Impact of entomopathogenic nematode applications on diamond back moth population

Revista de Protecci贸n Vegetal

Enrique, Roberto²  Gómez, Lucila²  Miranda, Ileana²  Rodríguez, Mayra G²  González, Esteban²  Rosales, Ligia Carolina¹  Díaz-Viruliche, Luisa³  Hernández, Alexei³  Hernández-Ochandía, Dainé² 

[1] Instituto Nacional de Investigaciones Agrícolas, Maracay, Venezuela;Centro Nacional de Sanidad Agropecuaria (CENSA), Mayabeque, Cuba;Universidad Agraria de La Habana, Mayabeque, Cuba

关键词: Heterorhabditis bacteriophora;    Plutella xylostella;    Brassica oleracea;   

DOI  :  

学科分类：农业科学（综合）

来源: Centro Nacional de Sanidad Agropecuaria

【 摘 要 】

The aim of this work was to determine the impact of entomopathogenic nematode (EPN) applications on diamond-back moth (DBM) populations and cabbage (Brassica oleraceaL.) yields in a farm of the western region of Cuba. The experiment was carried out in «Doña Amalia» Farm in the western Province of Mayabeque (Cuba). Two treatments were used: EPN (Heterorhabditis bacteriophora Pionar strain HC1) and chemical control (Clorpirifos (0,48-0,72kg ai.ha-1), both applied weekly. Each week, the DBM larvae population was evaluated. At the final of the crop, ten plants were randomly harvested from each experimental plot and the head fresh weight determined; the final yields (in t.ha-1) were calculated by the farmers. The infestation Index (referred as the mean numbers of DBM larvae for two different treatments: EPN and Chemical) over time showed statistic differences, with a low population in the biological treatment, from 0,4 larvae.plant-1 at the beginning of the experiment to 0,1 larvae.plant-1 at the end, meanwhile, in the chemical treatment, the population increased up to 0,88 larvae.plant-1, with a very high damaged crop. The head fresh weight was statistically higher in the biological treatment than in the chemical one. The total volume of production in both experimental block were 7,02t in the EPN treatment and 6,7t in the chemical block, which corresponded to 26t.ha-1 and 16,75t.ha-1, respectively. The results confirmed the potentialities of EPN in DBM management in Cuba.

【 授权许可】

CC BY-NC