Soil sampling and Inventory and mapping: a GIS-aided approach Flashcards
Soil sampling materials needed
Hand trowel, Flaglets, pail, spade
First procedure in soil sampling
Determine the center of the site from the map then locate it on the ground
Second procedure in soil sampling
. Choose whether to use a ‘Z’ or an ‘X’ sampling pattern and mark the spots to be sampled with flaglets . Collect from nine square holes for the whole
area.
Third procedure in soil sampling
Clean the upper soil surface off of debris and scrape a thin layer of the soil
afterwards.
Fourth procedure in soil sampling
Sample to a depth of at least. Using a spade, cut a 1.5 cm thick slice from one
face of the hole then trim the sides off with a trowel or knife
Fifth procedure in soil sampling
Mix the sub-samples thoroughly in a pail and obtain about 1kg of composite soil
sample
Sixth procedure in soil sampling
SPREAD the composite soil in a dry place, or on a newspaper and clean off of roots and others foreign materials. AIR DRY at room temperature then pulverized using a wooden mallet. SIEVE afterwards
0 - 1” and another at 1 - 6” depth
For cultivated crops and gardens
upper 6” is satisfactory; remove plant residue
lawns and pastures
2 samples should be submitted, one taken at 0 - 8” depth, the other at 8 - 16” (subsoil layer).
Tree and fruit crops
Materials needed in soil analysis
Soil test kit, test tube, soil sample, test tube rack, lead stirrrer
First procedure in soil analysis
Fill the test tubes with prepared soil sample up to the scratch mark
Second Prcedure in soil analysis
Add the respective solutions for the different tests as directed.
Material needed in Inventory and mapping: a GIS-aided approach
GPS, sighting compass, measuring tape, clipboard, pen, and data sheet
First procedure in Inventory and mapping: a GIS-aided approach
Locate a reference point (RF) clear of obstructions from the canopy of approximately five meter in diameter
Second procedure in Inventory and mapping: a GIS-aided approach
Take the coordinates of the RF using a handheld GPS and record the data
Third procedure in Inventory and mapping: a GIS-aided approach
From the reference point RF, select a tree or point of interest (POI) in the stand where the line or strip will begin then get the bearing using a sighting compass and take note of the reading.
Fourth procedure in Inventory and mapping: a GIS-aided approach
Determine the horizontal distance (HD) between the RF and the POI using a measuring tape and record the HD
Fifth procedure in Inventory and mapping: a GIS-aided approach
Counter-check the fore bearing by determining the back bearing from the first POI to the RF using the sighting compass
Sixth procedure in Inventory and mapping: a GIS-aided approach
Measure and record the bearing and HD of the subsequent trees along the strip
following the same procedure.
7th procedure in Inventory and mapping: a GIS-aided approach
Calculate the coordinates by converting the bearing, HD and RF coordinates to
coordinate data.
8th procedure in Inventory and mapping: a GIS-aided approach
Project the coordinate data using an appropriate GIS application and create a map
Agrometeorological Station (AGROMET)
“gathers and provides on routine basis simultaneous meteorological and biological information. It is also responsible for the dissemination of agricultural meteorological advice, warning, forecast, bulletin and other important information needed by farmers
A test which is estimated to be
around 97% less expensive than analytical testing
Soil test kit (stk)
