1. EFFECT OF NICKEL ON WHEAT PLANTS, SOIL MICROORGANISMS AND ENZYMES. Authors: NADA MILOŠEVIĆ, MITAR GOVEDARICA, RUDOLF KASTORI, NOVICA PETROVIĆ.2. THE EFFECT OF ZINC FROM THE SEED ON ANTIOXIDANT DEFENSE SYSTEM IN WINTER WHEAT (Triticale aestivum L.) SEEDLINGS. Authors: RUDOLF KASTORI.