Dynamics of growth parameter and yield of kalmegh (Andrographis paniculata) under different weed control technique

Abstract

Medicinal plants play a significant role in the life of people and are present in innumerable forms. Medicinal and Aromatic plants contribute significantly to our economy and health security of the country. Kalmegh is an important medicinal plant that has been effectively used in traditional Asian medicines. A field experiment was conducted during kharif season of 2015 at G.B. Pant University of Agriculture and Technology, Pantnagar (Uttarakhand). Result reviled that maximum leaf area index, crop growth rate and relative growth rate were recorded in weed free treatment followed by T8 (Three hand weeding) treatment at all stages of crop growth. The highest dry and fresh herbage yield was also recorded in weed free treatment followed by T8 (Three hand weeding) treatment.