Biological Control of Phytophthora Foot-Rot of Betelvine (Piper betle Linn.)

A multi-location field trials on biological control of Phytophthora foot rot was carried out with Trichoderma viride at three different centres of All India Co-ordinated Research Project on betelvine during 1992-93 to 1997-98. Bordeaux mixture was used to compare the treahnents in preventing the intensity of foot rot. These trials revealed that four soil applications of Trichoderma applied through oil cake at quarterly interval significantly reduced the disease intensity and also increased the leaf yield. However, it was less effective than Bordeaux mixture except at Jorhat centre where both the treatments were on par.