Access the full text.
Sign up today, get DeepDyve free for 14 days.
Fischer Fischer, Niederbudde Niederbudde (1979)
Die exakte und schnelle Bestimmung von K/Ca‐Austauschkurven an Böden und die Automatisie‐rung ihrer AuswertungLandw. Forsch, 32
E. Niederbudde (1973)
Beziehungen zwischen K‐Fixierungsvermögen und Dreischicht‐Tonmineralen in Bodenprofilen auf LößJournal of Plant Nutrition and Soil Science, 135
Schwertmann Schwertmann, Deller Deller, Niederbudde Niederbudde (1976)
Langzeitwirkung einer Kalkung auf den Nährstoftzustand und die Basensättigung einer Braunerde aus GranitschuttLandw. Forsch, 29
E. Niederbudde (1979)
Unterschiede von Toneigenschaften in Tonstein der fränkischen Lias- und Doggerlandschaften und ihren Böden†Journal of Plant Nutrition and Soil Science, 142
Hartge Hartge (1961)
Die Erfassung der Kontinuität der groben Poren aus ihrem Anteil im Boden und dem PermeabilitätskoeffizientenZ. Pflanzenernähr. u. Bodenk, 94
Niederbudde Niederbudde (1979)
Unterschiede von Toneigenschaften in Tonstein der fränkischen Lias‐ und Doggerland‐schaften und ihren BödenZ. Pflanzenernähr. u. Bodenk, 142
Lagaly Lagaly, Weiss Weiss (1971)
Neue Methoden zur Charakterisierung und Identifizierung quel‐lungsfahiger DreischichttonmineraleZ. Pflanzen-ernahr. u. Bodenk, 130
Niederbudde Niederbudde (1973)
Beziehungen zwischen K‐Fixierungsvermögen und Dreischichttonmineralen in Bodenprofilen aus LößZ. Pflanzenernähr. u. Bodenk, 135
G. Lagaly, A. Weiss (1971)
Neue Methoden zur Charakterisierung und Identifizierung quellungsfähigen DreischichttonmineraleJournal of Plant Nutrition and Soil Science, 130
K. Hartge (1961)
Die Erfassung der Kontinuität der groben Poren aus ihrem Anteil im Boden und dem PermeabilitätskoeffizientenJournal of Plant Nutrition and Soil Science, 94
Changes of clay soils under organic and conventional farming Chemical, mineralogical and soil‐physical measurements were performed on clay soils, which were cultivated under conventional and organical production system for the last 14 years. Soils in the organic system (TNL soils) were loosened from 10–35 cm and organic residues and manure were incorporated into the 0–10 cm layer by a rotowator. Soils in the conventional system (TKL soils) were plowed to a depth of 22 cm. Humus and nitrogen reserve and the amount of mobile phosphate in the top soils of the TNL soils were higher than in those of the TKL soils. The exchangeable potassium in the top soil was higher in TKL soils than in TNL soils, whereas the organic system (TNL) showed a more equal distribution within top and subsoil. This observation was confirmed by measurements of the mobile potassium (ARo‐values). The contents of 2:1 layer silicates with expanded layers was lower in the top soil of TKL soils than in TNL soils. This can be explained by the reduced application of liquid manure (Gülle) and the missing application of potassium fertilizer on TNL soils. The layer charge of the expanded minerals ranged from ‐0.80 to ‐0.68 for the vermiculites, and from ‐0.45 to ‐0.35 for the smectites, per formula unit respectively. No influence on the percentage of the fine and mid pores was found. The amount of slow draining large pores (Ø 50‐10 μm) was higher in TNL soils than in TKL soils, only in a neighbouring pasture soil the proportion of these pore exceeded those of TNL soils. Measurements of pore continuity did not show such a clear difference between TKL and TNL soils, but was higher for TNL soils.
Journal of Agronomy and Crop Science – Wiley
Published: Apr 1, 1989
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.