Wpływ promieniowania mikrofalowego wyemitowanego do nieodkażonego podłoża szkółkarskiego na przeżywalność i wybrane cechy jakościowe sadzonek sosny zwyczajnej (Pinus sylvestris L.)
AbstractThe health condition of seedling material, its general condition and the quality of plant raising arc the factors that determine the successfulness of the crops and their durability, especially when those are influenced by harmful factors. In traditional tree raising in forest nurseries the basic condition of receiving good quality material is the assurance of appropriate soil of proper composition and structure, free of soil pathogens. The blights of root system and seedlings arc some of dangerous diseases that occur commonly in forest nurseries as well as in reforestations. In order to prevent the infectious diseases, disinfection is implemented. The methods of disinfection using non-ionizing (microwave) radiation are used successfully in other fields such as medicine or food industry. The analysis of literature of subject shows that according to the present state of knowledge the mutual relations between the amount of microwave radiation energy delivered to soil and its fertility are not explored enough and the relations not determined quantitatively. This statement concerns mainly forestry, especially nursery soils. There is, also, a shortage in devices that could serve this purpose. The aim of the research was to determine the influence of the microwave radiation energy values emitted to the nursery substrate on its temperature, survivability and chosen biometric characteristics of Soots pine seedlings as well as on the empirical formula of the soil. The realization of the goal of this work required designing original devices and research posts. The outdoor experiments carried in the loamy sand confirmed the positive influence of microwave radiation showing statistically essential difference in the number of seedlings between the control area and the areas exposed to microwaves. The energy value of microwave radiation ranging from 10,67 M.1 • ni-2 to 38,40 MJ • m-2 emitted to the nursery substrate before sowing has an impact on the survivability of Scots pine seedlings causing their growth. While the research was conducted about 100% more seedling were obtained on the areas exposed to the microwave radiation of energy value equal to 19,20 MJ • m 2 in comparison to the test area. Seedlings of the best biometric characteristics were obtained while the doubled energy was used. The increase in the energy of microwave radiation from 19,20 MJ • m-2 to 38,40 MJ • m-2, which would be directed before the sowing in the non-disinfected nursery substrate, has no influence on the increase in survivability of Scots pine seedlings. When comparing the energy consumption of the steam and microwave disinfection methods, we notice the lower energy consumption of the microwave disinfection that constitutes even 17,2% of the energy expenditures of the steam disinfection while the first technique is far easier to use. Microwave radiation of energy value ranging from 12,80 MJ • m 2 to 38,40 MJ • m-2 emitted to the nursery substrate before sowing influences the chosen biometric characteristics of Scots pine seedlings improving their quality. During the research Scots pine seedlings from the areas exposed to microwave radiation obtained statistically higher rates of the chosen biometric characteristics in comparison to the seedlings from the control area. Comparing the results of the average seedling parameter values for the energy option of 38,40 MJ • m-.2 to the seedlings from the control area (the biggest differences), the diameter of a root collar is bigger by 73% and dry root weight bigger by 74%, while dry overground weight is bigger by 228%. Together with the increase in microwave radiation energy emitted to non-disinfected nursery substrate (loamy sand), the range of its influence on the survivability of Scots pine seedlings increases.
|Other language title versions||The influence of microwave radiation emitted to non-disinfected nursery soil on the survivability and chosen biometric characteristics of Scots pine (Pinus sylvestris L.)|
|Publisher||Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie, MNiSW |
|Publishing place (Publisher address)||Kraków|
|Book series /Journal (in case of Journal special issue)||Zeszyty Naukowe Uniwersytetu Rolniczego im. Hugona Kołłątaja w Krakowie. Rozprawy, ISSN 1899-3486, (0 pkt)|
|Publication size in sheets||8.5|
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