Abstract

Climate is a major component of the environmental complex. In general, climate, as understood by the early Greek scientists, includes the general condition of the atmosphere such as temperature, rainfall, humidity, wind and other variables. The agroecosystem in the present study includes the following parameters: 1. Air temperature in°C, relative humidity in percentage and vapour pressure in mm of mercury at the ground surface and at different heights (5, 15, 30, 60 and 100 cm), 2. Soil temperature in°C at ground surface and at different depths (5, 15 and 30 cm) and 3. Net radiation in g.cal/cm2/min. These agro-climatic parameters were recorded on various stages viz., vegetative growth stages, flowering stage (i. e. at 50% flowering) and capsule stage (i. e. at 50% capsule formation by visual rating) at different times of that day i. e. 8.00, 14.00 and 18.00 h in the year 2016 at research site which was located in crop field of sesame at village Ridmalsar lying 20 km in north-east to the city Bikaner, Rajasthan, India. It can be concluded from present study that air temperature in profile, relative humidity distribution and also vapour pressure in the microclimatic zone (sesame agro-ecosystem) of the atmosphere varies with changes in the time of day (morning, noon and afternoon), change in height of profile (5, 15, 30, 60 and 100 cm) and stages of crop. The net radiation values also show increase from morning to noon in all the different stages of growth.