Anthropogenic influence on enzymatic activity of light-grey forestal surface-gleyed soil

Abstract

The critical shortage of rainfall along with the higher average temperatures during the growth and development of spring barley and corn has significantly affected the soil biological activity, in particular, the decomposition of linen was significantly slowed. Studies have shown that the lowest values of the general biological activity of light-grey forestal surface-gleyed soil under spring barley and corn on grain were obtained on the control version without fertilizers -15.65 ± 1.93 and 30.47 ± 8.05 % respectively. Organo-mineral fertilizers provided the highest decomposition of linen cloths -31.70 ± 4.58 % in soil under barley and 63.33 ± 2.43 % under corn. Light-grey forestal surface-gleyed soil is characterized as very poor on the scale of soil supply by enzymes. The highest catalase activity is marked with the introduction of 15 t/ha of manure + 0.5 n NPK+ 1.5 n CaCO3 by Nh -0.65 ml of 0.1 n KMNO4 /g of soil for 20 min under spring barley, that is associated with a favourable pH value (5.68). The highest activity for corn was shown in version 17 with mineral fertilizer N105Р101К101 and liming 1.5 n СаСО3 by Nh -0.85 ml.