Occurrence of Aphis craccivora on Clerodendrum indicum-A new record from north-east India

Clerodendrum indicum (L.) Kuntze, a medicinal shrub, is gaining worldwide recognition and importance because of its outstanding property as anti HIV-I agent. Studies on seasonal incidence of A. craccivora Koch, an important polyphagous pest, were carried out on C. indicum under field conditions during 2012–14 at Jorhat, Assam. The peak population was recorded during the month of November 2012 followed by December 2012. Similar trend of occurrence was also observed during 2013–14. Multiple regression modelwas developed for A. craccivora Koch to predict their seasonal incidences under the agro-climatic conditions of Jorhat.