Soil science is the study of soil as a natural resource, encompassing its formation, properties, fertility, biology, conservation, and interactions with plants, animals, and the environment. It involves disciplines like geology, biology, chemistry, and environmental science, aiming to understand and manage soil for sustainable agriculture, land use, and environmental conservation.

1. Prakties 4 April 2023
Practical: April 4 2023

2. pH en Elektriese geleiding (EG)
pH and Electrical conductivity
(EC)

3. Formaat van verslag / Report format
Eksperimente en verslag moet onder die volgende opskrifte
uiteengeset word: / Experiments and report should be set out
under the following headings
• Naam en datum van die eksperiment / Name and date of the
experiment.
• Naam en studente nommer / Name and student number.
• Doel van die eksperiment / Purpose of the experiment. (4)
• Agtergrond – ʼn kort opsomming van die teorie van die
eksperiment en praktiese toepassings. / Background - a brief
summary of the theory of the experiment and practical
applications (9)
• Resultate / Results. (12)
• Bronnelys/ Literatuur/ References (5)

4. Materiaal en metodes / Materials and methods.
Gronde wat gebruik gaan word is die volgende /
Soils that will be used is as follows:
• Grond 1 / Soil 1
• Grond 2 / Soil 2
• Grond 3 / Soil 3

5. pH
• Plaas 20g droë grond in ʼn glasbeker.
• Voeg 50ml gedeïoniseerde water by.
• Roer vir 5 sekondes met ʼn roerstafie.
• Roer na 30 minute en laat staan vir 5 minute.
• Meet die pH in die boliggende vloeistof.
• Rapporteer die resultate as pH(H2O)
• Herhaal bogenoemde stappe met al drie die verskillende gronde.
• Place 20g of dry soil in a glass beaker.
• Add 50ml of deionized water.
• Stir for 5 seconds with a stirring stick.
• Stir after 30 minutes and leave for 5 minutes.
• Measure the pH of the dwelling liquid.
• Report the results as pH (H2O)
• Repeat the above steps with all three different soils.

6. Elektriese geleiding (EG)/ Electrical conductivity (EC)
• Meet die EG van die water van die pH(H2O).
• Bepaal elektriese geleiding van ekstrak in mS.m-1.
• Maal die EG waarde met ʼn faktor van 2.3
• Herhaal bogenoemde stappe met al drie die
verskillende gronde.
• Measure the EC of the pH water (H2O).
• Determine electrical conductivity of extract in
mS.m-1.
• Measure the EC value by a factor of 2.3
• Repeat the above steps with all three different
soils.

7. Resultate / Results
• Gee die pH(H2O) en EG van die drie onderskeie gronde.
• Dui aan wat elk van die pH waardes beteken:
– Bv. pH 5.1 tot 5.5 = sterk suur
– pH 8.5 tot 9.0 = sterk alkalies
• Gee ʼn voorbeeld van ʼn alledaagse stof wat min of meer dieselfde pH
het.
– Bv. Bier = pH 4
– Melk = pH 6.6
– Skottelgoedseep = pH 7-8
• Give the pH (H2O) and EG of the three different soils.
• Indicate what each of the pH values ​​means:
– E.g. pH 5.1 to 5.5 = strong acid
– pH 8.5 to 9.0 = strongly alkaline
• Give an example of an everyday substance that has more or less the
same pH.
– E.g. Beer = pH 4
– Milk = pH 6.6
– Dish soap = pH 7-8

8. Belangrik / Important
• Sorg dat alle toerusting en ware wat gebruik is,
gewas en skoon is na afloop van die prakties. /
Ensure that all equipment and items used are
washed and clean after the practical.
• Sorg dat die werksruimte waar u gewerk het, skoon
is na afloop van die prakties. / Ensure that the
workspace where you worked is clean after the
practical.
• Verslag / Report – 11 April 2023 via efundi