Free-air carbon di-oxide enrichment (FACE) helps to study increase carbon di-oxide on plants and ecosystems grown insitu under controlled conditions without enclosure. Study was conducted on plots prepared on agricultural land of Plant Pathology Department of Dr. P D K V’S College of Agriculture, Nagpur at GPS location 21.132238, 79.070187. Plots were sown with seeds in 10 rows of ten seeds each with a distance of 10-15cm from each other. In one plot only one type of seeds were sown. Experiment was carried out in 2017, 2018 and 2019 with sowing completed in first week of July. Simultaneously same process was followed in controlled Open Top carbon di-oxide Chambers. The soybean crop seeds are the cash crops of Vidarbha region. The above results were analyzed for vegetative growth and diseases. However, significant (P<0.05) negative relationship between temperature was observed with crops like, Other pulses (r2= -.957, P<0.05), Groundnut kharif (r2= -.843, P<0.0), Wheat (r2= -.688, P<0.05) and Rabi Jowar (r2= -.581, P<0.05). Thus, it may be concluded from the study results that the raising temperature has an adverse impact on the crop productivity. Furthermore, it is also evident that further studies involving more parameters should be carried out to understand in depth causality of the decline in crop productivity.