Agronomy is like being a farmer's teacher, helping him to grow plants and crops better.
Think of plants like your toys. You have to take good care of your toys to keep them in good condition, because if you don't, they might break or stop working. Plants can be like that too.
Agronomists teach farmers how to make sure their crops have enough water, light, and nutrients to grow strong and healthy, just like how you take care of your toys. They might also show farmers new ways to plant their crops or use machines to harvest them more efficiently.
Just like how you go to school to learn new things, farmers might go to classes or workshops to learn from agronomists how to be better farmers. By working together, agronomists and farmers help make sure we have enough food to eat and plants to enjoy.