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| Registros recuperados: 10 | |
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| Parikka, Päivi; Rämö, Sari; Hietaniemi, Veli; Alakukku, Laura; Känkänen, Hannu; Salo, Yrjö. |
| Direct drilling and reduced tillage: - may increase T-2/HT-2 -producers, especially on oats - may decrease DON-producers, especially F. culmorum > is it long lasting effect? - an increase F. avenaceum infection in humid growing seasons - effect on F. culmorum - less f. poae -infection especially on oats -effect on F. graminearum: -not detected, the species is quite common but perithecia are not often detected -F. graminearumis most likely increasing-changes the situation. Control of mycotoxin producers in reduced tillage: -fungicide treatments not effective to control Fusariumand mycotoxins -crop rotation important -resistant cultivars |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2011 |
URL: http://orgprints.org/19581/1/parikka.pdf |
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| Alakukku, Laura; Ristolainen, Antti; Sarikka, Ilkka; Hurme, Timo. |
| Surface water ponding and crop hampering due to soil wetness was monitored in order to evaluate the effects of conservation tillage practices and perennial grass cover on soil infiltrability for five years in situ in gently sloping clayey fields. Thirteen experimental areas, each having three experimental fields, were established in southern Finland. The fields belonged to: autumn mouldboard ploughing (AP), conservation tillage (CT) and perennial grass in the crop rotation (PG). In the third year, direct drilled (DD) fields were established in five areas. Excluding PG, mainly spring cereals were grown in the fields. Location and surface area of ponded water (in the spring and autumn) as well as hampered crop growth (during June-July) were determined in... |
| Tipo: Journal paper |
Palavras-chave: Soil tillage. |
| Ano: 2010 |
URL: http://orgprints.org/18182/1/alakukku.pdf |
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| Regina, Kristiina; Simojoki, Asko; Alakukku, Laura; Silvennoinen, Hanna; Dörsch, Peter; Keller, Thomas. |
| Compaction occasionally increased N2O in soil air. No large differences in soil air composition, N2O emissions or moisture content were found between the treatments. The N2O concentrations at 15, 30, 50 and 70 cm depths correlated positively with the emission of N2O from the soil in both fields (r=0.4-0.7***). The subsoil O2 concentrations correlated negatively with N2O emission, but only at the Finnish site. The results suggest that subsoil compaction does not significantly increase N2O emissions from these soils 15-30 years after compaction. This may indicate a minor role of subsoil in the production of N2O compared with topsoil. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil. |
| Ano: 2011 |
URL: http://orgprints.org/19576/1/Regina.pdf |
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| Turtola, Eila; Alakukku, Laura; Uusitalo, Risto; Kaseva, Antti. |
| Conservation tillage practices were tested against autumn mouldboard ploughing for differences in physical properties of soil, surface runoff, subsurface drainflow and soil erosion. The study (1991 -2001) was performed on a gently (2%) sloping clayey soil of southern Finland, with two replicates of the tillage treatments on 0.5 ha plots. The annual shares of surface runoff of the total flow (surface runoff + subsurface drainflow) were 8–42% for ploughing (depth 20–23 cm), 36–66% for shallow autumn stubble cultivation (depth 5–8 cm) and 36–82% for soil left untilled over winter. Surface runoff increased with decrease in the tillage intensity, and in line with the values of depressional water storage, macroporosity and saturated hydraulic conductivity.... |
| Tipo: Journal paper |
Palavras-chave: Environmental aspects; Soil. |
| Ano: 2007 |
URL: http://orgprints.org/16898/1/turtola.pdf |
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| Registros recuperados: 10 | |
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