in estimating coffee rust (Hemileia vastatrix) incidence in lots of Caturra and Bourbon. True disease incidence was determined in the middle third of each tree in the selected lot. The different sampling patterns were compared on the basis of the bias and standard error of the estimated incidences obtained with computer simulations of different combinations of sample sizes, average incidence and patterns of spatial dispersion for the disease. Theparallel row pattern was at least as efficient as the traditionally recommended W pattern. In order to attain better estimates of coffee rust incidence, it seems more important to sample more leaves per tree than more trees per field. The recommended protocol for estimating rust incidence in coffee plantations is described.COFFEAHEMILEIA VASTATRIXORGANISMOS PATOGENOSENFERMEDADES DE LAS PLANTASDISTRIBUCION ESPACIALMUESTREOPUERTO RICOJournal of Agriculture of the University of Puerto Rico (Puerto Rico) |
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Costa Rica |
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biblioteca |
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Sistema de Bibliotecas IICA/CATIE |
| language |
eng |
| topic |
COFFEA HEMILEIA VASTATRIX ORGANISMOS PATOGENOS ENFERMEDADES DE LAS PLANTAS DISTRIBUCION ESPACIAL MUESTREO PUERTO RICO COFFEA HEMILEIA VASTATRIX ORGANISMOS PATOGENOS ENFERMEDADES DE LAS PLANTAS DISTRIBUCION ESPACIAL MUESTREO PUERTO RICO |
| spellingShingle |
COFFEA HEMILEIA VASTATRIX ORGANISMOS PATOGENOS ENFERMEDADES DE LAS PLANTAS DISTRIBUCION ESPACIAL MUESTREO PUERTO RICO COFFEA HEMILEIA VASTATRIX ORGANISMOS PATOGENOS ENFERMEDADES DE LAS PLANTAS DISTRIBUCION ESPACIAL MUESTREO PUERTO RICO 88934 Macchiavelli, R.E. 112474 Rodríguez, R. del P. Método para estimar con eficiencia la incidencia de roya en plantaciones de cafetos : |
| description |
Two systematic patterns were evaluated for efficiency in estimating coffee rust (Hemileia vastatrix) incidence in lots of Caturra and Bourbon. True disease incidence was determined in the middle third of each tree in the selected lot. The different sampling patterns were compared on the basis of the bias and standard error of the estimated incidences obtained with computer simulations of different combinations of sample sizes, average incidence and patterns of spatial dispersion for the disease. Theparallel row pattern was at least as efficient as the traditionally recommended W pattern. In order to attain better estimates of coffee rust incidence, it seems more important to sample more leaves per tree than more trees per field. The recommended protocol for estimating rust incidence in coffee plantations is described. |
| format |
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| topic_facet |
COFFEA HEMILEIA VASTATRIX ORGANISMOS PATOGENOS ENFERMEDADES DE LAS PLANTAS DISTRIBUCION ESPACIAL MUESTREO PUERTO RICO |
| author |
88934 Macchiavelli, R.E. 112474 Rodríguez, R. del P. |
| author_facet |
88934 Macchiavelli, R.E. 112474 Rodríguez, R. del P. |
| author_sort |
88934 Macchiavelli, R.E. |
| title |
Método para estimar con eficiencia la incidencia de roya en plantaciones de cafetos : |
| title_short |
Método para estimar con eficiencia la incidencia de roya en plantaciones de cafetos : |
| title_full |
Método para estimar con eficiencia la incidencia de roya en plantaciones de cafetos : |
| title_fullStr |
Método para estimar con eficiencia la incidencia de roya en plantaciones de cafetos : |
| title_full_unstemmed |
Método para estimar con eficiencia la incidencia de roya en plantaciones de cafetos : |
| title_sort |
método para estimar con eficiencia la incidencia de roya en plantaciones de cafetos : |
| publishDate |
2000 |
| work_keys_str_mv |
AT 88934macchiavellire metodoparaestimarconeficiencialaincidenciaderoyaenplantacionesdecafetos AT 112474rodriguezrdelp metodoparaestimarconeficiencialaincidenciaderoyaenplantacionesdecafetos |
| _version_ |
1756059943979450368 |