Chapter 2. Concepts and definitions. Pages 15-30. In: Zahirul Islam, David Catling. 2012. Rice Pests of Bangladesh: Their Ecology and Management. University Press Limited, 422 Pages. In: Zahirul Islam, David Catling. 2012. Rice Pests of Bangladesh: Their Ecology and Management. University Press Limited, 422 Pages.

Keywords: basic definitions, yield, production, pest, injury, damage, pesticides, economic threshold level, pest type, status and abundance level, natural enemies, integrated pest management, growth of the rice plant, rice growth stages, pest status in rice, diversity of organisms and pests, types of pest damage, typical examples of damage caused by rice pests and diseases, transformation of rice agroecosystem, insect pests, changing status of rice insect pests in Bangladesh from 1965-2009, abundance, distribution, and yield loss potential of economically important insect pests, major rice pests and diseases according to rice season, vertebrate pests, list of potential insect pests of rice in Bangladesh, list of diseases and weeds