Fertilizers are essential for crops in order to provide humans with food. Fertilizers provide plants with the nutrients potassium, phosphorus, and nitrogen, allowing them to grow more quickly and generate more food. Every living thing on Earth needs nutrients to develop, and nitrogen, in particular, is crucial. Almost 78% of the inhaled air comprises nitrogen, which is present all around us. By 2050, there will be 9 billion individuals due to population growth. We must produce 60 percent more food on the same land by then. Wherever people reside, there must be sufficient wholesome food accessible at reasonable costs at all times to attain food security. Food production and farm performance must be raised, especially in areas with excellent food insecurity. Furthermore, we must do so effectively to ensure future generations' access to food. Using fertilizers is vital for achieving food production, as they are the source of 50% of the food consumed today. Any product or material administered to the soil to encourage plant development is called a fertilizer. There are many different types of fertilizers, most of which include potash, phosphorus, and nitrogen. In reality, the package of fertilizer bought in supermarkets lists the N-P-K ratio. Fertilizers are used worldwide to maintain lush lawns and increase crop yields in agricultural areas. In this paper, we study the fertilizer requirements for different crops. We consider fuzzy triangular numbers and supply and demand as fuzzy quantities. We use Vogel's Approximation Method (VAM) to obtain the optimal solution. Additionally, we compare the solution obtained in VAM with five other methods: the Least Cost Method, Row Minima Method, Column Minima Method, Russell's Approximation Method, and Heuristic 1 Method.