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Title: | Nematóides associados ao declínio do capim Brachiaria brizantha cv. Marandu no estado do Acre, Brasil. |
Authors: | SHARMA, R. D.![]() ![]() CAVALCANTE, M. de J. B. ![]() ![]() VALENTIM, J. F. ![]() ![]() |
Affiliation: | RAVI DATT SHARMA, CPAC MARIA DE JESUS BARBOSA CAVALCANTE, DPD JUDSON FERREIRA VALENTIM, CPAF-Acre. |
Date Issued: | 2000 |
Citation: | In: INTERNATIONAL SYMPOSIUM SOIL FUNCTIONING UNDER PASTURES IN INTERTROPICAL AREAS, 2000, Brasília, DF. Extended abstracts. Planaltina, DF: Embrapa Cerrados, 2000. |
Pages: | p. 83-86. |
Description: | Seis espécies de fitonematóides foram identificadas nas seguintes freqüências de ocorrência nas57 amostras coletadas de sete localidades no estado do Acre dos quais 15 das touceiras doentes; 20 decada em declínio e sadias: Aphelenchoides sp. (100%), Ditylenchus sp. (95%), Pratylenchus zeae (63%),Helicotylenchus dihystera (21%), Meloidogyne sp. (7%) e Criconemella sp. (3,5%). Em geral, asdensidades populacionais de fitonematóides foram muito baixas em todas as amostras. Duas espécies denematóides micófagos e sua freqüências de ocorrências nas amostras foram: Aphelenchus avenae (100%)e Tylenchus sp. (100%) além de nematóides de vida livre (100%). Six species of plant parasitic nematodes in their frequencies of ocurrence (Aphelenchoides sp. (100%),Ditylenchus sp. (100%), Pratylenchus zeae (63%), Helicotylenchus dihystera (21%), Criconemella sp.(3.5%), and Meloidogyne sp. (7%), were encountered in 57 samples collected from seven sites in the Stateof Acre, of which 15 from dead; 20 each from declining and healthy Brachiaria brizantha cv. Marandugrass stumps and 2 samples from Panicum maximum and Pueraria phaseoloides. In general, thepopulation densities of nematodes in samples were extremely low in all the samples. Two species ofmycophagous nematodes (Aphelenchus avenae (100%) and Tylenchus sp. (100%), besides free-livingnematodes were also found in these samples. |
Thesagro: | Gramínea Forrageira Parasito de Planta Nematóide Helminto |
NAL Thesaurus: | Forage grasses Urochloa brizantha Plant parasitic nematodes Helminths |
Keywords: | Brachiaria brizantha cv Marandu Acre Western Amazon Amazônia Ocidental Amazonia Occidental |
Type of Material: | Artigo em anais e proceedings |
Access: | openAccess |
Appears in Collections: | Artigo em anais de congresso (CPAF-AC)![]() ![]() |