TY - JOUR L1 - http://journals.pan.pl/Content/89680/PDF/JPPR_55(4)_01_Martinez.pdf L2 - http://journals.pan.pl/Content/89680 PY - 2015 IS - No 4 DO - 10.1515/jppr-2015-0044 A1 - Martínez, José Mansilla A1 - de Juan Valero, José-Arturo A1 - Padilla, Alfonso Domínguez A1 - Picornell Buendía, María-Raquel PB - Committee of Plant Protection PAS PB - Institute of Plant Protection – National Research Institute VL - vol. 55 DA - 2015[2015.01.01 AD - 2015.12.31 AD] T1 - Competition and critical periods in spring sugar beet cultivation UR - http://journals.pan.pl/dlibra/publication/edition/89680 T2 - Journal of Plant Protection Research ER -