ALCA Soils & Fertilizer Review
Quiz by Michael Gaspar
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16 questions
Show answers
- Q1Why do desert soils have significantly less than 5% organic matter?It Don't MatterSoil is to thickNot enough rainCaliche30s
- Q2Which type of soil has the largest particle size?SiltLoamClaySand30s
- Q3Which of the following are types of soil texturing method?Sifting & LiftingRibbon & SiftingJar & SiftingRibbon & Jar30s
- Q4Why can you not practically alter soil texture?Not financially feasibleVery practical on a large scaleTakes to longEasy to incorporate organic matter30s
- Q5Which of the following is NOT a type of salt that accumulates in soil?Potassium (K)Sodium (Na)Nitrogen (N)Calcium (Ca)30s
- Q6How does soil become saline?Leaching RequirementGood irrigation waterDeep WateringApplication of fertilizers30s
- Q7Which is NOT a way to knock off Sodium (Na+)?Adding FertilizerLeaching RequirementDeep WateringAdding Gypsum30s
- Q8Which of the following is NOT an issue with caliche?Reduces water movement through soil profileLeads to salt accumulation and reduced aeration in soilLow pH can cause nutrient deficiencies in plantsRestricts root growth to upper levels of soil30s
- Q9How do you know if you need to apply gypsum to soil?Soil cracks when dryRainwater soaks in more slowly than irrigation waterSoil won’t absorb waterAll answers listed30s
- Q10If you have a soil jar test and determine that the sample is 40% Sand, 25% Silt and 35% Clay what is the type of soil?Sandy clay loamSilt loamClay loamSilty clay60s
- Q11Which of the following is a symptom of Nitrogen (N) deficiency?Uncontrolled growthFoliage may drop early in springOlder leaves turning a dark green or reddish purpleYellowing of older leaves, bottom of plant60s
- Q12Which of the following is a symptom of Iron (Fe) deficiency?Leaves may have necrotic spotsFound on older growthBurnt leaf tipsInterveinal chlorosis (yellowing leaf with green veins)60s
- Q13Which of the following is a complete fertilizer?21-0-021-7-140-20-036-0-060s
- Q14What does N-P-K stand for?Nitrogen, Plutonium & PlatinumNitrogen, Potassium & PhosphorusNitrogen, Phosphorus & PotassiumNeon, Palladium & Phylum60s
- Q15Which of the following is a disadvantage of Organic fertilizer?LightweightLabor intensive to makeRequires less fertilizer applicationPathogens & weeds60s
