What did the farming teacher do with leftover fertilizer?

(Read the text and answer the question)

The farming teacher asked the children to take spades and hoes from the car.

The farming teacher explained about weeds that weeds are hardy, can grow faster than crops, hide the sun from corps, provide hiding places for bad insects and take nourishment from the soil.

The teacher showed the children how to hoe, make furrows, spread fertilizer and grow crops by demonstrating while explaining.

During the lesson, a little snake nearly bit Ta-chan's hand but the teacher reassured him that the snakes in the field were not poisonous.

The farming teacher taught the children about insects, birds, butterflies, the weather and other related topics, sharing his experiences.

After planting, the field was almost impeccable except for a few uneven furrows, showing the children's hard work.