Potential of some indigenous filicinophytes of manipur against Plutella xylostella L. Gupta M. K.1,*, Marangmei Longlu1, Sarma A. K.2, Sarmah Rupam3 1Central Agricultural University, Imphal, 795004, Manipur 2Krishi Vigyan Kendra, Dibrugarh, 786010, Assam 3Department of Agronomy, AAU, Jorhat, Assam *Email: mkguptacau@yahoo.co.in
Online published on 23 October, 2018. Abstract Use of plant extracts against crop pests is a traditional in NE India, but evaluation of their efficacy against major crop pests are lacking. In this context, aqueous extract of fresh leaves of eight species of filicinophytic ferns of Manipur were evaluated against diamond back moth (DBM), Plutella xylostella L. in cabbage. Based on the parameters studied viz., leaf consumption, larval mortality, larval-and pupal duration, larval-and pupal growth, pupation success, adult emergence, growth index and degree of protection imparted to cabbage leaves against the attack of DBM larvae, it was observed that aqueous extract of Diplazium esculentum was the most effective. D. esculentum caused highest mortality of DBM larvae with least consumption of leaves leading to maximum protection. This fern species has some other desirable attributes in relation to life parameters of DBM. Top Keywords Filicinophytes, Diplazium esculentum, Plutella xylostella, leaf consumption, larval mortality, life cycle parameters, growth index. Top |