2023 Soils Test Answers PDF

Name ( NSUERS | Mark /30...

Name ( NSUERS | Mark /30 Yr 10 Soils Unit Test 1. EA Fletye, Gercctae, ue ce! AAn,Ueneee Heldny a y. Shcevt eCpe. Sime.g Copustf Identify two physical characteristics that soil testing can determine. ae ] 2 “41 mark) 4 2. Identify two chemical characteristics that soil testing can determine. 2. ‘a Leseaees. veeees 0 ey Eater oer AL A le (1 mark) 3. Explain what soil pH is a measure of. Ne Ace A ‘ taf CA \ lc a \ ath wr so. |. eee oo oe (1 mark) ree reece eesesresnen2ee2 FF FS ee2Fe ee ee 200 & © © eo Oe wore eer o eee cee ero eee eee eee eee eee © oe oo beo e e022 080 eco eo ec oreo ec ooo eoeoeo ( A. Identify what a neutral soil pH is. 5. Discuss the implications of high or low pH levels in the soil. _ Dotky Maga... and lew yH lecls ve. lee “A cee afte cf e pleck.qreadbes Me, taludes| veves pleat till baw way: , ante (1 mark) © ip Suite yl Jer avberoh vy pn Re ¥ 6. Describe how to test soil pH using a pH test kit. ° KE L, ; L CAA A a\ Ur (c ‘ye | peo lh a] en ir a ee eee eee eee rr a rrr renner rrr rr Cet rrr rrr seroeeseucesesnnt vevucuerossesssseresuscsescssesssece ee ween meee eneeawewe nese nvceeseetessseceenesecsesesssnssecse me ~ Add _— Unive s al fed Coe ony Loess “ vy! ur nn VDwie 7. Choose one of the following soil tests and describe the Restor it is tested and How you can undertake the test: Organic Matter, Water Holding Capacity, Salinity. ae rrr rr ee reer errr Ce ers rrr rr rrrrrrrrr Lica il, Ww ty. quel wice obeal achon curoh O. j rl. Loeees | | Lv tna cA gewh lvu be soi wa \\ a (A tard rar Avent ree ee CE I a fa a ee ccscccceracessns sssecscoversesssssorovercrsersesc cece cree cece cer sever moss scesssnssssessesssssssresesessses ee I i a de, re Apia, PO i SE ae 8 Texture is determined by the relative proportions of the...... rh Te particles in a soil sample. (1 mark) and ( | ety Ae 9. Describe what a ribbon test is and what it is a test of. ele rune. flu 0 U cool fr Leese f fe bb. ”~ Hel tes + ce cece cere ce nsec essen newer seeresancssnassnsesncssssos escssuscccsosscsssssssoresc rcsscoescsescrecesee eT ce Gu ETS Be Clay A Lobe te cee fon @ dt. ce Ee d LOO, by Leeaee 7 aoe “Gh... wd scan SseR San hmmm salsa BORE (2 marks) sorl snake a ?¢ ifoe. / 5 fre not : wrcr y la Gy (Le ( 10. Explain what soil salinity is. sscoecescce cscs ss sssscsorcrssesesorccsorcecssse esecee sees esse esse sens ses essseseccscnsessssssssssesssss cen cee u cece ces el ekg loa eer ee i a le A ek. Rap of Sales om Ma coil. Unattraelly Sedo CO lee marks) 11. Describe the effect soil salinity has on pasture and crop erowth?. esce ce ee ees screcsressrcrerererscsescreres ee ee cere sere eee sess essere reserersssssescsevesssesesessc cence cece cece eens rere juloady bidet tuber alee On pe rests oA. p ,- b Tt. iN er aA { Pies. lechns oo, MUI fh. SA CETT lave erTETnETe (2 marks) Over Sey bee a [ fleets a A- a eA Ushi. weet fe mal) (2 marks)® ad 13. Rank the following in order of size (1-4): oe | | Mineral Particle Le sub - Se Clay 4) Course Sand J LN Fine Sand | (2) MN (.) percent. aan a ;. 40 S vorcon Silt. SILT : CLAY Ne NEUEN e sane 56 Dees oe ask) 14. Use the texture triangle to identify the proportions 15. of sand, silt and clay in a: (4 marks) 4a. medium loam | 100 «909 «480 0)«6©70)06CU OSC siCiOs—( HC Ot—“‘é‘ b. silty clay loam | percent SAND \\  16. What texture would a soil with the following be: a. 20% Silt, 50% Sand and 30% Clay serereee seer eceer eee 0 0 e crc oc cee Meco creeper eeossexresreergeserveeeser wore ccc b. 40% Sand, 10% Silt and 50% Clay ee Ay to you This following question is what we call “unfamiliar context”. There is information that is brand new and it requires you to apply your soils knowledge in this new contest. This is why it is a 5 mark question. Take your time. There is no “Right” answer. It’s about you showing your soils knowledge by articulating your response to this new context. The more depth the better. 17. Our Sturt Grove Farm soil has a moderate to good water holding capacity given organic matter of content and appropriate clay presence. A recent environmental survey on some of the outer banks the Gawler River on the Virginia plains in South Australia has revealed a significant increase in soil erosion leading all the way to the banks, largely attributed to recent changes in land use. The original land was grazed pastures and native vegetation. It has developed to more industrialized agriculture from built up hothouses/greenhouses, urban developments and housing complexes. Given the of following data about the soil and environmental conditions in the area, assess the potential impacts this increased soil erosion on overall topsoil health and comment on potential broader environme ntal health: Soil Composition: Sand: 65% Silt: 20% Clay: 15% Organic Matter: 3% Soil pH: 5.8 Chemical Characteristics: Low Nitrogen Levels Low Phosphorus Moderate Potassium Physical Characteristics: High Water Runoff Potential Mainly bare ground — no to little vegetative erowth. So, analyze how the shift in land use, coupled with the soil's physical and chemical properties, could affect the long term topsoil condition, especially in the context of increased soil erosion. Consider not only the impact on the soil but potentially where this soil is running off into the Gawler river. Can you discuss potential long-term environmental consequences? Could you propose any ways to improve the soil health in the area? 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