Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract Full Text

Eco-friendly management of phytonematode by aqueous extract of some agricultural weeds for sustainable agricultural production.

Abstract

Chemical control of plant-parasitic nematodes, essentially, involves the use of synthetic nematicides. However, apart from its very high cost, increased concern for the environment has necessitated a reduction in the amount of nematicide used for nematode control. Additionally, there has been an increase in the intensity of search for other efficient, ecologically sound and safe control methods. Meloidogyne incognita. (Kofoid and White) Chitwood, eggs were exposed to concentrations of leaf extracts of agricultural weeds such as Parthenium hysterophorus, Nicotiana plumbaginifolia, Avena fatua, Chenopodium album, Amaranthus retroflexus, Chenopodium murale, Amaranathus spinosus, Oxalis corniculata. One hundred percent concentration of root extracts of P. hysterophorus, N. plumbaginifolia exhibited 100% inhibition of egg hatch and larval mortality. While 100% concentration of root extracts of A. fatua, C. album exhibited 97.83 and 96.52% inhibition of egg hatch and 95% larval mortality in both plants at 48 hour. Other plants also exhibited the nematicidal properties. Egg inhibition and larval mortality decreased with an increase in the dilution of all the extracts. Similarly with an increase in exposure time, juvenile mortality was also increased.