4 20 soil texture
TRANSCRIPT
![Page 1: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/1.jpg)
Tilth Physical condition of soil,
especially in relation to its suitability for planting or growing a crop.
The ability of the soil to form stable aggregates
Improved by the addition of organic matter
Improves both moisture holding and drainage.
Improves the microbial balance of the soil
![Page 2: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/2.jpg)
Tilth
Good Bad
![Page 3: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/3.jpg)
Compaction
Why do you sink in a ball pit?
![Page 4: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/4.jpg)
All particles are the same size Cannot compact Pore space is always
the same Readjust position
![Page 5: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/5.jpg)
If particles were different sizes: Small particles are
forced into pore spaces Compaction
![Page 6: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/6.jpg)
Types of Soils
Particle Size Sand Silt Clay
Soil Classification Sandy Soil Clayey Soil Loamy Soil
![Page 7: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/7.jpg)
Drainage
The ability to hold just the right amount of water
Drainage is measured by percolation tests Sandy soils don’t hold enough water Clay soils hold too much
![Page 8: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/8.jpg)
Water – what is available for plants? Percolating water Capillary water
Adhesive (bound) Ground water
![Page 9: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/9.jpg)
Soil Improvement
Drainage & Aeration: Create Aggregates
Lime & gypsum Organic Matter
Add earthworms Raised beds
Moisture Retention Organic Matter Mulches
![Page 10: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/10.jpg)
Tillage - the plowing or harrowing of land in preparation for growing crops Good
Break up clumps Mix in soil
amendments Remove rocks &
roots Shape the soil
Raised bed or furrow Remove weeds
Bad Increased erosion Can hurt soil
aggregates Wet soil Clay soil
Can disrupt earthworm and fungi
![Page 11: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/11.jpg)
No-till
Seed is drilled or sliced into soil Top cover of stubble, dead material is not
removed
![Page 12: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/12.jpg)
When can soil be worked in Spring? Must crumble when worked Dig about 6” down If a hand-full of soil forms a tight ball after
releasing pressure, it needs to dry more Working soil too soon in spring causes
compaction
![Page 13: 4 20 soil texture](https://reader036.vdocuments.us/reader036/viewer/2022081420/555318c6b4c90575768b4808/html5/thumbnails/13.jpg)
Soil texture testing
Need samples Clay area behind greenhouse Sandy soil mixed Garden soil
Texture test Compaction Test Suspension Test