At 12:19 PM 7/15/2004, you wrote:
Arie, GBs are "attractive" because they are very cheap and can work well in some soils. However, I take your point about the need to measure water content accurately in an irrigated environment. This is all the more important where water is expensive and the soils have a narrow band of water availability. There are clearly some situations where GBs may used and others where they should not be used.
Martin Hodnett
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