Bodengefüge, Wurzelentwicklung und Wurzelfunktionen

Helal, Helal M.

doi:10.1002/jpln.19911540603

Cited by 10 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Einen sehr großen Einfluss u¨bt hierbei neben der Bodenart und dem Bodentyp bisweilen auch der Strukturzustand des Bodens aus. So zeigen verschiedene Untersuchungen (Harrach 1978;Bohne 1988;Keita und Steffens 1989;Helal 1991), dass auf Standorten mit suboptimaler Bodenstruktur versta¨rkt Anomalien im Wurzelwachstum zu beobachten sind, die wiederum erhebliche Wachstumsdepressionen verursachen ko¨nnen. So zeigen auch die Untersuchungen von Ishaq et al (2003), dass die Durchwurzelung von beispielsweise Mais stark von der jeweiligen Bodenbearbeitungsintensita¨t abha¨ngig ist.…”

Section: Introductionunclassified

Zur Wirkung von Kalium auf ausgewählte bodenphysikalische Eigenschaften und den Wurzeltiefgang landwirtschaftlicher Kulturpflanzen

Damm

Hofmann

Gransee

et al. 2013

Archives of Agronomy and Soil Science

View full text Add to dashboard Cite

Soil physical properties and root penetration (root depths, root growth rate) of various crops (sugar beet, corn, spring barley, winter barley) were studied in a long-term K-fertilization trial on loess chernozem in Bernburg, Germany. Over the last 14 years, annual K/Mg applications in the treatments were 0/0; 83.0/0; 41.5/4.5; 83.0/9.0; 124.5/13.5 kg ha 71 , respectively. In comparison with the unfertilized treatment, continuous K supply led to an increase in soil water content within the whole range of water retention function up to the permanent wilting point (pF 4.2). Higher soil K concentrations increased coarse pore volume and water capacity at comparable dry bulk density. At the highest K level (winter wheat), the storage capacity for plant-available soil water (available water capacity) of the topsoil (0-30 cm soil depth) increased by 6 mm (relatively 9%) in comparison with the unfertilized treatment. A favourable soil structure at the higher K level enhanced plant emergence and development in the early growth stages. This advance in plant development improved the root penetration of plough pan as well as the complete exploitation of the effective root zone. Plants with different root systems (tap roots or fasciculated root systems, respectively) showed similar response to increased K supply. Root growth rate was affected by annual weather conditions. K fertilization increased root growth rate within the first weeks after emergence, particularly in sugar beet and corn, but also in winter barley. The difference in spring barley was only significant in 2010. ZusammenfassungIn einem K-Steigerungsversuch (ja¨hrliche K/Mg-Du¨ngung in kg ha 71 : 0/0; 83,0/0; 41,5/4,5; 83,0/9,0; 124,5/13,5) auf einem Tschernosem in Bernburg (21,4% Ton 73,3% Schluff, 1,5% C org ) wurden nach 14 Versuchsjahren ausgewa¨hlte bodenphysikalische Eigenschaften und das Durchwurzelungsverhalten (Wurzeltiefgang, Durchwurzelungsgeschwindigkeit) von verschiedenen Fruchtarten (Zuckerru¨ben, Ko¨rnermais, Sommer-und Wintergerste) untersucht. Dabei verursachte die systematische K-Zufuhr im Vergleich zu den ungedu¨ngten Referenzfla¨chen einen

show abstract

Section: Introductionunclassified

Zur Wirkung von Kalium auf ausgewählte bodenphysikalische Eigenschaften und den Wurzeltiefgang landwirtschaftlicher Kulturpflanzen

Damm

Hofmann

Gransee

et al. 2013

Archives of Agronomy and Soil Science

View full text Add to dashboard Cite

show abstract

The Influence of Compaction on Soil Structure and Functions in Forest Sites

Hildebrand

Schack‐Kirchner

2002

Modern Trends in Applied Terrestrial Ecology

View full text Add to dashboard Cite

Ecological effects of soil compaction and initial recovery dynamics: a preliminary study

Wilpert¹,

Schäffer²

2005

Eur J Forest Res

View full text Add to dashboard Cite

Skid trails of regular harvest operations with time delays up to 24 years between tracking and examination were investigated in order to characterize the status of recovery of essential soil functions. The study was focused on the ability of soils to serve as an effective rooting space. The gas diffusion coefficient and the fine root distributions of comparable sensitive silty loams were used to describe the disturbances of soil functions still detectable after decades. Tracking with heavy loaded machines severely reduced the soil aeration and in consequence the ability of the soil to act as a rooting space. Reduction of gas diffusivity and rooting was found on the whole skidding trail area and even expanded to the close vicinity of the margin zone. Up to 14 years after machine impact, gas diffusion coefficients and root densities beyond 4 cm depth under wheel tracks showed no signs of restoration. Soil aeration and root densities comparable to the control plot were found in the top soil layer 18 years after tracking at the site Ettenheim. At that location 24 years after machine impact, significantly reduced root densities occurred only in soil depths beyond 54 cm. In the long run, only concentration of machine traffic on permanent skid trail systems guarantees an adequate soil preservation. This applies especially under Middle European site conditions and management practices. This prescription must be underlined in guidelines for machine use in forests.

show abstract

Bodengefüge, Wurzelentwicklung und Wurzelfunktionen

Abstract: Vortrag bei der gemeinsamen Sitzung der Kommissionen 1. Ill und IV der DBG am 9. Oktober 1990 in Braunschweig Z. Pflanzenerndhr. Bodenk.. 154,403407 (1991) BVCH Verlagsgesellschaft mbH. W-6940 Weinheim. 1991 0044-3263/91/0612W3 S 3.50 + .25m

Cited by 10 publications

References 20 publications

Zur Wirkung von Kalium auf ausgewählte bodenphysikalische Eigenschaften und den Wurzeltiefgang landwirtschaftlicher Kulturpflanzen

Zur Wirkung von Kalium auf ausgewählte bodenphysikalische Eigenschaften und den Wurzeltiefgang landwirtschaftlicher Kulturpflanzen

The Influence of Compaction on Soil Structure and Functions in Forest Sites

Ecological effects of soil compaction and initial recovery dynamics: a preliminary study

Contact Info

Product

Resources

About