Change in abundance and damage potential of S. litura in soybean growing areas of India based on activity index (AI).

Current climatic conditions (a), Future climatic conditions (b), and Absolute change in AI (c). An index value of 1 represents 10-fold potential population increase within a year. e.g.: An AI value of 4.0 represents 10⁴i.e. 10,000 times potential population increase within a year.