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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
03/06/1992 |
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Data da última atualização: |
03/06/1992 |
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Autoria: |
REDDY, S. J. |
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Afiliação: |
FAO. |
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Título: |
Agroclimatic classification of the semi-arid tropics. IV. Classification of India, Senegal and Upper Volta. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Agricultural Meteorology, v.30, p.293-325, 1984. |
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Idioma: |
Inglês |
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Conteúdo: |
To arrange the 190 locations in India, Senegal and Upper Volta ainfo finite groups, numerical taxonomic techniques were adopted, using 11 agroclimatic variables derived from parts, I, II and III of this study. The results obtained using the data matrix of 7 principal coordinates with Eucliden metric - unweighted pair group method using arithmetic averages (UPGMA) fusion strategy appear to be the most suitable to identify groups formed in India and West Africa. In general, this study separated the highly undependable locations with different effective rainy periods. The groups identified are not homogeneous in terms of dependability defining dry-seeding feasibility, at the lower end of the range, and water-logging hazards. Therefore, to overcome this problem, the groups were first arranged into 3 broad zones, namely arid, semi-arid and sub-humid according to a modified Thornthwaite approach, and the semi-arid locations were further divided into 5 zones based on theeffective rainy period related to the copping pattern. As the primary groupings refer to the most stable situation, they were again divided into 5 sub-zones each based on the level of dependability, which was characterized by the standard deviation of the commencement time of sowing rains. To account for some of the operational problems, such as water-logging, availability of field work days for cultural operations, etc., they were further divided into groups and sub-groups based on wet and dry spells and aridity index. The derived zones and ... MenosTo arrange the 190 locations in India, Senegal and Upper Volta ainfo finite groups, numerical taxonomic techniques were adopted, using 11 agroclimatic variables derived from parts, I, II and III of this study. The results obtained using the data matrix of 7 principal coordinates with Eucliden metric - unweighted pair group method using arithmetic averages (UPGMA) fusion strategy appear to be the most suitable to identify groups formed in India and West Africa. In general, this study separated the highly undependable locations with different effective rainy periods. The groups identified are not homogeneous in terms of dependability defining dry-seeding feasibility, at the lower end of the range, and water-logging hazards. Therefore, to overcome this problem, the groups were first arranged into 3 broad zones, namely arid, semi-arid and sub-humid according to a modified Thornthwaite approach, and the semi-arid locations were further divided into 5 zones based on theeffective rainy period related to the copping pattern. As the primary groupings refer to the most stable situation, they were again divided into 5 sub-zones each based on the level of dependability, which was characterized by the standard deviation of the commencement time of sowing rains. To account for some of the operational problems, such as water-logging, availability of field work days for cultural operations, etc., they were further divided into groups and sub-groups based on wet and dry spells and aridity ... Mostrar Tudo |
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Palavras-Chave: |
Agroclimatologia; Semi-arid tropic; Tropico semi-arido. |
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Thesagro: |
Meteorologia. |
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Thesaurus Nal: |
agroclimatology; meteorology. |
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Categoria do assunto: |
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Marc: |
LEADER 02099naa a2200193 a 4500
001 1071099
005 1992-06-03
008 1984 bl --- 0-- u #d
100 1 $aREDDY, S. J.
245 $aAgroclimatic classification of the semi-arid tropics. IV. Classification of India, Senegal and Upper Volta.
260 $c1984
520 $aTo arrange the 190 locations in India, Senegal and Upper Volta ainfo finite groups, numerical taxonomic techniques were adopted, using 11 agroclimatic variables derived from parts, I, II and III of this study. The results obtained using the data matrix of 7 principal coordinates with Eucliden metric - unweighted pair group method using arithmetic averages (UPGMA) fusion strategy appear to be the most suitable to identify groups formed in India and West Africa. In general, this study separated the highly undependable locations with different effective rainy periods. The groups identified are not homogeneous in terms of dependability defining dry-seeding feasibility, at the lower end of the range, and water-logging hazards. Therefore, to overcome this problem, the groups were first arranged into 3 broad zones, namely arid, semi-arid and sub-humid according to a modified Thornthwaite approach, and the semi-arid locations were further divided into 5 zones based on theeffective rainy period related to the copping pattern. As the primary groupings refer to the most stable situation, they were again divided into 5 sub-zones each based on the level of dependability, which was characterized by the standard deviation of the commencement time of sowing rains. To account for some of the operational problems, such as water-logging, availability of field work days for cultural operations, etc., they were further divided into groups and sub-groups based on wet and dry spells and aridity index. The derived zones and ...
650 $aagroclimatology
650 $ameteorology
650 $aMeteorologia
653 $aAgroclimatologia
653 $aSemi-arid tropic
653 $aTropico semi-arido
773 $tAgricultural Meteorology$gv.30, p.293-325, 1984.
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Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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Biblioteca |
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| Registros recuperados : 21 | |
| 10. |  | REDDY, S. J. Irrigation scheduling using ICSWAB model. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 18, n. 9, p. 1121-1126, out. 1983.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
| Biblioteca(s): Embrapa Semiárido; Embrapa Unidades Centrais. |
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| Registros recuperados : 21 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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