Certified Crop Advisor Exam Questions With 100% Correct Answers

Certified Crop Advisor Exam Questions With 100% Correct Answers What is not an essential nutrient for plants? Na/sodium Which of the following plant nutrients is a cation in soils? potassium/K+ Which of the following is a macronutrient? Cu, S, Mg, B Sulfur Which element regulates stomatal openings in plants? Potassium, K Which nutrient is most immobile in soil? phosphate What is the chemical uptake form of nitrogen? NO3- What is the chemical uptake form of phosphorous? H2PO4- What is the chemical uptake form of potassium? k+ At which growth stage are nutrients in the greatest demand? vegatative Which of the following in a micronutrient? Cu, Ca, Mg, S Cu, Copper At which growth stage would you expect the highest demand for soil nutrients? mid-veg What is the least available source of nutrients? soil minerals If a nutrient is released into the soil during decomposition of an organic material what has occurred? mineralization When a plant nutrient is absorbed with water that is moving to and into the plant root, the nutrient uptake process is called ________. mass flow A major way calcium is supplied to plants is by _________. cation exchange Which of the following is more mobile in a flooded soil than in an upland soil? manganese Which of the following structures would likely have the lowest soil fertility? sand Which of the following nutrient uptake mechanism is most important after a rainfall event? mass flow Which of the following is not needed for rapid nitrification to occur? nitrate Conditions which favor volatile losses of nitrogen? high temperature Denitrification is the conversion of ___________ gaseous forms like denitrogen and oxides of nitrogen? nitrate Symbiotic nitrogen fixation is the process where atmospheric nitrogen is converted to ammonia in the root nodules of? legumes A condition which favors symbiotic nitrogen fixation is? low soil nitrate Immobilization of inorganic N during decomposition will be most likely if the material decomposing has a C:N ratio of...? 35 In which of the following cases would you expect the greatest nitrogen mineralization? amended with bio-solid Which of the following forms of K is most available to plants? solution Which of the following situations would you most likely expect potassium deficiency? 20% clay, pH 8.3, double cropped split application of nitrogen compared to one pass of the same rate provide what advantage? reduce leaching loss If a legume is grown in rotation with a grain crop, the nitrogen fertilizer rate for the grain crop will be ___________ as compared to a monoculture of the grain crop. reduced The keys to reducing the amounts of fertili