Extraction and Isolation of Nematodes Associated with Carrots Obtained from Zaria Local Government

Abstract

Plant-parasitic nematode s are an important constraint to yield and quality of carrot worldwide. Several species of nematodes are well known to reduce carrot yield and cause poor quality taproots. Soil and root samples were examined from dakaci and bizara carrot fields and plant-parasitic nematodes were detected in both fields. The nematodes in the carrot and the soil samples were extracted using the Baerman’s Pan Method. Pratylenchus spp. and Meloidogyne spp., were observed to be the most common plant-parasitic nematodes observed from the carrot fields isolated from the two fields in the survey. Other genera detected in the carrot fields were Hoplolaimus spp., Trichodrus spp., Xiphinema spp., Belonolaimus spp., Longidorus spp., Ditylenchus spp., Aphelenchoides spp., Radopholus spp., Anguina spp., Paratrichodorus spp., and Helicotylenchus spp. The carrot sample from the Bizara field has the highest number of nematodes detected while the soil sample from Dakaci carrot field has the lowest number of nematodes detected. These plant-parasitic nematodes were detected in very low numbers in both carrot fields, and were unlikely to be limited carrot production in the fields.