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Maize is widely grown in the tropical regions of the world and ranked third after wheat and rice. In Pakistan, province of Khyber Pakhtunkhwa is one of the leading maize producing region however the production in this region is very low due to many reasons.  One of the dynamic reason for low yield in KP is lack of modern cultural practices. The developed countries attain many fold grain yield of maize as compared to developing countries, like Pakistan. The main reason for low yield in developing countries might be absence of modern production technology, with unavailability of quality seed and misfield management. The main aim of this review article to identify the low yield causes and how to overcome on the yield gap between developed and developing countries. To overcome on yield gap and to increase food security, the only way might be the true type seed sowing having vigorous germination and growth characters with high viability along modern production technology. The area under maize here is over one million hectare and production 3.5 million metric tons. All district and province wise statistical calculation is presented in the text body of the review. Maize has a variety of uses. Its grain is a rich source of starch, vitamins, proteins and minerals.