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CORRELATION BETWEEN FERTILIZER TYPE AND RATE, UREASE ACTIVITY AND TOTAL NITROGEN AND AMMONIUM NITROGEN CONTENTS IN A CHERNOZEM SOIL UNDER WHEAT
Poljoprivreda i Šumarstvo
Research was conducted on the effects of mineral fertilizers and manure on urease activity and total nitrogen and ammonium nitrogen contents, and their correlation in a chernozem soil during four developmental stages of wheat. The study involved the following treatments: unfertilized control; N2 (100 kg/ha N); P2 (100 kg/ha P); K2 (100 kg/ha K); N2P2; N2K2; P2K2; N1P1K1 (50:50:50 kg/ha); N2P2K2; N3P3K3 (150:150:150 kg/ha), and N1P1K1 + solid manure (20 t/ha). Urease activity was determined bydoi:10.17707/agricultforest.61.3.04 fatcat:ry7m4z7nyzfkfjbrhsdge7ja6y