Articles
Experimental determinations of microwave soil disinfection in vegetable growing areas
Article number
1391_50
Pages
365 – 372
Language
English
Abstract
Experimental tests for verifying the functionality and validating the effectiveness of the microwave and UV treatment carried out with the Experimental Demonstrator for soil disinfection – MICROSOIL, in different conditions, are presented.
The microwave treatment applied during the experiments has influenced the values of some chemical components in the soil structure.
A slight increase in pH values and electrical conductivity is observed.
Significant increases in cation content are found in the case of N-NH4; Na and Ca, the other elements respectively K and Mg recorded slight increases.
As regard the anions, Cl increased 2,8 times in its content and N-NO2+N-NO3 and P have got slight increases, while SO4‑2 recorded a slight decrease.
The microelements have obtained different variations or remained at the same values, however, an increase of Mn by almost six times (5.93), as well a slight decrease of Cu can be noted.
In terms of nematode control, the microwave treatment method is comprehensive, but not as effective as chemical treatment.
The proposed treatment solution, namely the microwave treatment, presents the advantage of a non-polluting disinfection method over the chemical method regardless of the active substance used.
Carrying in the future a combined treatment, microwave field and UV becomes, an advantage because in addition to the thermal action, UV-B radiation produces DNA alteration, destruction of proteins and cell membranes, leads to the limitation of photosynthesis and weed growth and also causes a decrease in populations of mites, nematodes and rotifers/ wireworms.
The microwave treatment applied during the experiments has influenced the values of some chemical components in the soil structure.
A slight increase in pH values and electrical conductivity is observed.
Significant increases in cation content are found in the case of N-NH4; Na and Ca, the other elements respectively K and Mg recorded slight increases.
As regard the anions, Cl increased 2,8 times in its content and N-NO2+N-NO3 and P have got slight increases, while SO4‑2 recorded a slight decrease.
The microelements have obtained different variations or remained at the same values, however, an increase of Mn by almost six times (5.93), as well a slight decrease of Cu can be noted.
In terms of nematode control, the microwave treatment method is comprehensive, but not as effective as chemical treatment.
The proposed treatment solution, namely the microwave treatment, presents the advantage of a non-polluting disinfection method over the chemical method regardless of the active substance used.
Carrying in the future a combined treatment, microwave field and UV becomes, an advantage because in addition to the thermal action, UV-B radiation produces DNA alteration, destruction of proteins and cell membranes, leads to the limitation of photosynthesis and weed growth and also causes a decrease in populations of mites, nematodes and rotifers/ wireworms.
Authors
I.L. Dumitrescu, M. Vintila, M. Toma
Keywords
disinfection, microwave field, nematodes, ultraviolets, weeds
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