Three agricultural implements (soil preparation machine, disk harrow and circular self-cleaning harrow) were used in four repetitions. The surface area of the field was 19530 m2 and it was divided into twelve plots of 1627,5 m2 each. Statistically significant differences in the fuel consumption occurred between the disk harrow and the soil preparation machine and between disk harrow and circular self-cleaning harrow; there were no statistical differences between circular self-cleaning harrow and soil preparation machine. It was proved that the highest consumption occurs when using disk harrow (20,15 l/ha) and the least fuel consumption when using circular self-cleaning harrow (11,05 l/ha. Least time was used with modern circular self-cleaning harrow (93,16 min./ha) and most with disk harrow (208,07 min./ha). Three agricultural implements (soil preparation machine, disk harrow and circular self-cleaning harrow) were used in four repetitions. The surface area of the field was 19530 m2 and it was divided into twelve plots of 1627,5 m2 each.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 3147820On a heavy soil of the parcel ‘Center’ the alternative soil tillage with CP has being applied for five years, whereby one half of the parcel is still under MP. The measurements of horizontal resistance were performed with a horizontal penetrometer designed at the Agricultural institute of Slovenia, which sampled data at 50 Hz during driving on the field, so on the average 4476 points were taken. From each part of the parcel data were collected from 15, 25 and 35 cm layer depth on 375 m long experimental parcel. The results of horizontal penetrometer showed on the average lower resistance in MP15 (40.98 Ncm-2) than in CP15 (45.10 Ncm-2) and in MP25 (91.66 Ncm-2) than in CP25 (122.47 Ncm-2). In the 35 cm depth the soil resistance was higher in MP (123.65 Ncm-2) than in CP (115.99 Ncm-2) probably because of the hardpan.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 3783784The study was conducted at three locations in the Savinjska region of Slovenia, where soil is contaminated with heavy metals due to the zinc industry (Cinkarna Celje). In Ponikva the soil to a depth of 30 cm contains 0.8 mg kg-1 Cd, 32.2 mg kg-1 Pb and 86 mg Zn kg-1, in Medlog 1.4 mg kg-1 Cd, 37.4 mg kg-1 Pb and 115 mg kg-1 Zn and in Skofja vas 10.9 mg kg-1 Cd, 239.7 mgkg-1 Pb and 1356 mg kg-1 Zn. The pH at the selected sites was between 7.3 and 7.6. In the beginning of September 2006 two hybrids of Brassica napus L. var. napus, PR45 D01 and PR46 W31 suitable for production of biodiesel obtained from Pioneer Seeds Holding GmbH, were sown. After 96 days juvenile and after 277 days mature plants were collected. Parts of plants (root, shoot and seed) were separated and Cd, Pb, Zn, Mo and S determined by ultra-trace ICP-MS. We compared the uptake of Cd, Pb, Zn, Mo and S in different parts of juvenile and mature plants of the two different hybrids, TF (translocation factor), BAF (bioaccumulation factor) and PP (phytoextraction potential) were calculated. The mature hybrid PR46 W31 had higher shootžroot ratio and higher PP for metals (Cd, Pb and Zn) and lower PP for the micronutrient (Mo) and macronutrient (S) on the polluted site. The study demonstrated the potential use of oilseed rape on multiply polluted soils for production of 1st and 2nd generation biofuels. The potential restoration of degraded land could also disburden the use of agricultural land.
F.02 Acquisition of new scientific knowledge
COBISS.SI-ID: 1116886