The phosphate state and biochemical mobilization of phosphorus compounds in arboreal plants’ soils

Olexandr Artyushenko,Oksana Dziuba

doi:10.34101/actaagrar/38/2766

Abstract

Some indices of the phosphoric fractions of primery degraded soils, which are formed separate areas of technogenic landscapes, on a spoil-bank of iron-ore mine in the near of Kryvyi Rig, under act of lignosa, which are used for biological recultivation of degraded soils are investigated. Maintenance of mineral phosphates and features of organic phosphorus accumulation are set in soil under arboreal planting. Nutrient supply of plants is enhanced by mobile phosphates and their dynamics during vegetation period. Activity of alkaline and acid phosphatase enzymes are concerned also. On the basis of the soil enzymes activity information it is stated, that under the 35-years-old plantage of Robinia pseudoacacia L. the biochemical mineralization of organic phosphorus compounds passes considerably more actively than under Pinus pallasiana D.Don.

Highlights

Phosphorus in soils has biogenic origin and its presence and amount are in close connection with the organic matter of soil
As a result of biological recultivation of the spoil-bank of an iron-ore mine by the different types of arboreal breeds, which was conducted by the scientists of the Kryvyi Rig botanical garden, primitive degraded soils are formed, in which the biogenic accumulation and transformation processes of organic matters pass with different intensity, in particular organic phosphorus compounds
As a result of receipt of organic matter as “mort mass”, the proportion of organic phosphates increasing in the superficial layer of primitive soil, the accumulation of which in a superficial layer depends on intensity of mineralization of dead plants biomass (Abakumow– Gagaryna, 2006; Makarov et al, 2002)

Summary

Introduction

Phosphorus in soils has biogenic origin and its presence and amount are in close connection with the organic matter of soil. As a result of biological recultivation of the spoil-bank of an iron-ore mine by the different types of arboreal breeds, which was conducted by the scientists of the Kryvyi Rig botanical garden, primitive degraded soils are formed, in which the biogenic accumulation and transformation processes of organic matters pass with different intensity, in particular organic phosphorus compounds. Some researchers exactly these processes suggest to use for intensifying of pedogenesis in quality indexes (Makarov et al, 2002; Phedoretz, 1995). Taking into consideration the facts resulted higher, the purpose of our work consisted in the implementation of the followings tasks: 1) to determine the features of organic phosphorus accumulation and their enzymatic mineralization in soil under the arboreal planting; 2) to explore supply of mineral phosphates in soil of investigational areas; 3) to estimate nutrition status of plants by mobile phosphates and his dynamics during a vegetation period

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Results

Conclusion