It is estimated that in 2050 the world's human population will reach around 10 billion, and around 800 million people in the world will be hungry and around 653 million people in the world will be undernourished in 2030, thus fulfilling the food demand will remain a huge challenge. The current research progress and disease management strategies are not enough to fulfill the food demand by 2050 [3]. The first green revolution made a huge difference in yield and food production, but in the last few years' crop production has been stagnant and food demand is increasing sharply, so now we need a second green revolution to fulfill the food demand of the population.  
Different approaches are used by farmers to mitigate the impact of plant diseases. The agriculture system mainly relies on chemicals to manage crop diseases and inhibit the growth of phytopathogens, which cause diseases before and after crop harvesting. The excessive use of chemical pesticides, herbicides, and fungicides that are mainly used to control plant diseases causes harmful environmental and human health consequences. [PERSON] et al. [4] observed that the high use of chemical pesticides increases resistance in pathogens and pests, reduces nitrogen fixation, and the bioaccumulation of toxic pesticides occurs.  
An example is the synthetic chemical pesticide DDT, dichlorodiphenyltrichloroethane, which was extensively used in agriculture for controlling plant pathogens and was found to be genotoxic in humans, causing endocrine disorders [5]. Water and soil pollution is also caused by the excessive use and misuse of these chemicals. There is an increasing demand day by day to reduce the use of synthetic chemicals. Consequently, the harmful effects of chemicals on wildlife, the environment, and human health have increased the need for alternative measures in the control of plant pathogens, so that some phytopathologists have focused their research on developing a new alternative that should replace the use of chemicals in controlling plant diseases.  
Nanotechnology has revolutionized agriculture and can control plant diseases, although the field of nanotechnology is still in the nascent stage and needs more research analysis [6].The use of nanomaterials in agriculture will reduce the excessive use of toxic chemicals used for plant disease management (Figures 1 and 2).  
\"Nano\" denotes one-billionth part, thus nanotechnology deals with small things. The word nano is used for materials with a size range of 0.1 to 100 nanometers [7; 8]. The first time the term nanotechnology was used was by [PERSON] in 1974 to the science that largely deals with particles of nano size (1.0 \(\times\) 10\({}^{-9}\) m). When a bulk material is reduced to nano size, it has a high surface-to-volume ratio that may increase its reactivity and express some new properties [7; 9]. The control of plant diseases and improving plant growth by the use of nanomaterials are some of the possible key applications in the area of plant pathology. Approximately 260,000-309,000 metric tons of nanoparticles were produced in 2010 globally, and the worldwide consumption of nanomaterials was approximately from 225,060 metric tons to 585,000 metric tons in 2014 to 2019 [10; 11].  
In this review article, recent research progress and the application of various nanoparticles for the sustainable management of the biotic stress of crop systems and impact on plant growth have been discussed. We try to cover the various problems associated with crop cultivation and plant diseases and the use of different nanomaterials to control phytopathogens and improve plant growth.