How do farmers Maximise yield?

As a keen observer of the agricultural sector, I am often intrigued by the strategies farmers employ to enhance their yield. Can you elaborate on the various methods they adopt to maximise their harvests? Do they focus on optimising soil conditions, selecting high-yielding crop varieties, or implementing innovative irrigation systems? Furthermore, how do they manage pests and diseases to ensure minimal crop loss? Lastly, what role does modern technology, such as precision farming and smart irrigation, play in boosting yields and sustainability? I'm eager to understand the comprehensive approach farmers take to achieve maximum yield.