2008
DOI: 10.1590/s0100-83582008000200003
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Abstract: RESUMO -Na cultura do trigo, diversos fatores limitam a sua produtividade, dentre os quais se destaca a competição imposta por plantas daninhas. O objetivo deste trabalho foi determinar o período crítico de interferência das plantas daninhas na cultura do trigo e os efeitos da competição em variáveis morfológicas e nos componentes da produtividade. O experimento foi conduzido a campo, no ano de 2006, no Centro Agropecuário da Palma, Capão do Leão/RS. Os fatores testados foram períodos de convivência e controle… Show more

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Cited by 52 publications
(60 citation statements)
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“…This ABP reduction is due to the effects of inter specific competition, promoting less accumulation of dry mass of soybean. Similar results were observed in other studies with soybean crops (Fleck et al, 2002), and wheat (Agostinetto et al, 2008). For HI, there was a verified reduction of the variables when soybean coexisted with crabgrass during the Competition periods of crabgrass with rice and soybean crops entire development cycle in relation to the initial periods.…”
Section: Resultssupporting
confidence: 89%
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“…This ABP reduction is due to the effects of inter specific competition, promoting less accumulation of dry mass of soybean. Similar results were observed in other studies with soybean crops (Fleck et al, 2002), and wheat (Agostinetto et al, 2008). For HI, there was a verified reduction of the variables when soybean coexisted with crabgrass during the Competition periods of crabgrass with rice and soybean crops entire development cycle in relation to the initial periods.…”
Section: Resultssupporting
confidence: 89%
“…They were equivalent between the periods of coexistence until 35 DAE, differing only in their coexistence with crabgrass until 110 DAE, when the crop presented a minor HI, confirming what was observed for wheat crop (Agostinetto et al, 2008).…”
Section: Resultssupporting
confidence: 81%
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“…Usually, in weed competition, the crop tends to increase the height, to obtain an advantage in light competition as observed for the interference of Lolium multiflorum and Raphanus sativus with wheat (Agostinetto et al, 2008) and soybean in competition with Bidens spp., Sida rhombifolia and Raphanus sativus (Bianchi et al, 2006). However, this behavior can not be observed in soybean competition with hairy fleabane, because the increasing time interference decreased the soybean height.…”
Section: Resultsmentioning
confidence: 99%
“…A intensidade da competição normalmente é avaliada por meio de decréscimos de produção e/ou pela redução no crescimento da planta cultivada, como respostas à competição pelos recursos de crescimento disponíveis no ambiente -no caso, CO 2 , água, luz e nutrientes (Agostinetto et al, 2008). Dos vários fatores que alteram o balanço de interferência entre a cultura e as plantas daninhas, destaca-se o período em que ela e as plantas cultivadas estão competindo com os recursos do ambiente.…”
Section: Introductionunclassified