Possibility of integrated diseases control of oilseed rape | Rapša slimību ierobežošanas iespējas integrētā augu aizsardzībā
2012
Bankina, B., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Soil and Plant Sciences | Gaile, Z., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology | Balodis, O., Latvia Univ. of Agriculture, Auce, Dobele reg. (Latvia). Training and Research Farm Vecauce | Kreita, D., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology | Katamadze, M., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology
Sclerotinia stem rot (caused by Sclerotinia sclerotiorum) and stem canker (caused by Leptosphaeria spp.) are economically the most significant diseases of oilseed rape under the conditions of Latvia. The aim of our research was to estimate the risk of diseases under the local conditions and to compare various schemes of fungicide treatment, including control without fungicide, several standards of fungicide treatment to stem canker control and two forecast systems of Sclerotinia stem rot. The field trials were carried out at the Research and Study Farms ”Vecauce” and “Peterlauki” of the Latvia University of Agriculture from autumn 2008 till 2011. The incidence of stem canker was 35-85% and the severity was 0.4-1.6 points in the untreated plots. The low incidence of Sclerotinia rot was found out during the years of research – only 0.0-14.5%. The application of fungicides decreased the severity of stem canker, but did not influence the yield. Further research is necessary to study the biological properties of Leptosphaeria spp. and to improve the system of Sclerotinia rot forecasts.
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