Certified Crop Advisor Exam with AGraded solut

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 Which of the following structures would likely have the lowest soil fertility? - CORRECT ANSWER-sand Which of the following nutrient uptake mechanism is most important after a rainfall event? - CORRECT ANSWER-mass flow Which of the following is not needed for rapid nitrification to occur? - CORRECT ANSWER-nitrate Conditions which favor volatile losses of nitrogen? - CORRECT ANSWER-high temperature Denitrification is the conversion of ___________ gaseous forms like denitrogen and oxides of nitrogen? - CORRECT ANSWER-nitrate Symbiotic nitrogen fixation is the process where atmospheric nitrogen is converted to ammonia in the root nodules of? - CORRECT ANSWER-legumes A condition which favors symbiotic nitrogen fixation is? - CORRECT ANSWER-low soil nitrate Immobilization of inorganic N during decomposition will be most likely if the material decomposing has a C:N ratio of...? - CORRECT ANSWER-35 In which of the following cases would you expect the greatest nitrogen mineralization? - CORRECT ANSWER-amended with bio-solid Which of the following forms of K is most available to plants? - CORRECT ANSWERsolution Which of the following situations would you most likely expect potassium deficiency? - CORRECT ANSWER-20% clay, pH 8.3, double cropped split application of nitrogen compared to one pass of the same rate provide what advantage? - CORRECT ANSWER-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. - CORRECT ANSWER-reduced The keys to reducing the amounts of fertilizer nitrogen entering ground and surface waters are to _______ crop uptake and to _____ loss pathways such as leaching and runoff. - CORRECT ANSWER-maximize, minimi