2012
DOI: 10.1590/s0100-83582012000100006
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Efeito da densidade e da distância de caruru-de-mancha e amendoim-bravo na cultura do feijoeiro

Abstract: O objetivo deste trabalho foi avaliar a interferência causada pelo caruru-demancha (Amaranthus viridis) e amendoim-bravo (Euphorbia heterophylla), em função das densidades e distâncias, no feijoeiro (Phaseolus vulgaris) cultivar Pérola. Como recipientes, foram utilizadas caixas de cimento-amianto, com capacidade para 50 litros, preenchidas com LatossoloVermelho-Escuro. As mudas foram formadas em bandejas de 128 células preenchidas com substrato hortícola; quando as plântulas atingiram o estádio V2, foram trans… Show more

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Cited by 4 publications
(2 citation statements)
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“…Plants of the Amaranthus genus have Kranz leaf anatomy (Ferreira et al, 2003), typical of species with C4 photosynthetic cycle, providing efficiency in the production of carbohydrates in wormer and drier environments, especially when compared to C3 crops, such as soybean and cotton (Carvalho, 2015). These features render Amaranthus a high competitive ability with crops for light, water, and nutrients (Guo & Al-Khatib, 2003;Silva et al, 2010;Barroso et al, 2012). The negative interference intensity of Amaranth on crop growth, development, and yield is dependent on the crop species, density and time of emergence (Klingaman & Oliver, 1994;Knezevic et al, 1997).…”
Section: Introductionmentioning
confidence: 99%
“…Plants of the Amaranthus genus have Kranz leaf anatomy (Ferreira et al, 2003), typical of species with C4 photosynthetic cycle, providing efficiency in the production of carbohydrates in wormer and drier environments, especially when compared to C3 crops, such as soybean and cotton (Carvalho, 2015). These features render Amaranthus a high competitive ability with crops for light, water, and nutrients (Guo & Al-Khatib, 2003;Silva et al, 2010;Barroso et al, 2012). The negative interference intensity of Amaranth on crop growth, development, and yield is dependent on the crop species, density and time of emergence (Klingaman & Oliver, 1994;Knezevic et al, 1997).…”
Section: Introductionmentioning
confidence: 99%
“…The genus contains broadleaf weed species with several traits which have become major global weeds that are very difficult to control, including the C4 photosynthetic pathway, a high growth rate, and great genetic variability. Besides, traits include tolerance to stress, high fecundity, a high viable seed production rate, and the ability to be selected for herbicide resistance [11,[13][14][15]. The first report of HR A. hybridus was in the USA in 1972 to atrazine [1].…”
Section: Introductionmentioning
confidence: 99%