Abstract
Sulfur is a major limiting factor in forage production on many range soils in California (Martin, 1958). Leaching loss of available sulfur in the form of sulfate from slightly acid, coarse textured soils has been recognized as a problem in fertility management. Gypsum (calcium sulfate) is a source of sulfur readily available to plants, but is highly susceptible to leaching loss (McKell and Williams, 1960). Elemental sulfur is more slowly available since it must be oxidized, usually microbially, to sulfate before becoming usable by plants. Elemental sulfur also is less susceptible to leaching. A series of lysimeter studies was started at the San Joaquin Experimental range in the Sierra Nevada foothills 25 miles north of Fresno, California, in 1957. In the first year of study, various rates of gypsum labeled with sulfur-35 were applied, and the subsequent distribution of natural and applied sulfur was determined in the plants, soil, air,
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
