Sunflower being a new oilseed crop to TamilNadu attempts were made to study the effect of fertilisers on the incidence of the two major pests viz.the leaf caterpillar,Spodoptera litura F.and the capitulum borer. -Hellothis armigera Hb.which damage it in winter (Ranganathan et al.1973).The results of the experiment -conducted at the Regional Agricultural Research Station.Kovilpatti during 1973-74 are presented here.
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