Nematode control in ginger with nematicides, selection of planting material and sawdust mulch

Abstract

Severe root-knot developed in late-harvest ginger when rhizomes showing no external symptoms of infestation were planted in soil fumigated with ethylene dibromide at 50 litres/ha. Doubling the rate of ethylene dibromide improved control but was of no value when the planting material was heavily infested. Under these conditions, spraying the soil with 'Nemacur' (ethyl 4-(methylthio) m-tolyl isopropylphosphoramidate) at 4·9 kg a.i./ha immediately after fumigation with ethylene dibromide at 50 litres/ha gave good results.