These estimates are intended for large-scale ground- and surface-water
analyses of nutrient sources or changes in these sources. These data on
nutrients in manure can be compared to fertilizer inputs ...
The exact origin of the Morrow plots on the campus of the University
of Illinois is obscure, but they are reputed to be the oldest
continuous agronomic research study in the USA. Some evidence
This experimnet began in 1888 at a cool temperate site. The site was used as
pasture up until 1886, corn was grown 1887 and 1888. the soil is described as
Mexico series (fine montmorillonitic, mesic ...