2003
DOI: 10.1590/s0100-83582003000200001
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Abstract: O potencial competitivo das plantas pelos recursos de crescimento do meio é afetado por suas características morfofisiológicas. Ainda não há consenso sobre qual característica da planta de arroz irrigado é mais importante na determinação da sua capacidade competitiva com as plantas daninhas. Este trabalho teve como objetivo identificar características da planta de arroz irrigado por inundação que mais contribuam na competitividade da cultura. Nesse sentido, conduziu-se um experimento em campo no ano agrícola 2… Show more

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Cited by 25 publications
(21 citation statements)
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“…The dense canopy of cultivated plants with high soil covering reduces the quantity and quality of light available to weeds, reducing the net photosynthesis of these plants and, consequently, its competitiveness for water, light and nutrients (BALBINOT JR. et al, 2003b). In soybean, it was possible to observe that genotypes with higher capacity of soil covering at the beginning of the cycle showed greater ability to compete with Bidens spp.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The dense canopy of cultivated plants with high soil covering reduces the quantity and quality of light available to weeds, reducing the net photosynthesis of these plants and, consequently, its competitiveness for water, light and nutrients (BALBINOT JR. et al, 2003b). In soybean, it was possible to observe that genotypes with higher capacity of soil covering at the beginning of the cycle showed greater ability to compete with Bidens spp.…”
Section: Resultsmentioning
confidence: 99%
“…Researches conducted with rice (BALBINOT JR. et al, 2003a;BALBINOT JR. et al, 2003b), wheat (LEMERLE et al, 2001), maize (BEGNA et al, 2001.;FLECK, 2005) and soybean (FLECK, VERBEEK;ORCHARD, 2007) indicate that the growth rate is the key factor to increase crop competitiveness with weeds. The early establishment of plants confers advantage in the use of environmental resources.…”
Section: Introductionmentioning
confidence: 99%
“…The beneficial effect of water depth on weed control is emphasized by several authors, such as Balbinot Jr. et al (2003) and Machado et al (2006), who highlight water action eliminating available oxygen to weed roots, thus triggering a series of reactions that culminate in increased weed control. On the other hand, submersion decreases H 2 O 2 levels in plants that have the ability to adapt to these conditions and may reduce herbicides effects.…”
Section: Experiments IImentioning
confidence: 99%
“…Estes resultados estão de acordo com Concenço et al (2006b), que comprova que o efeito das plantas daninhas na cultura do arroz reduz a fitomassa seca e a altura de plantas. Resultados inferiores no controle de capim-arroz provocam redução no rendimento de grãos da cultura (Andrade, 1982;Andres & Menezes, 1997;Balbinot Jr. et al, 2003).…”
Section: O Rendimento De Grãos Foi Influenciado Por (A) (H) (D) (Aunclassified
“…Entretanto, cabe ressaltar que na época mais tardia observou-se redução no controle (maior número de colmos de capim por metro) (Figura 8) e, ainda, houve efeito negativo sobre o rendimento de grãos (Figura 9). Pode-se inferir ainda que em anos mais secos o efeito do retardamento poderá ser mais acentuado em função do estresse hídrico das plantas de arroz, associado ao efeito de competição das plantas daninhas sobre a cultura (Lauretti et al, 2001;Balbinot Jr. et al, 2003;Menezes & Ramirez, 2003).…”
Section: O Rendimento De Grãos Foi Influenciado Por (A) (H) (D) (Aunclassified