Effect of cultivar mixtures in wheat on fungal diseases, yield and profitability
| Autor: | H. Fehrmann, Richard Manthey |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
2. Zero hunger
0106 biological sciences Fusarium biology food and beverages 04 agricultural and veterinary sciences biology.organism_classification 01 natural sciences Rust Fungicide Septoria Agronomy 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Cultivar Puccinia recondita Agronomy and Crop Science Powdery mildew 010606 plant biology & botany Hybrid |
| Zdroj: | Crop Protection. 12:63-68 |
| ISSN: | 0261-2194 |
| DOI: | 10.1016/0261-2194(93)90022-b |
| Popis: | Cultivar mixtures in wheat decreased disease development and gave higher yields than pure stands in field trials over two seasons. Spring wheat usually gave higher yield responses than winter wheat. Delays in disease development were clearly observed for powdery mildew (Erysiphe graminis) and leaf rust (Puccinia recondita). A tendency towards delayed development was observed for stripe rust (Puccinia striiformis). For assessment of non-specialized pathogens (Fusarium spp., Septoria nodorum), numbers of conidia on leaves were counted and found to be reduced on leaves of cultivar mixtures. Yield increase in the best winter wheat mixture was on average 5.1 % and in the best spring wheat mixture 5.7% (without fungicide treatment). Cultivar mixtures gave a higher profit than the respective pure stands. F1 and F2 hybrids were compared with the corresponding two-cultivar mixtures, but did not show promise with regard to profitability. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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