grid soil sampling cody claflin soil 4213. objectives common practices and methods of soil...
DESCRIPTION
Practices Composite Composite Zone Zone Grid GridTRANSCRIPT
Grid Soil SamplingGrid Soil Sampling
Cody ClaflinCody ClaflinSoil 4213Soil 4213
ObjectivesObjectives Common practices and methods of soil Common practices and methods of soil
collectioncollection
Benefits and DisadvantagesBenefits and Disadvantages
How grid sampling works.How grid sampling works.
ConclusionConclusion
PracticesPractices CompositeComposite
Zone Zone
GridGrid
Methods Methods HandHand
MechanicalMechanical
http://www.youtube.com/watch?v=e0yZ8pdZDvYhttp://www.youtube.com/watch?v=e0yZ8pdZDvY
http://www.youtube.com/watch?v=vsALxsO5efYhttp://www.youtube.com/watch?v=vsALxsO5efY
Purposes of Soil SamplingPurposes of Soil Sampling1.1. Measure the nutrient content or Measure the nutrient content or
availability of the soilavailability of the soil2.2. Identify nutrient deficienciesIdentify nutrient deficiencies3.3. Predict crop response to added Predict crop response to added
nutrientsnutrients4.4. Build a nutrient management planBuild a nutrient management planH. Zhang 2009H. Zhang 2009
AdvantagesAdvantages More accurate than a composite.More accurate than a composite.
Allows layering of dataAllows layering of data
Allocates nutrients where they are needed mostAllocates nutrients where they are needed most
Save money and increase yield*Save money and increase yield*
DisadvantagesDisadvantages Can be cost prohibitive*Can be cost prohibitive*
Not ideal for all situationsNot ideal for all situations
Time consumingTime consuming
Needs specialized equipmentNeeds specialized equipment
The GridThe Grid Setting up a field Setting up a field
boundaryboundary
From here a geo From here a geo referenced grid can be referenced grid can be designed.designed.
Soil can be collected in Soil can be collected in a point or composite of a point or composite of the grid area.the grid area.
How it all worksHow it all works Soil Test LabsSoil Test Labs
ResultsResults
Cont.Cont. Interpolation Interpolation
Recs + ResultsRecs + Results
The ResultsThe Results
DifferencesDifferences
ConclusionConclusion Any sampling is better Any sampling is better
than none at all.than none at all.
Choose the method that Choose the method that returns the most profit.returns the most profit.
Questions?Questions?