|
|
|
|
|
| Weinhappel, Manfred; Riepl, Ernestine. |
| Common Bunt (Tilletia caries) is a mainly seed borne disease and causes high losses in organic wheat and spelt production. Due to the basic role of seed health in disease prevention, seed quality aspects have to be focussed strictly in organic farming. In the scope of these studies, Tilletia results of 1291 wheat seed lots and 298 spelt wheat lots obtained from officially organic seed production from 2000 to 2012 have been analysed. The data indicated significantly the increasing spread of Tilletia caries in seed production in the last years, nevertheless in 2012 a high rate of more than 90% of the tested lots still corresponds to the requirements for untreated seed according to the Austrian Seed Regulations (threshold level 10 spores/kernel). As the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding; Genetics and propagation. |
| Ano: 2013 |
URL: http://orgprints.org/21589/1/21589_weinhappel.pdf |
| |
|
|
| Weinhappel, Manfred; Leonhardt, Charlotte; Hartl, Dr. Wilfried; Diethart, Ivoneta. |
| In the scope of a research project, official data from the certification of organic seed in Austria from 1999 to 2007 were analysed to determine the most important factors effecting seed quality and leading to rejection of certification. Data from 4684 seed multiplication fields and 3262 seed lots were analysed. Weed seeds and wild oats (Avena fatua) have little effect on the quality of finished seed due to highly effective seed processing plants and risk-based seed testing. In cereal seeds the most frequent reason for rejection of certification in the category Other Seeds by Number is Other Cereal Seeds. An important criterion resulting in frequent non-certification of organic seed is the level of infection from seed-borne and seed-transmitted... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding; Genetics and propagation. |
| Ano: 2009 |
URL: http://orgprints.org/14422/1/Weinhappel_14422.pdf |
| |
|
|
|
