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Texas, Oklahoma and Kansas winter temperatures and rainfall, and summer occurrence ofPuccinia graminis tritici in Kansas, Dakotas, Nebraska, and Minnesota

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Abstract

Temperature and rainfall data for the winter months December through March in Texas, Oklahoma, and Kansas were related to subsequent summer wheat stem rust severity in Kansas, Nebraska, the Dakotas and Minnesota for the period 1904–1960.Kansas winter temperatures and rainfall data were not related to rust severity in the states northward.Although precise weather rules for rust epiphytotics were not found,these preliminary analyses indicated that there might be a causal relation between March precipitation in Texas and Oklahoma and subsequent wheat stem rust outbreaks in May in Kansas and June and July in Nebraska, the Dakotas and Minnesota.

Zusammenfassung

Temperatur und Regen in den Wintermonaten Dezemberbis MÄrz in Texas, Oklahoma und Kansas wurden in Beziehung auf das Ausmass an Weizenhalmrost in Kansas, den Dakotas und Minnesota im jedem Sommer von 1904–1960 untersucht. Wintertemperaturen und Regen in Kansas waren ohne Beziehung zum Rostbefall in den Staaten nördlich davon. Obgleich genaue Wetterregeln für den Rost bei Pflanzen nicht gefunden wurden,deuten diese vorlÄufigen Untersuchungen doch an, dass eine kausale Beziehung zu bestehen scheint zwischen MÄrz NiederschlÄgen in Texas und Oklahoma und nachfolgenden Weizenhalmrost-Auftreten im May in Kansas und Juni und Juli in Nebraska, den Dakotas und Minnesota.

Resume

La température et la pluie des mois d'hiver de décembre à mars au Téxas, en Oklahoma et au Kansas furent mises en corrélation avec la rouille dublé de l'été suivant au Kansas, Nebraska, Dakotas et Minnesota pendant les années 1904–1960.Les températures d'hiver et les pluies du Kansas étaient sans corrélation avec l'attaque de la rouille du blé dans les états plus au nord. Quoi qu'on n'aie pas trouvé exactement quel type d'intempéries favorise la croissance de la rouille,les recherches préliminaires indiquent une relation causale entre la pluie en mars au Texas et en Oklahoma et l'extension de la rouille en mai dans le Kansas et en juin et juillet dans le Nebraska, les Dakotas et le Minnesota.

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References

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Journal Paper No. J-4627 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowas. Project 1163.Report of a cooperative investigation of the Iowa Agricultural Experiment Station and the Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture.

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Wallin, J.R. Texas, Oklahoma and Kansas winter temperatures and rainfall, and summer occurrence ofPuccinia graminis tritici in Kansas, Dakotas, Nebraska, and Minnesota. Int J Biometeorol 7, 241–244 (1964). https://doi.org/10.1007/BF02187456

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  • DOI: https://doi.org/10.1007/BF02187456

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