{"title":"[The effect of chronic UVB-radiation on the nitrogen-fixing capability of soils in a field experiment].","authors":"T I Uralets","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>The effect of chronic UV-B-irradiation on the nitrogen-fixing ability of soil was studied in a field experiment. In the study, LER-40 lamps were used as a source of additional UV-B-irradiation with respect to natural illumination (the irradiation level = 0.34, 0.49 and 0.77 W/m2). Nitrogen-fixation was measured by gas chromatography. The experimental results were treated by bifactorial analysis of variance. It was found that chronic UV-B-irradiation affected the nitrogen-fixing ability of soil during the observation period (June-August). At soil UV-B-irradiation of 0.34 and 0.49 W/m2 the nitrogen-fixation intensity increased by 17 and 9%, respectively, and at soil UV-B-irradiation of 0.77 W/m2 it decreased by 13%, when compared to untreated controls.</p>","PeriodicalId":76078,"journal":{"name":"Kosmicheskaia biologiia i aviakosmicheskaia meditsina","volume":"25 4","pages":"15-7"},"PeriodicalIF":0.0000,"publicationDate":"1991-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Kosmicheskaia biologiia i aviakosmicheskaia meditsina","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The effect of chronic UV-B-irradiation on the nitrogen-fixing ability of soil was studied in a field experiment. In the study, LER-40 lamps were used as a source of additional UV-B-irradiation with respect to natural illumination (the irradiation level = 0.34, 0.49 and 0.77 W/m2). Nitrogen-fixation was measured by gas chromatography. The experimental results were treated by bifactorial analysis of variance. It was found that chronic UV-B-irradiation affected the nitrogen-fixing ability of soil during the observation period (June-August). At soil UV-B-irradiation of 0.34 and 0.49 W/m2 the nitrogen-fixation intensity increased by 17 and 9%, respectively, and at soil UV-B-irradiation of 0.77 W/m2 it decreased by 13%, when compared to untreated controls.
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