IMPACT OF WEEDS ON HUMAN AFFAIRS

Question 1

IMPACT OF WEEDS ON HUMAN AFFAIRS

Answer 1

1. yield loss due to competition
2. additional cost due to crop protection
3. additional cost due to labor spent on controlling weeds
4. impair human and animal health
5. harbor pathogens (alternate host)
6. interfere water resource management, traffic, and navigation
7. poisonous to livestock

Question 2

HARMFUL EFFECTS OF WEEDS

Answer 2

1. depreciate land value
2. decrease aesthetic value
3. compete with crops for insect pollinators

Question 3

BENEFITS FROM WEEDS

Answer 3

1. food and medicine
2. prevent soil erosion
3. organic matter to soil
4. food for livestock and animals
5. nectar for bees
6. provide habitat for insect predators
7. source of beauty (landscape)
8. source of genetic materials
9. use in bioremediation as biofilter

Question 4

WEEDS AS FOOD SOURCE

Answer 4

1. high amounts of vitamins and minerals

Question 5

WEEDS AS FEED SOURCE

Answer 5

1. high nutritive value compared to feedstuff
2. produce tons of biomass

Question 6

WEEDS INTERFERING WATER RESOURCE MANAGEMENT

Answer 6

1. increase transpiration of water, making it unavailable for crop uptake
2. decreases available oxygen for growth of other organisms