Letters to the Editor have been introduced with the aim to add some information to already published papers. However, critical comments which would open the discussion with the authors of the published papers are welcome. The length of the Letters to the Editor is limited to 2000 signs (including blanks). In case of substantial comments or additional information, the editor will contact authors of the original paper with the request for short answer. The answers are also limited to 2000 signs (including blanks).

Peter Dovč (animal production)
Franc Batič (plant production)