Tomato is an important vegetable grown all over the world because of its dietary, nutritional and medicinal values. It is damaged by a variety of insect pests especially tomato aphids and tomato fruif borer which are considered as limiting factor in the production of this vegetable. The work presented in the book was focused on the seasonal occurrence of aphid and tomato fruit borer on different cultivar of tomato and to find out the host plant resistance in relation to abiotic factors such as maximum temperature, minimum temperature, relative humidity and rainfall on different cultivars of tomato viz., Raja, Nagra-1077, Red hero hybrid and Rao phego against tomato aphids and tomato fruit borer.