Agricultral Activites Flashcards
What is a fertilizer
A substance that enriches the soil so plants grow better
What are the three main symbols for fertilizer
N (nitrogen), P (phosphorus), K (potassium). And the fourth less used is S (sulfur)
What does nitrogen do for the soil
Green and tissue building
What does phosphorus do for the soil
Transfer energy, root development, and flowering
What does potassium do for the soil
Metabolism, water, and root development
Too much fertilizer can do what
Damage the crops and damage the ecosystem
What is a pest
Is an organism that harms people, crops, or structure
Pesticides are chemicals used to kill what
Pests
Herbicides are chemicals used to kill what
Kill or control weeds
Who can pesticides be harmful to
People and other non-pest organisms
Non-selective is what
Kill both pest and non-pest
Pests can become resistant to what
Pesticides
