Lesson 4 - Visualization and Analysis of Soil Data

Background
Yield variability can frequently be attributed to the differences in physical and chemical soil attributes. In addition to soil survey maps, the inconsistency of various soil properties can be evaluated using the results of laboratory analyses performed on samples obtained from various locations within a field. For certain soil properties, e.g., electrical conductivity (EC), on-the-go mapping techniques are available as well. Integrated consideration of laboratory analysis data, on-the-go measurement records, and publicly available soil survey maps (Lesson 1) can provide valuable information with regard to spatial differences in growing conditions. For example, an expert may be interested in comparing spatial patterns disclosed via electrical conductivity, soil type and organic matter content maps through the process described in this lesson.

Objectives

Import and display an on-the-go soil sensor data layer (electrical conductivity map)
Import and display a data layer containing the results of soil laboratory analysis (organic matter content)
Create a layout containing both data layers that is ready for visual interpretation by an expert
Define soil sampling patterns using a grid-based pattern and a targeted sampling approach

Instructions	Objective	Input data	Output project
Exercise_4-1.pdf	Soil EC data processing	Veris_EC.txt & Project_4-0.map	Project_4-1.map
Exercise_4-2.pdf	Organic matter map interpolation	Soil_analysis.txt	Project_4-2.map
Exercise_4-3.pdf	Soil data layot		Project_4-3.map
Exercise_4-4.pdf	Soil sampling prescription		Project_4-4.map, Targeted_sampling.zip & Grid_sampling.zip

Please e-mail vadamchuk2@unl.edu to obtain the password allowing complete access.

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