Düngung Der Kulturpflanzen: Erste Hälfte
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Seit dem Erscheinen des zweib�ndigen Standardwerkes von F. HONCAMP, "Handbuch der Pflanzenern�hrung und D�ngerlehre", sind mehr als drei ig Jahre vergangen. Bei den st�rmischen Fortschritten auf allen Gebieten der Natur- wissenschaften, insbesondere der Chemie, Pflanzenphysiologie, Biochemie, Bodenkunde und Technologie, ist dieses zur Zeit seines Erscheinens so aus- gezeichnete Handbuch nat�rlich l�ngst veraltet. Zweifellos besteht heute ein dringendes Bed�rfnis nach einem �hnlichen Werk. Wenn wir von dem urspr�nglichen Plan abgekommen sind, das HONCAMP- sche Handbuch in neuer Auflage zu bearbeiten, so vor allem deswegen, weil die tiefgreifende Entwicklung auf diesem Gebiet eine v�llig neue Gestaltung des Werkes geboten erscheinen lie . Es gliedert sich nun in drei B�nde. Band I behandelt im wesentlichen die physiologischen Grundlagen der Pflanzenern�hrung. Er enth�lt eine ausf�hrliche und systematische Darstellung der eigentlichen Ern�hrungsphysiologie. Auf eine Er�rterung der allgemeinen pflanzen- physiologischen Grundlagen konnte dabei verzichtet werden, weil im RUHLAND- sehen "Handbuch der Pflanzenphysiologie" ein umfassendes und modernes Nach- schlagewerk zur Verf�gung steht. Band II besch�ftigt sich mit dem Boden und den D�ngemitteln. Unter Ber�cksichtigung der modernen Agrikulturchemie haben wir das heutige Wissen �ber den Boden als Standort und N�hrstoffquelle der Pflanze unter den Verh�lt- nissen der landwirtschaftlichen Praxis und des Gartenbaues bzw. des Forstwesens systematisch zusammengefa t. Die folgenden Kapitel befassen sich mit der Beschreibung und Herstellung der verschiedenen Wirtschafts- und Handels- d�ngemittel. Gerade auf diesem Gebiet bestehen in der wissenschaftlichen Literatur erhebliche L�cken, da keinegr� eren Lehr-oder Handb�cher vorhanden sind, die sich eingehender mit der Technologie der D�ngemittel und der D�ngung besch�ftigen.
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Rich Dad Poor Dad: What the Rich Teach Their Kids about Money That the Poor and Middle Class Do Not!
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