The content of some micronutrients in rendzina soil cultivated using different tillage systems and catch crops
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Date
2011
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Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach
Abstract
Description
The research was carried out in 2006/2007–2008/2009,
using the experiment started in 2005 on Bezek experimental farm,
the property of University of Life Sciences in Lublin. The experimental
field was set on a medium-heavy mixed rendzina. The aim
of the research was to estimate the impact of different tillage systems
and different catch crops in spring wheat monoculture on the
levels of Zn, Cu, Mn, Fe on topsoil.
Two-factor field experiment was established with split-plot
method in four replitcations. The first factor included plough tillage
(A) and two variants of conservation tillage with autumn (B)
and spring disking (C) of catch crops. The second factor covered
four methods of field reclamation in spring wheat monoculture in
the form of undersown crops (red clover, westerwold ryegrass)
and stubble catch crops (lacy phacelia, white mustard). Fields
without catch crops were the control treatments.
Plough soil tillage system increased the level of Cu, Mn, and
Fe in arable soil in comparison with both methods of conservation
tillage. The content of zinc was significantly lower on conservation
tillage treatments with autumn catch crop incorporation than on the
treatments with plough soil tillage, and with conservation tillage
involving spring catch crops disking. The highest level of zinc was
found on the treatments with red clover seeding, a copper and iron
– on the treatments with red clover and lacy phacelia, and manganese
– in the control plots.
In spring, the levels of copper, manganese and iron in the soil
were significantly higher than in autumn. As for zinc, its level in
spring was significantly lower than in autumn. The levels of copper
and iron in soil were significantly increasing, and the content
of zinc – decreasing with every consecutive year. The content of
micronutrients in the soils of 0–20 cm deep did not exceed their
natural level, characteristic of this type of soils.
Keywords
tillage systems, catch crops, micronutrients
Citation
Polish Journal of Agronomy
2011, 4, 7-11