Certified Crop Advisor Exam with AGraded solutions

Certified Crop Advisor Exam with AGraded solutions What is not an essential nutrient for plants? - CORRECT ANSWER-Na/sodium Which of the following plant nutrients is a cation in soils? - CORRECT ANSWERpotassium/K+ Which of the following is a macronutrient? Cu, S, Mg, B - CORRECT ANSWER-Sulfur Which element regulates stomatal openings in plants? - CORRECT ANSWERPotassium, K Which nutrient is most immobile in soil? - CORRECT ANSWER-phosphate What is the chemical uptake form of nitrogen? - CORRECT ANSWER-NO3- What is the chemical uptake form of phosphorous? - CORRECT ANSWER-H2PO4- What is the chemical uptake form of potassium? - CORRECT ANSWER-k+ At which growth stage are nutrients in the greatest demand? - CORRECT ANSWERvegatative Which of the following in a micronutrient? Cu, Ca, Mg, S - CORRECT ANSWER-Cu, Copper At which growth stage would you expect the highest demand for soil nutrients? - CORRECT ANSWER-mid-veg What is the least available source of nutrients? - CORRECT ANSWER-soil minerals If a nutrient is released into the soil during decomposition of an organic material what has occurred? - CORRECT ANSWER-mineralization When a plant nutrient is absorbed with water that is moving to and into the plant root, the nutrient uptake process is called ________. - CORRECT ANSWER-mass flow A major way calcium is supplied to plants is by _________. - CORRECT ANSWERcation exchange Which of the following is more mobile in a flooded soil than in an upland soil? - CORRECT ANSWER-manganese