Browsing Naturwissenschaften, Mathematik und Informatik by Advisor "Vlek, Paul Prof. Dr."
Now showing items 1-6 of 6
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Soil N mineralization dynamics as affected by pure and mixed application of leafy material from leguminous trees used in planted fallow in Brazil
(2002-12-13)In Amazon human activities such as slashing and burning converted large areas of primary forest to intermittently used agricultural land. Thus, the fallow vegetation plays an important role ... -
Microbiological indicators for quality of soils at various stages of degradation in the forest-savanna-transition zone, south-western Nigeria
(2002-03-15)Soil quality or soil health has emerged as the central concept for examining and integrati1lg relationships and functions among various biological, chemical and physical parameters of soils ... -
Einfluß landwirtschaftlicher Flächenvorbereitung auf die Dynamik des Wurzelsystems und die oberirdische Regeneration der Sekundärvegetation Ostamazoniens, Para, Brasilien
(2002-03-15)Summary Shifting cultivation is wide spread in the tropics. The productivity of this traditional land use system can only be sustained if the regeneration of recurrent fallow vegetation is also ensured. During the last few ... -
Effect of (vesicular-) arbuscular mycorrhiza on survival and post vitro development of micropropagated oil palms (Elaeis guineensis Jacq.)
(2002-02-08)The oil palm (Elaeis guineensis Jacq.) is one of the most important plantation crops in Indonesia, the acreage is increased for about three times up to 2 million ha in the last 10 years. ...