Planting trees is the solution to re-habilitating the land.
Salinity, acidity and sodicity are major problems being confronted by Australian rural communities. Discuss why these processes decrease productivity of agricultural crops.
4 comments:
Anonymous
said...
With planting trees. I don't know just yet but i think that there are some better trees that can thrive in a high concentration of salinity. Also with the water table can it rise so much that animals that eat grass will taste salt and maybe die. Can you talk about the effects of salinity of animals.
Some trees have a higher tolerance for saline soils than others (e.g. mangroves for instance). I believe you should concentrate on the effects on plants (research osmosis). WRT animals: are the causes for saline soils related to horticulture or livestock? How would animal behaviour affect their vulnerability?
I can't find anything to do with intermolecular forces in relation to acidity and planting trees to help the soil... Does it really have something to do with acidity or do we not need it? Or did I hear wrong and it wasn;t intermolecular forces and acidity>?
Intermolecular forces - you will need to look at the soil particles themselves. Find out if they have a surface positive or negative charge and therefore what kinds of ions are attracted to them. Sodicity relates to the proportion of sodium to calcium ions I believe and the effect this has on soil particles being attracted to each other. Acidity (pH) affects the availability of nutrients. You could research the effects of pH on nutrient availbility.
4 comments:
With planting trees. I don't know just yet but i think that there are some better trees that can thrive in a high concentration of salinity. Also with the water table can it rise so much that animals that eat grass will taste salt and maybe die. Can you talk about the effects of salinity of animals.
Some trees have a higher tolerance for saline soils than others (e.g. mangroves for instance). I believe you should concentrate on the effects on plants (research osmosis). WRT animals: are the causes for saline soils related to horticulture or livestock? How would animal behaviour affect their vulnerability?
I can't find anything to do with intermolecular forces in relation to acidity and planting trees to help the soil...
Does it really have something to do with acidity or do we not need it?
Or did I hear wrong and it wasn;t intermolecular forces and acidity>?
Intermolecular forces - you will need to look at the soil particles themselves. Find out if they have a surface positive or negative charge and therefore what kinds of ions are attracted to them. Sodicity relates to the proportion of sodium to calcium ions I believe and the effect this has on soil particles being attracted to each other. Acidity (pH) affects the availability of nutrients. You could research the effects of pH on nutrient availbility.
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