Efeitos de períodos de controle e de convivência de plantas daninhas na cultura da alface

Andréia Cristina Silva; Humberto Silva Santos; Carlos Alberto Scapim; Jamil Constantin

doi:10.4025/actasciagron.v21i0.4295

Effects of control periods and the presence of weeds in lettuce culture

Authors

Andréia Cristina Silva Agência Paulista de Tecnologia dos Agronegócios, Pólo Regional da Alta Sorocabana. Author
Humberto Silva Santos UEM Author
Carlos Alberto Scapim UEM Author
Jamil Constantin UEM Author

DOI:

https://doi.org/10.4025/actasciagron.v21i0.4295

Keywords:

alface, plantas daninhas, competição

Abstract

The effects of different control periods and the presence of weeds in lettuce, cv. Elisa, were evaluated. The treatments consisted of maintaining the culture in the presence or absence of weeds for periods of 7, 14, 21, 28, 35, 42 e 49 days after transplantation. A control period of 14 days was enough for the crop to show its productive potential. For crescent periods in the presence of weeds, the crop can live with the infesting community for a period of 28 days without yield reduction. Thus, the duration of the total period of interference prevention (TPIP) was 14 days, and the period that precedes the interference (PPI) was of 28 days, showing that just one elimination of weeds in the interval between the end of TPIP and the end of PPI, that is, between 14 and 28 days, would be enough to prevent interference.

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Author Biography

Andréia Cristina Silva, Agência Paulista de Tecnologia dos Agronegócios, Pólo Regional da Alta Sorocabana.

Possui graduação em Agronomia pela Universidade Estadual de Londrina (1996), mestrado em Produção Vegetal pela Universidade Estadual de Maringá (1999) e doutorado em Fitotecnia (Produção Vegetal) pela Universidade Federal de Viçosa (2005). Atualmente é pesquisadora científica l da Agência Paulista de Tecnologia dos Agronegócios. Tem experiência na área de Agronomia, com ênfase em Matologia, atuando principalmente nos seguintes temas: plantas daninhas, herbicidas, manejo integrado, fitotecnia e integração agricultura-pecuária.

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PDF (Portuguese)

Published

2008-07-14

Issue

Vol. 21 (1999)

Section

Agronomy

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How to Cite

Effects of control periods and the presence of weeds in lettuce culture. (2008). Acta Scientiarum. Agronomy, 21, 473-478. https://doi.org/10.4025/actasciagron.v21i0.4295