Home
Search
Create
Library
Topics
Student
Teacher
Admin
Map
Sign in for more features
YourStory
Home
Search
Create
Library
Topics
Student
Teacher
Sign in
Feedback
Contact Us!
Assessment
What is the primary source of nitrogen for plants in agricultural soils?
Atmospheric nitrogen
Soil organic matter
Fertilizers
Microbial activity
Which nutrient is most commonly associated with plant growth and development?
Phosphorus
Iron
Copper
Zinc
Which practice can help improve nutrient retention in agricultural soils?
Frequent tilling
Cover cropping
Mono-cropping
Chemical pesticide overuse
Submit