Soja- PADRÕES DE CRESCIMENTO DA SOJA (FEPAGRO RS-10) EM PLANTIO DIRETO E PREPARO

http://agromet.cpatu.embrapa.br/publicacoes/lucieta-guerreiro-martorano-dra/em-anais-e-congressos/ano-de-2005/Martorano%20et%20al_2005.pdf

PADRÕES DE CRESCIMENTO DA SOJA (FEPAGRO RS-10) EM PLANTIO DIRETO E PREPARO
CONVENCIONAL, IRRIGADO E NÃO IRRIGADO

Lucieta Guerreiro Martorano1, Homero Bergamaschi2, Genei Antonio Dalmago3, Flávia Comiran4, Cleusa A. M.
Bianchi5 Tatiana S. Almeida6, Bruna M. M. Heckler4, Antônio Carlos Girotto Júnior7
1 Embrapa Solos. Doutoranda em Fitotecnia/Agrometeorologia na UFRGS. CP 15100, CEP 91.501-970, Porto Alegre, RS, Brasil.
E-mail: [e-mail].
2 Dr., Prof. Fac. Agronomia da UFRGS. Bolsista do CNPq. E-mail: [e-mail].
3 Eng. Agro, Dr. Depto. de Plantas Forrageiras e Agrometeorologia/UFRGS. E-mail: [e-mail]. Bolsista PD/CNPq.
4 Acadêmica da Faculdade de Agronomia/UFRGS. Bolsista PIBIC/CNPq.
5 Eng. Agro, Mestre em Agrometeorologia. Bolsista do Projeto CONAB.
6 Mestranda em Fitotecnia/Agrometeorologia na UFRGS. Bolsista CAPES.
7 Acadêmico da Faculdade de Agronomia/UFRGS. Bolsista BIC/CNPq.ABSTRACT- In an experiment conducted in Eldorado do Sul, Rio Grande do Sul State, Brazil, the growth pattern of soybean under conventional tillage (CT) and no-tillage (NT), with irrigation (I) and no-irrigation (NI), was evaluated. The cv. Fepagro RS-10 was sown on
November 20, 2003. Crop growth and meteorological variables were monitored during the entire crop cycle.
The flowering process started at 62 days after the plant emergence (DAE) and ended at 84 DAE. The cycle was concluded at 146 DAE. In the absence of water stress, the crop growth was similar in all treatments. From mid
December, rain became scarce. At 60 DAE the LAI was similar in irrigated CT and NT treatments, whereas in non-irrigated treatment the LAI was higher in NT than in
CT treatment. Before the beginning of the flowering stage the crop growth rate (CGR) of irrigated CT treatment was higher than that of irrigated NT. But,