date:Sep 06, 2015
California walnut acreage amounted to 181,000 in 1990 and increased every year to 300,000 acres in 2015. In the past decade alone, acreage increased by 40 percent. The number of trees per acre went up significantly as well.
To provide adequate water supply to the trees, growers are using surface water if they receive allocation from their water districts. Groundwater from wells is used to make-up for the shortfall of allocation or in case the allocation amounts to zero.
The forecast is based