Yearly nematode population variation in Stargrass, Tannergrass, Smutgrass and Setariagrass in Alajuela, Costa Rica

Yearly nematode population variation in Stargrass, Tannergrass, Smutgrass and Setariagrass in Alajuela, Costa Rica

Authors

  • Rodolfo WingChing-Jones Escuela de Zootecnia. Centro de Investigación en Nutrición Animal, Universidad de Costa Rica, San José, Costa Rica
  • Luis Salazar Figueroa Escuela de Agronomía, Laboratorio de Nematología. Centro de Investigación en Protección de Cultivos, Universidad de Costa Rica, San José, Costa Rica

DOI:

https://doi.org/10.22458/urj.v7i1.861

Keywords:

Plant parasites, dairy farm, forages, population density, grazing. RESUMEN, Las poblaciones de nemátodos pueden afectar la productividad en potreros de ganado. Cada 30 días durante los meses de enero 2004 y enero 2005 medimos las poblaciones de nematodos

Abstract

Nematode populations can affect productivity in cattle grasslands.Every 30 days from January 2004 to January 2005 we measured nematode
populations in grass rhizospheres in northeastern Costa Rica.The substrate, sampling moment, and their interaction, were significant factors in the populations (p<0,05). We found Pratylenchus sp.,
Helicotylenchus sp., Tylenchus sp. and non-parasitic nematodes (1,02;2,36, 1,28 y 3,87 log10 N° nematodes per 100g of roots respectively)
in Stargrass throughout the year. Criconemella sp., Hemicycliophorasp., Ditylenchus sp. and Xiphinema sp. were occasionally identified. In Smutgrass, Meloidogyne sp., Pratylenchus sp., Paratylenchus sp and non-parasitic nematodes were identified (2,56; 2,51; 3,47 y 3,53 log10 N° nematodes per 100g of roots respectively).The size of plant-arasitic nematode populations in the roots was surprisingly high. We also found Pratylenchus sp., Helicotylenchus sp. and non-parasitic nematodes in Setariagrass roots, with densities of 2,92, 2,02 and 3,57 log10 N° nematodes per 100g respectively. Finally, in Tannergrass, Pratylenchus sp., Helicotylenchus sp. and non-parasitic nematodes were present (3,99; 1,47 and 3,79 log10 N°. nematodes roots 100g respectively).

Published

2015-06-05

How to Cite

WingChing-Jones, R., & Salazar Figueroa, L. (2015). Yearly nematode population variation in Stargrass, Tannergrass, Smutgrass and Setariagrass in Alajuela, Costa Rica. UNED Research Journal, 7(1), 49–57. https://doi.org/10.22458/urj.v7i1.861

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