%0 Conference Paper
%A Kelderer, Markus
%A Matteazzi, Aldo
%A Casera, Claudio
%D 2004
%E Boos, Markus
%F orgprints:14542
%K apple, organic orchard, residues, copper, sulphur, lime sulphur
%P 213-216
%T Residues of copper and sulphur on fruits from organic orchards
%U http://orgprints.org/14542/
%X Copper und sulphur compounds are listed in annex 2b of the EC regulation 2091/92 and  are used in organic orchards to control scab, mildew and sooty blotch also during summer  time. In Italy, copper compounds have a waiting period from 20 days between last  treatment and harvest, for sulphur compounds it differs and can reach until 30 days for  lime sulphur. The trials carried out showed that using the recommended low dosages for  copper and lime sulphur it should not be a problem to reduce these waiting periods. The  residues remained clearly under the legal values, also when the samples where collected  the same day of the treatment.