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| Böhm, H.; Fittje, S.. |
| The standards of organic farming require the use of organically grown seeds in organic potato farming. Presumably the use of conventionally grown seeds under exceptional circumstances will end in 2003. Only organically grown seeds can be used thereafter. Therefore, it is important to check alternatives for organic potato seed production, which will reduce the cultivation risk, guarantee a high quality of seed potatoes (virus-free and healthy seed), and increase the fraction of marketable potatoes. On 7 farms in Northern Germany (4 sites in the coastal region (Schleswig-Holstein) and 3 sites in the inland region (Lower Saxony)) the green crop lifting (GCL) at two different dates was checked against the traditional process (haulm cutting) and a control plot... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Root crops Breeding; Genetics and propagation. |
| Ano: 2002 |
URL: http://orgprints.org/676/1/676%2Dboehm%2Dfittje%2D2002%2Dgreen%2Dcrop%2Dlifting.pdf |
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| Saucke, H.; Juergens, M.; Döring, Th. F.; Lesemann, D.E.; Fittje, S.; Vetten, H.-J.. |
| The effect of sowing date on aphid infestation and the incidence of aphid-transmitted viruses were investigated in organically managed, small-scale field experiments with two faba bean cultivars over 3 years (2002–04). As an additional factor, strawmulchwas applied in 2 of the 3 years shortly before the start of vector activity in May. Virus incidence was determined using enzyme-linked immunosorbent assay and immunoelectron microscopy. Aphid flight activity was monitored using standard yellow water traps. Bean colonising aphids were assessed throughout the vegetation period by counting the number of plants infested with Acyrthosiphon pisum, Megoura viciae and Aphis fabae. Pea enation mosaic virus and bean yellow mosaic virus were the most abundant... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds Crop health; Quality; Protection. |
| Ano: 2009 |
URL: http://orgprints.org/20013/1/2008.Saucke_et_al.AAB.pdf |
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