2013
DOI: 10.1590/s0034-737x2013000100005
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Densidade populacional de Pratylenchus spp. em pastagens de Brachiaria spp. e sua influência na disponibilidade e na qualidade da forragem

Abstract: Population density of Pratylenchus spp. in pastures of Brachiaria spp. and its influence on the forage availability and qualityThe aim of this work was to evaluate the population density of Pratylenchus brachyurus and Pratylenchus zeae associated with Brachiaria brizantha, B. decumbens and B. humidicola and their influence on forage availability and quality. The experiment was conducted in the Hisaeda Farm, Terenos, MS, Brazil. Soil, roots and plant aerial part were harvest, with ten replications each, in one … Show more

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Cited by 9 publications
(6 citation statements)
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“…As a result, Brachiaria decumbens, Rhynchelytrum repens, Digitaria insularis, D. horizontalis and B. brizantha plants exhibited a final population varying from 6,981 and 6,239 specimens, differing statistically from the other species examined, being therefore the most favorable hosts for the nematode parasitism ( Table 2). The P. zea hosting behavior of B. brizantha, as observed in this study, corroborates the results obtained by Sharma et al (2001) and Carvalho (2013), who assessed pasturelands in the states of Acre and Mato Grosso do Sul and found this parasite spread in most of the areas examined. It is worth noting that the species of the genus Brachiaria spp., particularly Brachiaria brizantha, are considered excellent tropical forage plants and have been used as the main species in integrated croplivestock systems in the Brazilian mid-west because of its rusticity, tolerance to the dry winter in the region and the possibility of using it intercropped with corn (Pacheco et al, 2008).…”
Section: Resultssupporting
confidence: 93%
“…As a result, Brachiaria decumbens, Rhynchelytrum repens, Digitaria insularis, D. horizontalis and B. brizantha plants exhibited a final population varying from 6,981 and 6,239 specimens, differing statistically from the other species examined, being therefore the most favorable hosts for the nematode parasitism ( Table 2). The P. zea hosting behavior of B. brizantha, as observed in this study, corroborates the results obtained by Sharma et al (2001) and Carvalho (2013), who assessed pasturelands in the states of Acre and Mato Grosso do Sul and found this parasite spread in most of the areas examined. It is worth noting that the species of the genus Brachiaria spp., particularly Brachiaria brizantha, are considered excellent tropical forage plants and have been used as the main species in integrated croplivestock systems in the Brazilian mid-west because of its rusticity, tolerance to the dry winter in the region and the possibility of using it intercropped with corn (Pacheco et al, 2008).…”
Section: Resultssupporting
confidence: 93%
“…It is also likely that this nematode was not found in other sampled areas because of the randomness in the T A B L E 2 Origin, identification and aggressiveness (disease severity) of Fusarium oxysporum f.sp. cubense isolates obtained from banana plantations in some of these areas prior to the cultivation of banana may favour the maintenance and/or increase in the population of this pathogen (Carvalho, Fernandes, Santos, & Macedo, 2013;Dias-Arieira, Ferraz, & Ribeiro, 2009).…”
Section: Discussionmentioning
confidence: 99%
“…Em experimento estabelecido em microparcelas para avaliar o efeito de adição de material orgânico ao solo sobre os danos de P. brachyurus ao milho, Egunjobi e Larinde (1975) B A verificaram correlação positiva (r = 0,66) entre a densidade populacional do nematoide nas raízes e a produtividade, sugerindo que, mesmo em altas populações nas raízes, os danos do nematoide foram limitados pelas ótimas condições de fertilidade obtida pela adição do material orgânico ao solo. Resultados semelhantes foram obtidos com o capim-marandu (B. brizantha) que, mesmo sendo suscetível a P. brachyurus (DIAS-ARIEIRA et al, 2009;INOMOTO et al, 2007), não demostrou danos em função do parasitismo (CARVALHO et al, 2013).…”
Section: Resultsunclassified
“…A reprodução de P. brachyurus em soja, milho, algodão, capim-braquiária e capim-colonião já foi documentada (INOMOTO, 2011;INOMOTO et al, 2007;LINSEY;CAIRNS, 1971;MACHADO et al, 2007). No entanto, sua capacidade de causar danos, como agente primário, ainda é tema de discussão (CARVALHO et al, 2013;MACHADO et al, 2006).…”
Section: Introductionunclassified