How does the phosphorus content of cultivated soils in the eastern United States or northern Europe compare with that of nearby forest soils that have never been cleared? What is the reason for this difference?
What is the effect of soil pH on the availability of phosphorus, molybdenum, and iron, and what are the unavailable forms at the different pH levels?
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here