Why was it necessary for farming to become more efficient?

More efficiency means greater volume of primary product produced, or more food produced per square foot or acre with less resources going into this food production. In other Words, farming efficiency is reducing inputs while working to increase output. Inefficiencies occur when a lot of inputs go into get a small amount of output or raw product that will go into some form of food production. Large inputs can refer to fuel, fertilizer, feed, pesticides, labour and time.