anonymous
  • anonymous
HelP pLEASE =) A student observes poor growth of plants in a garden containing high clay content. Clay content reduces drainage in soil. Which of these is the best method to improve plant growth in the garden? Answer water the plants once a month mix soil with chemicals which absorb the air do not dig or till the soil add sand to the soil
Biology
chestercat
  • chestercat
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anonymous
  • anonymous
When plants (trees & shrubs) are cleared from a site, soil is exposed to sunlight and the eroding effects of wind and water. Soil aeration is increased and the rate of weathering increases. Apart from erosion, the proportion of organic matter in the soil gradually decreases, through the action of microbes in the soil which use it as a source of energy ‑ unless the new land use provides some replacement.
anonymous
  • anonymous
TYPES OF SOIL DEGRADATION A number of major soil related problems occur in Australia these include: -Loss of soil fertility (see lesson on nutrition) -Erosion -Salinity -Soil compaction -Soil acidification -Build up of dangerous chemicals
apoorvk
  • apoorvk
Add sand. that will increase drainage, as sand is pourous.

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anonymous
  • anonymous
tAHNK YOU =)
apoorvk
  • apoorvk
Now worries =]

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