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Soil Exam 2

QuestionAnswer
What physical property is the manner in which sand, silt, and clay naturally bind together to form a larger unit in the soil? - Soil texture - Soil Structure - Soil porosity Soil Structure
Soil bulk density is the weight of a soil per unit of volume. What soil property is indirectly related to bulk density. This property decreases as soil bulk density increases? -Soil temperature - Soil aggregation - Soil porosity Soil Porosity
Which factor below provides cooler soil temperature? - wet soils - weed covered soils - high residue - high clay content - all are correct All are correct
Soil Temperature is an important physical property because is effects...? - seed germination - microbial activity - crop root growth - crop emergence - all are correct All are correct
Which of the following factors influence soil color? - organic matter content - mineral content - soil drainage - climate - all are correct All are correct
The type of soil aggregate that is most desired for a good topsoil and is like cottage cheese. - blocky - single grain - massive - granular - prismatic Granular
What are the 2 examples of a soil that has no soil structure? - granular and blocky - massive and single grain - platy and prismatic Massive and Single grain
Which of the following soil particles has the greatest surface area and chemical exchange capacity? - clay - gravel - sand - silt - pebbles Clay
What is the term for a soil that sand, silt, and clay are equally affecting its properties? - aggregate - single grain - loam - alluvial Loam
Which of the following causes the most destruction of soil structure? - wet/dry cycles - Freeze/ thaw cycles - crop residue decomposition - tillage Tillage
Soil structure is one physical property that can be improved with good management. Describe 2 management practices that can improve soil structure. - No-till - Cover Crops
What are 2 soil factors that soil texture influences (think in terms of management decisions affected by texture)? Infiltration and Aeration
True of False Bulk density of soils is greater for no-till soils than conventionally tilled soils. False
True of False Soil organic matter levels are greater for no-till soils than conventionally tilled soils. True
Pore space in soil is greater for conventionally tilled soil than no-till soils. False
Created by: user-2010370
 

 



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