Distinguishing the soil water hydrologic factors controlling this apparent steady-state leaching situation (Grismer 1990) is critical for developing long-term sustainable recycled water use strategies in the region.
Then they ran their results from the combined model with 16 years of regional weather data, four different soil water levels at planting time, and other site-specific information to generate spring canola yield estimates for nine locations in Nebraska, Colorado, and Kansas.
Five black poplar clones were subjected to three different soil water regimes (well-watered and two water-stressed treatments) to evaluate their morpho-physiological and biochemical responses to water deficits.
Farmers in the semiarid central Great Plains have traditionally used a 2-year, no-till, dryland, winter wheat/fallow cropping system, which stretches scarce soil water supplies and minimizes crop failure from water stress.
Among specific topics are the global water balance and agronomic production in relation to food security, sustaining groundwater use in South Asia, China's green-water and blue-water approaches to food security and soil water management, and enhancing the efficiency of using precipitation in the world's dryland agroecosystems.
The GLEAMS model predicted runoff, deep percolation, and evapotranspiration reliably having percent difference of less than 5% between predicted and observed data but underestimated soil water contents.