**1. Introduction**

The main job of agronomists is introducing such sophisticated production system through which is made possible the best use of light, heat, water, and soil for the crop production. Haman intervention in production and consumption of food and feed for human and their animals is accountable in climate change, which gives rise to other environmental changes like change in biodiversity, carbon and nitrogen cycling, and fresh water supplies [1, 2]. Change in climate may bring positive effects in some part of the world, particularly above about 55° northern altitudes. Change in climate, will further complex to attain food security in developing countries because of the negative impacts of climate change on crop production especially in subtropical and tropical areas [3–7]. There are three major factors responsible for the climate change and their negative impacts. First, several developing countries are exposed to considerable change in rainfall and temperature; according to the IPCC [8] prediction, the tropical and subtropical areas can experience an increase in temperature of 2–5°C. An intensification in extreme events (droughts and floods) in terms of frequency and intensity is also expected [8, 9]. Second, most of the developing countries' economies are sensitive to the direct deleterious effect of climate change because of the major dependence of developing countries' economies on agriculture and due to the higher poverty level [6]. Third, in developing countries most of the people depend on agriculture directly for their food and livelihood and change in climate will have negative impacts on production of crop and food supply. It is clear that increase in production of crops will need to increase by 50% over next few decades to fulfill the expected demand [10] as the world population is expected to increase from 6 billion to 9 billion by 2050 [11]. The current demands of the people from the existing current production technology and cropping system may further raise environmental complexities [12, 13]; for example, increase in chemical fertilizers can increase GHG emission, which in turn can cause climate which is sometimes also called climate forcing and such changes can cause further decline in crop production. Agronomist have two major challenges. First is the production of food on sustainable basis with the changing climate along with reduction in climate forcing factors and secondly, efforts to more efficiently collaborate with other disciplines to enhance the supply of agronomic products both better integrated within the overall context of food security and better tuned to the needs of food security policy formulation.
