Zeolite amendement changes the properties of growing media. The effect depends on the rate and grading of the added zeolites. Growing media with powdered zeolite had rather higher water holding capacity over the entire measured water potential range. The best growth was recorded in growing media with powdered zeolite, especially in the amount of 40 kg/m3, where plants showed even better quality then in the commercial growing media. Plants of good marketable quality were also grown in growing medium with 50 kg/m3 of added granulated zeolite. The experiment showed that it is possible to use growing media amended with granulated zeolite with a lower price but only in quantities of 50 kg/m3 or less.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 7686009The process solves problem of recycling of EDTA and process waters after extraction of metal and organic pollutants contaminated soil. The method of EDTA precipitation in a pH gradient and treatment of process solutions using advanced oxidation processes was applied.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 3251622Acta agriculturae Slovenica is main scientific journal for the field of agriculture and environment in which results of research from these field in Slovenia and abroad are published
C.05 Editorial board of a national magazine
Despite intensive research, carbon cycle is still under-investigated and not fully understood for many ecosystems, especially the ones which are of minor direct importance in terms of food and wood production. Karst ecosystems can be included in this group of ecosystems. The study was conducted at the Podgorski Kras plateau (400 - 430 m.a.s.l.), which was in the past subjected to agriculture land abandonment, in the sub-mediterranean region of Slovenia (SW Slovenia). Within the study area two study sites were chosen: grassland and forest succession. At both sites, in July 2008, an open-path Eddy covariance (EC) was installed at 15 m and 2 m height for Succession site and Grassland site, respectively. Also Rs and other auxiliary measurements were performed. For the observed period (July 1th 2008 - November 30th 2012) no major differences were measured between Grassland site and Succession site concerning air temperature and precipitation. Concerning the EC data quality for the observed period, 59.7% and 33.7% of expected data have not been discarded for Succession site and Grassland site, respectively. On the average annual basis Succession site was net sink of carbon (NEE = -184 Ž 19 gCm-2y-1) while Grassland site was a source of carbon (NEE = 293 Ž 34 gCm-2y-1). Based on the eddy covariance measurements it can be concluded that overgrown area increased sink activity compared to the extensive grassland in observed period. After B4 correction was applied on our datasets cumulative NEE fluxes changed. For observation period Succession site shifted to weak sink (-28 gCm-2y-1) of carbon, while the Grassland site remained a source (456gCm-2y-1). Applying SISC correction NEE changed to -127 gCm-2y-1 and 362 gCm-2y-1 for Succession site and Grassland site, respectively. Our measurements showed the need for self-heating correction also for our ecosystems. It is more appropriate to use site specific self-heating correction based and developed on own measurements than those suggested by Burba et al. (2008). Concerning the Rs measurements it can be concluded that knowledge of temporal variability can be greatly improved with an automatic system. Corresponding measurements of soil temperature and moisture together with manual Rs measurements, improved the knowledge about spatial variability of Rs.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 770679In Slovenia, only 1.45% of agricultural land is irrigated, what is little, even the natural potential for irrigation is relatively good. The existing large irrigation systems are not optimally utilized; also the interest for the construction of new large irrigation systems is low. Model of permanent co-decision driven procedure provides a way of strengthening cooperation with key stakeholders. Depending on the situation are given guidelines and recommendations for further investment in existing irrigation systems and the basics of proper implementation and monitoring of irrigation and increase the efficiency of water use in crop production. The results of the project provide guidance in solving the problem of irrigation on the field of natural resources and socio-economic conditions. Project results are the basis for strengthening agricultural production potential and, consequently, to increase self-sufficiency in vegetables in Slovenia, taking into account the sustainable use of natural resources.
F.30 Professional assessment of the situation
COBISS.SI-ID: 7683449