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| Talgre, Liina; Roostalu, Hugo; Maeorg, Erkki; Lauringson, Enn. |
| In Nordic conditions, soils are frozen during winter, affecting the decomposition rates of crop residues. Hence, the decomposition rates of above- and underground biomass and the dynamics of the N and C released into the soil were studied in trials focused on green manure crops. The decomposition of the residue and N release from the residue varied among the five species of legume tested. There was a marked difference in decomposition rates between shoots and roots, which may also be explained by the differences in the chemical composition of the residue. The shoot residue decomposes rapidly and it serves as a source of N for the subsequent crop. The root residue decomposes more slowly and this had a positive effect in a crop rotation in the second year.... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Nutrient turnover; Farm nutrient management. |
| Ano: 2017 |
URL: http://orgprints.org/35242/1/Talgre_et_al_2017.pdf |
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| Madsen, Helena; Talgre, Liina; Eremeev, Vyacheslav; Alaru, Maarika; Maeorg, Erkki; Luik, Anne. |
| By inserting cover crops into organic cropping systems, the number and biomass of weeds decreased. Winter cover crops clearly have a suppressive effect on weeds by providing competition for light, water and space. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Composting and manuring Crop husbandry Crop health; Quality; Protection Weed management. |
| Ano: 2017 |
URL: http://orgprints.org/31254/3/Madsen_Winter%20cover%20crops_weeds_reviewed%20.docx |
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| Kuht, Jaan; Eremeev, Viacheslav; Talgre, Liina; Madsen, Helena; Toom, Merili; Maeorg, Erkki; Luik, Anne. |
| In 2008 an experiment was set up on the field in Eerika experimental station (Estonian University of Life Sciences) as a 5-field crop rotation: red clover, winter wheat, pea, potato and barley undersown with red clover. The objective of the study was to measure the content of weed seeds in the soil and to evaluate the diversity of the species at the end of the period of converting to organic production. In conventional farming systems without fertilizer (Conv I) and conventional farming with mineral fertilizer (Conv II) herbicides were used for weed control. All the crops in Conv II system received P 25 kg ha-1 and K 95 kg ha-1, but the application rates of mineral nitrogen fertilizer differed. In organic systems (Org I – organic farming based on winter... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Biodiversity and ecosystem services; Weed management. |
| Ano: 2016 |
URL: http://orgprints.org/32504/1/Kuht%20et%20al%202016.pdf |
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