INFLUENCE OF REDUCED SOIL TILLAGE AND NITROGEN FERTILIZATION AT WINTER WHEAT AND SOYBEAN GRAIN YIELDS AT BARANYA HIPOGLEY SOIL TYPE
During the three years (2006/2007-2008/2009) stationary research of reduced soil tillage had been conducted for winter wheat and soybean, at marsh gley (hipogley) hydromeliorated soil type of Baranya. The research has been conducted with eight soil tillage treatments and three nitrogen fertiliz...
| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Faculty of Agrobitechnical Sciences Osijek
2012-12-01
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| Series: | Poljoprivreda |
| Subjects: | |
| Online Access: | http://161.53.194.251/~poljo/upload/publications/poljoprivreda-18-2-12.pdf |
| Summary: | During the three years (2006/2007-2008/2009) stationary
research of reduced soil tillage had been conducted
for winter wheat and soybean, at marsh gley
(hipogley) hydromeliorated soil type of Baranya. The
research has been conducted with eight soil tillage treatments
and three nitrogen fertilization treatments set up in
split-plot design in four repetitions. Soil tillage treatments
consisted of four continued soil tillage systems for both
crops: OR-conventional soil tillage, TR-multiple diskharrowing,
RT-chiseling and diskharrowing, NT-no-tillage
and four discontinued soil tillage systems: OsTp-OR for
soybean TR for w. wheat in the forthcoming season:
OpTs-OR for w.wheat TR for soybean in the forthcoming
season, NpOs-NT for w. wheat OR for soybean in forthcoming
season: NsOp-NT for soybean OR for w. wheat in
forthcoming season. Nitrogen fertilization treatment had
three levels of applied nitrogen: for w.wheat G-1=120,
G-2=150, G-3=180 kg N ha -1 and for soybean G-1=35,
G-2=70, G-3=110 kg N ha-1. Weather conditions had
significant aberrations during 2006/2007 and 2008/2009
(extremely drought seasons), whereas 2007/2008 season
was moderately humid. The high and stabile average winter
wheat grain yields had been achieved, with statistical
difference among years of the research, whereas yield
decreased by applied soil tillage systems in the order as
follows: RT (7.78) > NsOp (7.75) > OR (7.74) > OpTs
(7.62) > TR (7.63) > OsTp (7.58) > NpOs (6.95) > NT
(6.92 t ha-1), with NpOs and NT treatments recorded
significantly lower yields in comparison with OR treatment.
According to three year averages, normal and
relatively stabile soybean grain yield has been achieved,
with significant difference among years, whereas soil tillage
systems showed the following decrease order: NpOs
(2.62) > OR (2.58) > OsTp (2.56) > NsOp (2.49) > TR
(2.46) = RT (2.46) > NT (2.42) > OpTs (2.35 t ha-1). In
comparison with OR treatment, only OpTs had significantly
lower soybean grain yield. The study showed, with
the optimum of nitrogen fertilization, a very successful
application of reduced soil tillage systems in the winter
wheat and soybean production. |
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| ISSN: | 1330-7142 1848-8080 |