Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Cultural practices affect attacks of two pests of tomato in the Niayes in Senegal.

Abstract

Tomato crops are attacked by several insect pests including Helicoverpa armigera and Tuta absoluta. In order to assess the effect of crop management on these major pests in the Niayes (Senegal), a sample of 98 plots was monitored over four crop cycles in the dry season, from 2012 to 2014. Cultural practices were collected by farmer interviews. Results showed that incidence of H. armigera and T. absoluta is negatively correlated with distance to the sea. Plant stand in plots and duration of plants in nursery were negatively correlated to infestation of H. armigera and T. absoluta. The number of insecticide applications was negatively correlated to the infestation of T. absoluta. The type of soil preparation influenced infestations of T. absoluta. Damage caused by H. armigera varied depending on the type of irrigation. Other practices had no effect on infestations of T. absoluta and H. armigera. This study provides information on the relationships between crop management and insect pests of tomato and can strengthen sustainable pest management strategies.