Certified Crop Advisor Terms and Guidelines Final cert exam

Certified Crop Advisor Terms and Guidelines Final cert exam Acid Soil: - CORRECT ANSWER-A soil that has a pH value of less than 7.0. Aerobic: - CORRECT ANSWER-A condition identified by the presence of oxygen. Agronomic Nutrient Rate: - CORRECT ANSWER-Agronomic Amount of nutrients required by a crop for an expected yield, after all soil, water, plant, and air credits are considered. Alkaline Soil: - CORRECT ANSWER-A soil that has a pH value greater than 7.0. Ammonium (NH4+): - CORRECT ANSWER-Ammonium A form of nitrogen that is available to plants from fertilizer and organic matter decomposition. Ammonium Nitrate Solution: - CORRECT ANSWER-Water based solution of ammonium nitrate in water usually standardized to 20% nitrogen used for direct application or an ingredient in a multi-nutrient liquid fertilizer. Analysis is 20-0-0. Ammonium Phosphate: - CORRECT ANSWER-A group of phosphorus fertilizers manufactured by the reaction of anhydrous ammonia and super-phosphoric acid to produce either solid or liquid fertilizer. Ammonium Sulfate: - CORRECT ANSWER-A fertilizer with an analysis of 21-0-0 and 24% sulfur. Anaerobic: - CORRECT ANSWER-A condition identified by the absence of oxygen Anhydrous Ammonia (NH3): - CORRECT ANSWER-Nitrogen fertilizer made by compressing air and natural gas under high temperature in the presence of a catalyst. Analysis is 82-0-0. Animal Unit: - CORRECT ANSWER-1000 pounds of live animal weight, a term used to determine volumes of animal manure produced. Anion: - CORRECT ANSWER-An ion that has a negative electrical charge. Common anions include sulfate, and nitrate. Anion Exchange Capacity: - CORRECT ANSWER-The sum total of exchangeable anions that a soil can adsorb. Expressed as centimoles of charge per kilogram (cmolc/kg) of soil or milliequivalents per 100 g of soil (meq/100 g of soil). Application Rate: - CORRECT ANSWER-The weight or volume of a fertilizer, soil amendment, or pesticide applied per unit area. Available Nutrient: - CORRECT ANSWER-The form of a nutrient that the plant is able to use. Many nutrients are in forms the plant cannot u and must be converted to forms available to the plant to be useful. Banded Nutrients: - CORRECT ANSWER-Placing fertilizer nutrients in a band near the seed at planting. Also may include a separate surface or subsurface band application of either solid or liquid materials before or after planting. Base Saturation Percentage: - CORRECT ANSWER-The proportion of the soil's cation exchange capacity occupied by basic cations. Bioremediation: - CORRECT ANSWER-The use of biological agents to reclaim soil and/or water polluted by substances hazardous to human health or the environment. Biosolid: - CORRECT ANSWER-Any organic material, such as livestock manure, compost, sewage sludge or yard wastes applied to the soil to add nutrients or for soil improvement. Buildup and Maintenance: - CORRECT ANSWER-Nutrients applied in order to build up a target soil test level and then maintained by annual addition of the quantity of nutrients expected to be removed in the harvested portion of the crop. Calcite Lime: - CORRECT ANSWER-Limestone consisting of CaCO3 based material with low magnesium levels. Calcium Carbonate Equivalent (CCE): - CORRECT ANSWER-The liming potential of material as compared to CaCO3. Cation: - CORRECT ANSWER-An ion that has a positive electrical charge. Common soil cations are calcium, magnesium, hydrogen, sodium and potassium. Cation Exchange Capacity (CEC): - CORRECT ANSWER-The amount of exchangeable cations that a soil can adsorb at a specific pH, expressed as milliequivalents per 100 gram of soil (meq/100 g soil) or (cmol charge/kg). Cation Exchange Sites: - CORRECT ANSWER-Negatively charged sites on the surfaces of clays and organic matter. Chelated Molecule: - CORRECT ANSWER-A large water-soluble organic molecule that binds with a free metal ion to form a water-soluble complex. Chelation improves the solubility and plant availability of the metal ion