The STUDIA UNIVERSITATIS BABEÅž-BOLYAI issue article summary

The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.

  
       
         
    STUDIA BIOLOGIA - Issue no. 1 / 2005  
         
  Article:   ENZYMATIC ACTIVITIES IN A BROWN LUVIC SOIL.

Authors:  ALINA DORA SAMUEL, MIHAI DRĂGAN-BULARDA, CORNEL DOMUÅ¢A. 		 
       
         
  Abstract:  Actual and potential dehydrogenase, catalase, acid and alkaline phosphatase activities were determined in the 0–20-, 20–40- and 40–60-cm layers of a brown luvic soil submitted to a complex tillage (no-till and conventional tillage), crop rotation (2- and 6-crop rotation) and fertilization {mineral(NP) fertilization and farmyard-manuring} experiment. Each activity decreased with increasing sampling depth. No-till – in comparison with conventional tillage – resulted in significantly higher soil enzymatic activities in the 0–20-cm layer and in significantly lower activities in the deeper layers. The soil under maize or wheat was more enzyme-active in the 6- than in the 2-crop rotation. In the 2-crop rotation, higher enzymatic activities were recorded under wheat than under maize. Farmyard-manuring of maize – in comparison with its mineral (NP) fertilization – led to a significant increase in each activity. The enzymatic indicators of soil quality calculated from the values of enzymatic activities determined in the plots of the 6-crop rotation showed the order> farmyard-manured maize > minerally fertilized (m.f. wheat) > m. f. maize (plot 6) > m.f. soybean > m.f. maize (plot 3) > m.f. oats-clover.  
         
     
         
         
      Back to previous page