Effect of Polymer on Soil Water Holding Capacity and Plant Water Use Efficiency
Sivapalan, Siva (2001) Effect of Polymer on Soil Water Holding Capacity and Plant Water Use Efficiency. In 10th Australian Agronomy Conference, 28 January - 1 February 2001, Hobart, Tasmania, Australia.
The amount of water retained by a sandy soil against a 0.01 MPa pressure increased by 23 and 95% by adding small amounts (0.03 and 0.07% by weight, respectively) of a polymer to the soil. However, the polymer did not significantly increase the quantity of water released from the soil by increasing the pressure from 0.01 to 1.5 MPa. The additional amount of water retained by the soil due to the presence of polymer was completely available to soybean plants grown in pots. Consequently there were substantial increases in water use efficiency of soybean plants grown in soils treated with 0.03 (12) and 0.07% (19) polymers.
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|Item Type:||Conference Paper|
|Keywords:||Polymer, sandy soil, water retention, water availability, soybeans, water use efficiency|
|Subjects:||Australian and New Zealand Standard Research Classification > AGRICULTURAL AND VETERINARY SCIENCES (070000) > CROP AND PASTURE PRODUCTION (070300) > Agronomy (070302)|
Australian and New Zealand Standard Research Classification > ENVIRONMENTAL SCIENCES (050000) > SOIL SCIENCES (050300) > Soil Physics (050305)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
|Copyright Owner:||Copyright 2001 (please consult author)|
|Deposited On:||17 Nov 2005|
|Last Modified:||09 Jun 2010 22:28|
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