ON BIOLOGICAL REMOVAL OF NUTRIENTS WITH GREEN PEA YIELD
The investigations on green pea along these lines are scanty (Balashov, 1977, Golonetov, 1975). It is well known that during the vegetation period the soil is enriched with 60 to 100 kg/ha of nitrogen due to the biological fixation (Balashov, 1977, Poshon, 1975). The amount of nitrogen fixed by green peas is probably less.
Our study aimed at establishing the removal of nutrients from the soil with the crop of green pea cultivars most widely cultivated in Bulgaria.