Unit 2 DDT Case Study

Question 1

DDT Elm Tree case study?

Answer 1

Elm trees were sprayed for Dutch Elm Disease to try and kill the beetle vector. The DDT covered the leaves and when they fell earthworms ingested DDT and bioaccumalated it and robins ate enough worms for a lethal dose

Question 2

When did pesticide use increase the most?

Answer 2

1960–1970s

Question 3

Which crops require the most pesticide use?

Answer 3

Corn and Soybeans