Stats: Nutrient Management

General Stats

This quiz has been taken 17 times
6 since last reset
The average score is 14 of 20

Answer Stats

Question	Answer	% Correct
How many lbs of 10-20-10 should be applied to an acre if the fertilizer recommendation is 26 lbs of P?	100	100%
If a manure contains 0.2% total P and 50% of the P contributes to soil test P, how much would soil test P increase if 5 ton/acre of the manure is applied to a soil?	10 lb/acre	100%
If the ECCE of a liming material is 65 and the lime recommendation for a state is based on a material with an ECCE of 80, how should lime rate be adjusted for the material with an ECCE of 65?	1.2 times recommendation	100%
Nutrient budgets consider ____	All of the above	100%
Which of the following P sources is a liquid?	Ammonium polyphosphate	100%
Which of the following times of nutrient application is likely to use the least tractor time?	At planting/preemergence	100%
_____ application of P usually results in the most available P	Banded	100%
ECCE is the product of Effectiveness and ______ _	Calcium carbonate equivalence	100%
Which of the following nutrients is a micronutrient?	Cu	100%
Cropping systems that substantially increase or decrease soil pH from pH 6.5 can ___ P availability.	Decrease	100%
The final step in a nutrient management plan is ____.	Evaluation and adjustment	100%
Chelates are commonly used to increase the availability of _____.	Fe	100%
Soil sampling in a non-uniform field should be by the ____ method.	Grid	100%
Which of the following is an uptake form of phosphorus?	H2PO4-	100%
As soil pH decreases, _____ increases	Hydrogen ion concentration	100%
Which of the following is not part of the purpose of a nutrient management plan?	Improve atmospheric conditions	100%
Which of the following is the best way to maximize plant available Nin manure?	Incorporation	100%
Which of the following regulates stomatal openings in plants?	K	100%
A condition which favors symbiotic nitrogen fixation is ______	Low soil nitrate	100%
At which of the following plant growth stages would you expect the highest demand for soil nutrients?	Mid vegetative	100%
If a nutrient is released to the soil during decomposition of an organic material, _____ has occurred.	Mineralization	100%
The chlorophyll meter determines ___ sufficiency in a crop.	N	100%
Denitrification is the conversion of ______ to gaseous forms like dinitrogen and oxides of nitrogen.	Nitrate	100%
Which of the following soils would have the highest lime requirement to meet a target pH of 6.5?	pH 5, 25% clay, 2% OM	100%
Which of the following is commonly used to P loss assessments at the field scale?	P index	100%
How are soil surveys useful in a soil sampling plan? They _____ _	Provide yield potentials	100%
Split applications of nitrogen fertilizer ____ as compared to a single application of the same amount of nitrogen.	Reduce leaching losses	100%
The depth of sampling no-till soils as compared to conventionally tilled soils is ____ _	Shallower	100%
In which of the following cases would you expect the greatest nitrogen mineralization?	Soil amended with biosolid	100%
The rate of N release is least affected by microbial activity for ___	Sulfur coated urea (no wax)	100%
If substantial ammonia is lost after application of UAN, a _____ inhibitor might reduce this loss.	Urease	100%
Which of the following actually neutralizes soil acidity when lime is applied?	CO3-	67%
Which of the following N losses is probably most important for a field of soybeans?	Crop harvest	67%
Which of the following is not used in determining a lime recommendation?	Exchangeable sodium percentage	50%
What is the most common form of potassium fertilizer?	KCL	50%
Which of the following is more soluble in a flooded soil than in an upland soil?	Manganese	50%
_____ plant parts should be sampled to obtain reliable tissue test results.	Specific	50%
If a manure contains 1.9% P on a dry basis and is 60% solids, what is the "as is" (wet basis) P concentration?	0.6%	0%
If a fertilizer is 13-13-13 on an oxide basis, what is the analysis on an elemental basis?	13 - 5.7 - 10.8	0%
If a soil contains 40 lb P/acre, it contains __ ppm P	20	0%
How many lbs of 10-20-10 should be applied to an acre if the fertilizer recommendation is 60 lbs of P2O5?	300	0%
Immobilization of inorganic N during decomposition will be most likely if the material decomposing has a C:N ratio of ____	35	0%
Lime passing through which of the following mesh sizes would be of greatest benefit in neutralizing soil acidity?	60	0%
At which of the following soil pHs would phosphorus be most available for plant uptake?	6.8	0%
Which of the following best describes adaptive nutrient management?	Adjust nutrient applications to optimize yields and profits	0%
Sinkholes in a Karst topography area can serve as conduits for N and P movement to _____	All of the above	0%
Which of the following fertilizers has the greatest potential to decrease soil pH	Ammonium nitrate	0%
Which of the following nitrogen fertilizer sources has the least% nitrogen	Ammonium sulfate	0%
Which of the following is the best measure of total acidity in a soil?	Buffer pH	0%
A major way calcium is supplied to plants is by ______.	Cation exchange	0%
____ is the plant nutrient concentration below which crop growth rate declines significantly	Critical value	0%
Which of the following concepts of fertilizer recommendations increases soil fertility level most slowly?	Crop sufficiency	0%
When sampling a manure pile for analysis, how many samples is enough?	Enough to assess manure variability	0%
Which of the following pathways is of most concern for loss of phosphate from a recently tilled soil?	Erosion	0%
Which of the following is least likely to change soil pH?	Gypsum	0%
Conditions which favor volatile losses of nitrogen as ammonia include ___ _	High temperature	0%
Which of the following would not usually be a good source ofN	Irrigation water	0%
Which of the following is a chemical uptake form of potassium?	K+	0%
Which of the following loss pathways is of most concern for loss of nitrate N?	Leaching	0%
Which of the following is characteristic of a N deficiency?	Leaves yellow at the bottom of the plant first	0%
Symbiotic nitrogen fixation is the process where atmospheric nitrogen is converted to ammonia in the root nodules of ______	Legumes	0%
Potassium can be leached into subsoil if long-term additions of ____ are applied to a soil	Lime	0%
At which of the following soil test levels would you expect the greatest crop response?	Low	0%
Which of the following conditions allow N-based manure applications?	Low P index	0%
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	0%
Which of the following micronutrients is more available at pH 7 than at pH 5?	Mo	0%
Which of the following is an uptake form of nitrogen?	N03-	0%
Which of the following is not an essential nutrient for plants?	Na	0%
Which of the following is not needed for rapid nitrification to occur?	Nitrate	0%
Which is the best sample pretreatment for a tissue sample prior to submitting the sample	Partially air dry in a paper bag	0%
Which of the following plant nutrient forms is most immobile in soil?	Phosphate	0%
Which of the following factors creates a situation where seed germination is likely reduced?	Place a fertilizer with a high salt index near the seed	0%
A comprehensive nutrient management plan (CNMP) should discuss ____ _	P movement to surface water	0%
Which of the following plant nutrients is a cation in soils?	Potassium	0%
Which of the following plant nutrients is a macronutrient?	S	0%
Which of the following soil textures would likely have the lowest soil fertility?	Sand	0%
Which of the following is a beneficial element that is important in animal nutrition?	Se	0%
Which of the following is not part of the 4R system?	Sink	0%
Which of the following is the least available source of nutrients?	Soil minerals	0%
Fertilizer recommendations obtained from a plant tissue analysis are ____ used to make a foliar fertilizer recommendation during that crop year.	Sometimes	0%
Which of the following nutrient placement methods is common for small grains and forages?	Top-dress	0%
Soil testing and plant tissue test are usually ________.	Used to test for nutrient deficiencies	0%
Nutrient concentrations ____ change with depth.	Usually	0%
The portion of a fertilizer that easily dissolves in water is ____ _	Water soluble	0%
Production history or level of management is a good way to determine ___ _	Yield goals	0%

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Nutrient Management - Statistics