Abstract
In 1958-9, an area of permanent grassland was divided into plots to be used for hay production and given no fertilizer or heavily fertilized with P, K, PK, NPK or Ca and pasture plots left without fertilizer or given PK, NPK or Ca. DM production was estimated yearly and botanical composition and soil fertility analysed at regular intervals. Changes in the plots with a view to ecological indicator values and population dynamics and data on mineral uptake in the different treatments are discussed. Pasture plots not given fertilizer changed the least over the study period. DM yield, spp. diversity and changes in biomass are tabulated for each treatment and spp. present are listed. (Abstract retrieved from CAB Abstracts by CABI’s permission)
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