The soil nutrient which is important as a constituent of plant proteins and hormones is? by Sunday | Jul 7 | Agricultural Science WAEC | 0 comments A. calcium B. magnesium C. iron D. potassium E. sulphur Correct Answer: Option E – sulphur Users Also Read These:Which of the following is a soil micro-nutrient?The most common soil mineral found in all…STB 327 Theory Questions: Causes of Nutrient…Which of the following statements is correct of…The most important soil micro-organism causing decay…