115013
He pioneered crop dusting to eradicate the boll weevil , which destroyed cotton throughout the Mississippi River delta country in the early 20th century .
 boll weevil, Mississippi River
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 boll weevil, Mississippi River