deficit

How much water does a woodland or plantation use: a review of some measurement methods

Determining the water balance of a landscape is important to sustainable management of water, vegetation and land resources. Water flow through vegetation is the principle pathway for the discharge of water from Australian landscapes. The rate of this discharge is determined by solar radiation, leaf area index, vapour pressure deficit and soil moisture content. Tree transpiration from plantations and native woodlands and forests is an important determinant of the water balance of much of the (more)...

Drought, the "creeping disaster"

As a general phenomenon to cover most situations, drought is difficult to define, though basically a drought is due to a severe, abnormal deficit in the rainfall of a region. Four major types of drought are recognised: meteorological drought, agricultural drought, hydrological drought and socio-economic drought. This report is mainly concerned with hydrological drought, which is manifested in both the availability of surface water and the levels of groundwater. There are numerous indices for drought (more)...

Irrigation Insights 4 - Regulated Deficit Irrigation and Partial Rootzone Drying

This information package was commissioned by the National Program for Sustainable Irrigation, a program of Land & Water Australia, the Cooperative Research Centre for Viticulture and the Grape and Wine Research and Development Corporation to provide an overview of the background, current developments and future prospects for implementing regulated deficit irrigation and partial rootzone drying.

NPIRD UPDATE- No.5 July 2002