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… excessive levels of soil phosphorus from manure or compost amendments as this will favor galinsoga growth and …

… control.  Keep this species controlled around manure and compost storage areas to avoid spreading seeds into fields.  …

… In another experiment, however, four years of manure or compost either with or without additional sulphate of ammonia …

… Seeds seem to be heat tolerant and may be spread in compost (Buttenschøn et al. 2010).  The seeds survive well in …