SVIBOR - Papers quoted in CC - project code: 4-99-046
MINISTRY OF SCIENCE AND TECHNOLOGY
Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr
SVIBOR - Collecting Data on Projects in Croatia
Papers quoted in Current Contents on project 4-99-046
Quoted papers: 8
Other papers: 95
Total: 103
Title: POTASSIUM AND AMMONIUM ADSORPTION IN SOILS IN CONDITIONS
OF VARYING MOISTURE CONTENTS
- Authors:
- Romić, Marija (154196)
Number: 5-6
ISSN: 0002-1954
Volume: LVI
Year: 1994
Pages: from 371 to 380
Language: hrvatski
Summary: The Langmuir model was employed to describe the
influence of different moisture content on potassium and ammonium
adsorption in soils. An alteration in soil/solution ratio during exchange
brought about the greatest change of adsorption parametar Vm in vertic
amphigley for both potassium and ammonium, whereas maximum adsorption
values remained constant. The Langmuir model predicted that ammonium
concentration in the soil solution is not dependent upon the soil water
content, but the level of ammonium in soil.
The effect of moisture content on maximum adsorption capacity values
increases with decreasing of clay content, as result of diffusion effect
within double diffusion layer.
Title: EFFICIENCY OF DETAILED DRAINAGE SYSTEMS IN THE SAVA RIVER
VALLEY
- Authors:
- Petošić, Dragutin (87396)
Journal: Poljoprivredna znanstvena smotra
Number: 1
ISSN: 0370-0291
Volume: LIX
Year: 1994
Pages: from 41 to 58
Number of references: 20
Language: hrvatski
Summary: The object of the paper is to point the efficiency of the
detailed drainage system in the narrower basin area of the Sava River
Valey, which holds one third of all the systems executed in the Republic of
Croatia. The efficiency of different variants of drainage system was
studied on the basis of preliminary, stationary and supplementary
investigations, carried out on six experimental fields and two additional
locations from 1989 to 1991. Work was focused on investigating the actual
moisture fluctuation, moisture regime in drained soils, intensity and
fluctuation of drainage discharge and balanching of the solum water to the
depth of 100 cm.
Investigation results and the corresponding indicators obtained served
to evaluate the performance of the studied drainage systems in the Sava
Valley.
Guidelines are provided for revitalization of the existing and
recommendations for execution of the future systems of detailed drainage in
the Sava Valley.
Title: DURABILITY OF THE IMPACT OF DRAIN TRENCHES ON DRAINED
VERTIC AMPHIGLEY IN THE SAVA RIVER VALLEY
- Authors:
- Petošić, Dragutin (87396)
Journal: Hrvatske vode
Number: 5
ISSN: 631 -6262
Volume: II
Year: 1994
Pages: from 285 to 291
Number of references: 9
Language: hrvatski
Summary: About 33.000 ha of drained agricultural areas in the
narrower basin to the Sava Valley lie on vertic amphigley soils.
Efficient drainage of water surplus, primarily stagnating groundwater, by
the underground pipe drainage system greatly depends on the durability of
drain trench effect. Two-and threeyear investigations, carried out on six
locations in the Sava basin (Slavonski Brod, Nova Gradiška, Popovača,
Ivanić Grad, Oborovo and Zaprešić), confirmed very poor efficiency of drain
trenches on drained vertic amphigley. Especially poor drain trench
performance was determined in the subsoil horizon, at an average depth of
about 30-60 cm. The so called "vault" was formed in that parth of the
trench, with very unfavourable physical - hidraulic soil properties and
water -air regime. This condition in the drain trench zone has an expressly
adverse effect on efficient drainage, that is, discharge of the prevailing
stagnant groundwater towards drainage pipes and, thus, on the overall
efficiency of the drainage system. Due to the very poor efficiency of drain
trenches on vertic amphigley soils on Holocene clay in the Sava Valley,
most of the existing drainage systems require application of appropriate
agroameliorative measures.
Keywords: Drain trench effect, vertic eugley, hidraulic filter, mechanical soil resistence, vault, soil compaction.
Title: REVITALIZATION OF DRAINAGE SYSTEMS AT THE NOVA GRADIŠKA
AGRICULTURAL PLANT
- Authors:
- Petošić, Dragutin (87396)
- Šimunić, Ivan (117184)
- Stričević, Ivo (45215)
Journal: Poljoprivredne aktualnosti
Number: 1-2
ISSN: 0350-6622
Volume: XXX
Year: 1994
Pages: from 265 to 275
Language: hrvatski
Summary: Investigations carried out in the area of the Nova
Gradiška Agricultural Plant in the 1989-1991 period were aimed at
determining the efficiency of the installed drainage systems.
Investigations involved permanent measurement of the surface and ground
water regime, actual soil moisture dynamics and drainage discharge.
Detailed pedological investigations were conducted several times during
the trial period in order to determine the main physical and shemical
properties of the drained soils.
Unsatisfactory efficiency of drainage systems was recorded on most of
the drained areas, especially those on vertic amphigley.
As a consequence of such a state, frequent occurrences of wet soil
phase, water stagnation on soil surface and marked oscillations of the
yields of crops grown were recorded.
Intensive cropping is made very difficult by such conditions, so
revitalization of a part of the drainage systems in this area is
indispensable.
Based on the investigations carried out, basic indicators of the needs
for and potentials of revitalization of the drainage systems were
determined.
The dominant factors in this respect are the drain trench performance,
surface systematization of productions areas, supplementary
agroameliorative and hydrotechnical practices, maintenance and rational
utilization of installed drainage systems.
Keywords: Drainage system, drained area revitalization unsatisfactory efficiency, yield oscillations, wet soil phase, intesive cropping, rational utilization.
Title: THE APPLICATION DRAINAGE IN TOBACCO GROWING IN THE
VIROVITICA AREA
- Authors:
- Stričević, Ivo (45215)
- Petošić, Dragutin (87396)
Journal: IZVJEŠĆE O ZNANSTVENOM STRUČNOM RADU U 1994. GODINI
Number: 1
ISSN: 1330-139X
Volume: 20
Year: 1995
Pages: from 127 to 135
Number of references: 22
Language: hrvatski
Summary: In this area tobacco is grown on varieus soils, more or
less suitable for tabacco growing. It has been established, by research
carried out over a number of years, which soils are for tabacco growing and
which have relatively small limitations (insufficient nutrients and
insufficient water during the vegetation period). It has also been
established which soils have serious limitations, primarily a high degree
of compactness and impermeability to water.
Since tobacco is a culture that is higly sensitive to excess moisture,
these soils require hydromeliorations or agromeliorations. After the
applications of drainage with a built-in mechanical filter and deep
loosening of such soils, the research carried out has shown that tabacco
may be grown there successfully.
Title: WATER REGIME IN THE LAKE OF VRANSKO JEZERO AND ASSESSMENT
OF WATER QUALITZ FOR IRRIGATION
- Authors:
- Romić, Davor (116262)
Journal: Poljoprivredna znanstvena smotra
Number: 1
ISSN: 0370-0291
Volume: 60
Year: 1995
Pages: from 27 to 44
Number of references: 34
Language: hrvatski
Summary: Investigations have been carried out for several years in
orderto define water regime of the lake of Vransko Jezero, and on the basis
of the collected parameters and by classification, suitability of the lake
water for irrigation purposes has been assesed. The results show that the
water level in the lake varied by 150 cm during the research period
(1988-1992). For some time in 1990 the water level was below zero, while at
the same time the sea level was higher than the level of the like, and
highest concentration of salt in the lake water was recorded. This
indicates that the source of salt in the lake water is sea water. The
predominant ions in the lake water are Na+ and Cl- which, on the average,
constitute 90 percent of all analyzed and cathions. Variations of the lake
water level are accompanied by variations of the salt concentration. By
application of two classifications the average quality of water in Vransko
Jezero has been assessed as unsuitable for irrigation. The possible effects
of irrigation by the lake water in steady-state conditions were assessed by
application of the "Watsuit" model.
Keywords: Irrigation, water quality, regime, cations, anions, SAR, classification.
Title: REGULATION OF SURPLUS SOIL WATER FOR EFFECTUATION OF
SUSTAINABLE AGRICULTURE
- Authors:
- Tomić, Franjo (50020)
- Petošić, Dragutin (87396)
- Šimunić, Ivan (117184)
Journal: Poljoprivredne aktualnosti
Number: 3-4
ISSN: 0350-6622
Volume: XXX
Year: 1994
Pages: from 295 to 310
Number of references: 10
Language: hrvatski
Summary: The trial was set up on the experimental plots Potok and
Jelenščak and involved investigation of the influence of drainage on water
surplus regulation in pseudogley-gley soils, aimed at effectuation of
sustainable agriculture. It was astablished on the experimental plot Potok
that the combined detailed drainage system (pipe drainage with built-in
hidraulic filters and deep loosening of the soil) effectively reduced the
groundwater level to a depth acceptable for field crop production. Positive
effects were also determined of detailed drainage on soil moisture
fluctuation in the rhizosphere. Thus, for example, optimum soil moisture,
between the retention capacity and lentocapillary moisture, was recorded in
most cases in the 0-60 cm horizon during the investigation period
(1989-1991). Satisfactory intensity of the drainage discharge from the
installed drainage pipes was also determined, the maximum values of which
(1,60 l/s/ha) exceeded the rates of 1,38 l/s/ha forseen by the Project.
Positive linear correlation was determined in soil moisture fluctuation
within the solum, to s depth of 100 cm, as well as beetwen water levels in
shallow and deep piezometers. Negative linear cerrelation was obtained
between the soil moisture in the solum, to a depth of 100 cm, and the water
levels in shallow and deep piezometers. The three-year water balancing
showed that the existing detailed drainage system at Potok generally
resulted in successful drainage of all water surplus that occurred that
period. Analyses if the nitrate and ammonium forms of nitrogen in drainage
water (experimental plot Jelenščak)point to the dependence of their
concentration on the rates and intensity of fertilization rather than on
drainage practices. Satisfactory yields of major field crop were obtained
on the studied hydroameliorated experimental plots Potok and Jelenščak
(6.0/6.7 t/ha wheat, 9.4-12.9 t/ha maize, 4.4. t/ha oats, 3.25 t/ha soybean
and 2.4 t/ha oil rape. Censequently, sustainable agriculture can be
achieved on drained hydromorphic soils.
Title: ROLE OF MELIORATION IN DEVELOPMENT CROATIAN AGRICULTURE
- Authors:
- Tomić, Franjo (50020)
- Marušić, Josip (10930)
Journal: Poljoprivredne aktualnosti
Number: 3-4
ISSN: 0350-6622
Volume: 30
Year: 1994
Pages: from 413 to 420
Number of references: 9
Language: hrvatski
Summary: Melioration include every measures which improve properties
of soil and conditions for firming. In this measures include:
hydromeliorations measures (defence from flood and drainage) agricultural
measures (mole drainage, deep loosing, deep ploughing, calsification,
melioration manure) and irrigation. With melioration can achieve optimal
water regim in the soil and intensive growe agricultural crops. Drainage
use for regulation excess water, but irrigation use for compensation lock
water. This paper is covsidering just drainage and irrigation and there
importent in develop oure agriculture.
Keywords: Melioration, properties of soil, flood, drainage, irrigation.
Information: svibor@znanost.hr
