This experiment began in 1938 at a cool temperate site in
England. There are 3 soil series present on the experiment. Cottenham,
brown sand on Lower Greensand. Lowlands, colluvial brown earth in
This experiment began in 1942 at a cool temperate site. The Land use
and treatments in the project are as follows:
Land use: 4 categories: 1. 1942-1961; 2. 1942-1967; 3. 1967-1972; 4.