Farm Calculators is the best tool to calculate the exact amount of seeds, fertilizer, and other chemicals you will need to grow your farm. 

If you want to increase your crop yield, you need to understand the role of each element. Each element has a specific role to play in the growth of your plants. For example, you will need to apply fertilizer and pesticides to your plants and crops to grow and maintain them. You will also need to use a seeding tool and a plant growth calendar to get an accurate estimate of the amount of seeds and other chemicals you will need to sow.

You can also use this app to calculate your crops' growth rates, as well as to find out what elements are needed for a particular type of crop.