Explanation:

Tomato is a warm season crop. The best fruit colour and quality is obtained at a temperature range of 21-24o C. Temperatures above 32o C adversely affects the fruit set and development. The plants cannot withstand frost and high humidity. It requires a low to medium rainfall. Bright sunshine at the time of fruit set helps to develop dark red coloured fruits. Temperature below 10 C adversely affects plant tissues thereby slowing down physiological activities.