Rice Production Using Groundwater
Low surface water irrigation allocations in recent years have led to the increased use of groundwater for rice growing. Groundwater usually has higher salinity than surface water. the salinity of surface water is measured using electrical conductivity (etc), and is usually below 0.2 dS/m (130 ppm). If irrigation water has higher salinity, it can impact on rice growth and yield, particularly at the seedling and panicle initiation (Pi) to booting stages. Hence, growing rice with higher salinity water increases the need for growers to monitor water quality during the rice growing season.
Low rainfall conditions after ricegrowing can lead to reduced leaching and possible salt build-up in the soil for following crops.
Primefact 701, NSW Department of Primary Industries, September 2007