2010
DOI: 10.1590/s0006-87052010000300012
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Interferência entre espécies de planta daninha e duas cultivares de feijoeiro em duas épocas de semeadura

Abstract: RESUMOO Brasil é o maior produtor mundial de feijão, mas a interferência das plantas daninhas pode causar reduções de produtividade entre 15% e 80%, devido a fatores como cultivar de feijoeiro e espécies de plantas daninhas presentes na área. Objetivou-se com este trabalho avaliar os efeitos de seis espécies de plantas daninhas sobre o crescimento e a produtividade de duas cultivares de feijoeiro, em duas safras. Observou-se que as plantas eudicotiledôneas causam maior interferência na cultura, principalmente … Show more

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Cited by 24 publications
(20 citation statements)
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“…The species from the Amaranthus genus can cause great losses because they have a high initial growth vigor, efficient root system and seed dormancy, and they can also host plant pathogens (Carvalho and Christoffoleti, 2008). Barroso et al (2010), in a study that assessed competitiveness of several species of weeds on beans, in two sowing periods, saw that A. viridis showed to be the most aggressive among all, causing harm in the growth and development of beans, with reductions that reached 80% in the final productivity of the crop. According to Lorenzi (2008), the species from the Amaranthus sp.…”
Section: Resultsmentioning
confidence: 99%
“…The species from the Amaranthus genus can cause great losses because they have a high initial growth vigor, efficient root system and seed dormancy, and they can also host plant pathogens (Carvalho and Christoffoleti, 2008). Barroso et al (2010), in a study that assessed competitiveness of several species of weeds on beans, in two sowing periods, saw that A. viridis showed to be the most aggressive among all, causing harm in the growth and development of beans, with reductions that reached 80% in the final productivity of the crop. According to Lorenzi (2008), the species from the Amaranthus sp.…”
Section: Resultsmentioning
confidence: 99%
“…As a function of the duration of the coexistence period, the interference periods can be estimated: PBI (period before interference), TPIP (total period of interference prevention) and CPIP (critical period of interference prevention), according to Pitelli and Durigan (1984). The duration of these periods is dependent on management conditions, such as fertilization (Bressanin et al, 2013), irrigation (Adigun, 2005), seeding date (Barroso et al, 2010), crop system (Horta et al, 2004), etc. Application of residual herbicides (such as atrazine) can also affect the CPIP, mainly by altering the local weed community.…”
Section: Introductionmentioning
confidence: 99%
“…Esse fato é decorrente, entre outros fatores, da interferência de plantas daninhas (Teixeira et al, 2009), que pode representar reduções de até 80% na produtividade de grãos (Barroso et al, 2010), sendo 20 a 30% do custo total de produção da cultura referente ao controle dessas plantas (Silva et al, 2000).…”
Section: Introductionunclassified