Ground cover presence in organic olive orchards affects the interaction of natural enemies against Prays oleae, promoting an effective egg predation

  title={Ground cover presence in organic olive orchards affects the interaction of natural enemies against Prays oleae, promoting an effective egg predation},
  author={Hugo Alejandro {\'A}lvarez and Raquel Jim{\'e}nez-Mu{\~n}oz and Marina Morente and Mercedes Campos and Francisca Ruano},
  journal={Agriculture, Ecosystems \& Environment},
Abstract The olive moth, Prays oleae, is one of the most common insects that damages olives in the Mediterranean region. The establishment of ground cover within olive orchards has been promoted in this region in recent years to avoid erosion and soil degradation. Nevertheless, its role as a shelter for natural enemies of pests has been controversial. In this study, we have investigated the effectiveness of the biological control of P. oleae in organic olive orchards with ground cover (mowed… Expand

Figures and Tables from this paper

Structure of canopy and ground-dwelling arthropod communities in olive orchards is determined by the type of soil cover
Qualitative values were more diverse in agroecosystems with spontaneous plant cover in which there were more sources of food and the complexity of plausible trophic links was greater in olive groves with spontaneous plants despite the similar values for family richness in the three-olive grove soil management regimes. Expand


Semi-natural habitat complexity affects abundance and movement of natural enemies in organic olive orchards
Overall, the density of the natural enemies in organic olive orchards is better enhanced by complex stands of ground cover and natural adjacent vegetation, which gives support to the complex-habitat hypothesis. Expand
Effect of non-crop vegetation types on conservation biological control of pests in olive groves
This study investigated the effects of four forms of non-crop vegetation on the abundance of two important pests: the olive psyllid and the olive moth and identified examples of the right types of diversity for use in conservation biological control in olive production systems. Expand
Ground cover management affects parasitism of Prays oleae (Bernard)
The management of ground covers seemed to influence the overall rate of P. oleae parasitism in some years, but longer-term experiments are needed to clarify this trend. Expand
Habitat complexity in organic olive orchards modulates the abundance of natural enemies but not the attraction to plant species
It is found that the higher the plant richness and structure of a semi natural-habitat within an olive orchard, the high the abundance and richness of a given arthropod community (a pattern found in natural ecosystems). Expand
The effect of different ant species on the olive moth, Prays oleae (Bern.), in Spanish olive orchard
Predation studies using enzyme‐linked immunosorbent assay (ELISA) showed that the maximum number of ants found to be test positive for olive moth, Prays oleae remains coincided with the moth's most vulnerable period, which warrants further research into their possible role against the olive moth. Expand
The effect of resident vegetation cover on abundance and diversity of green lacewings (Neuroptera: Chrysopidae) on olive trees
The fact that VC promoted higher abundance detected earlier through trapping, and later on olive canopies through suction, coinciding with P. oleae presence, suggests that resident VC may contribute to a build-up of green lacewing populations moving onto the crop at the time of the pest attack. Expand
Short term response of ants to the removal of ground cover in organic olive orchards
Overall, ant biodiversity did not change, however, changes were observed in the abundance of ant species, in particular, in those species that build shallow nests in the soil, both between the rows of trees and under the canopy of olive trees. Expand
Is Ground Cover Vegetation an Effective Biological Control Enhancement Strategy against Olive Pests?
There were small and inconsistent effects of ground cover on the abundance of pests whilst local, landscape and regional variability explained a large proportion of the variability in pest response variables, highlighting the importance of local and landscape-related variables in biological control. Expand
Natural enemies associated with cereal cover crops in olive groves.
Cereal cover crops significantly increased the abundance of parasitoids in the olive canopy, especially Ageniaspis fuscicollis Dalman (Hymenoptera Encyrtidae) a parasitoid of the olive moth Prays oleae Bernard (Lepidoptera Yponomeutidae), the most common insect pest of olive trees. Expand
Synergistic effects of ground cover and adjacent vegetation on natural enemies of olive insect pests
Maximum likelihood methods are used to analyse the synergistic effects of ground cover and different types of adjacent vegetation on the abundance of the main natural enemy groups of insect pests in olive groves and encourage olive farmers to use both habitat management approaches simultaneously. Expand