Data/hora: 24/06/2024 01:01:25

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 16/01/2003
Data da última atualização: | 14/11/2018
Autoria: | BASTOS, E. A.; FOLETATTI, M. V.; FARIA, R. T. de; ANDRADE JÚNIOR, A. S. de; CARDOSO, M. J.
Afiliação: | EDSON ALVES BASTOS, CPAMN; Marcos Vinícius Folegatti, Escola Superior de Agricultura Luiz de Queiroz - Esalq/Departamento de Engenharia Rural; Rogério Teixeira de Faria, Instituto Agronômico do Paraná - IAPAR; Aderson Soares de Andrade Júnior, CPAMN; Milton José Cardoso, CPAMN.
Título: | Simulation of growth and development of irrigated cowpea in Piauí State by CROPGRO model.
Ano de publicação: | 2002
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 37, n. 10, p. 1381-1387, out. 2002
Idioma: | Inglês
Notas: | Título em português: Simulação do crescimento e desenvolvimento do caupi irrigado no Estado do Piauí pelo modelo CROPGRO.
Conteúdo: | The objective of this work was to adapt the CROPGRO model, which is part of the DSSAT system, for simulating the cowpea (Vigna unguiculata) growth and development under soil and climate conditions of the Baixo Parnaíba region, Piauí State, Brazil. In the CROPGRO, only input parameters that define crop species, cultivars, and ecotype were changed in order to characterize the cowpea crop. Soil and climate files were created for the considered site. Field experiments without water deficit were used to calibrate the model. In these experiments, dry matter (DM), leaf area index (LAI), yield components and grain yield of cowpea (cv. BR 14 Mulato) were evaluated. The results showed good fit for DM and LAI estimates. The medium values of R2 and medium absolute error (MAE) were, respectively, 0.95 and 264.9 kg ha-1 for DM, and 0.97 and 0.22 for LAI. The difference between observed and simulated values of plant phenology varied from 0 to 3 days. The model also presented good performance for yield components simulation, excluding 100-grain weight, for which the error ranged from 20.9% to 34.3%. Considering the medium values of crop yield in two years, the model presented an error from 5.6%.
Palavras-Chave: | disponibilidade hídrica; DSSAT; edaphic factor; fator climático; fator edáfico; modelo; water availability.
Thesagro: | Vigna Unguiculata.
Thesaurus Nal: | climatic factors; models.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/24057/1/1381.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (24057-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS