Winterkilling in puresown ryegrass, the importance of fungal pathogens and possibilities for their control I. Results from field trials with natural infection Rotten plants, incomplete stands, a reduced number of shoots and a decline in dry matter yield were observed after hibernations of perennial...
Die unter dem Einfluß von Feuchte- und/oder Temperaturänderungen auftretenden Flächen- und damit Spannungsänderungen des Leders bewirken eine Deformation auch des Wafers. Dank dessen bekannter Charakteristik ist es möglich, die Spannungsänderungen des Leders quantitativ zu beschreiben...
This demonstrates that the influence of fertilizers on forest insects can not be evaluated reliably except on the basis of a sequence of infestation surveys including observations on the influence of (possibly) density governing factors.doi:10.1111/j.1439-0418.1964.tb02936.xWalter Thalenhorst...