Rudzu slimības Dienvikurzemes novadā 2024. gadā = Rye diseases in the Dienvidkurzeme County in 2024
2024
Bimšteine, Gunita | Vipulis, Jānis
Rye plays an important role in crop rotation, and its extensive root system allows it to absorb and utilize nutrients that other crops cannot. One of the factors that might affect the amount of grain yield is the development of various diseases. Almost every year, leaf scald (caused by Rhynchosporium secalis) is observed. Brown rust (caused by Puccinia recondita) is another disease frequently seen in rye crops. As regards the ear diseases, the most important disease is the ergot (caused by Claviceps purpurea). The sclerotia formed by C. purpurea contaminates grains which then cannot be used for food or fodder because they contain alkaloids. The aim of the study is to find out the diseases of the rye crop in the Dienvidkurzemes County. More obvious development of leaf scald and brown rust was observed in the middle of the earing stage (50–55 GS). The development of leaf scald was significantly higher in Fields No. 9 and No. 10, exceeding 7%. The mentioned fields were located near of a forest and river, which could contribute to higher air humidity and thus influence faster spreading of the disease. In the vegetation season of 2024, the spread of ergot caused by C. purpurea was observed in rye close to the place of technological tracks. Flowering occurred later, after the peak of intensive pollen flight, which allowed the pathogen to infect plants more effectively.
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Editeur Latvijas Biozinātņu un tehnoloģiju universitāte
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