Like civilization and technology, our understanding of the global water cycle has been continuously evolving, we have adapted quantification methods to better exploit new technological resources. The accurate fluxes storages is crucial in studying cycle. These physically interact with each other, are related through budget, constrained by it. First attempts quantify them date back early 1900s, ...

The purpose of this study was to investigate effects of N nutrition and water stress on stomatal behavior and CO(2) exchange rate in wheat (Triticum aestivum L. cv Olaf). Wheat plants were grown hydroponically with high (100 milligrams per liter) and low (10 milligrams per liter) N. When plants were 38 days old, a 24-day water stress cycle was begun. A gradual increase in nutrient solution osmo...