| Autor: |
R. F. Horrell, W. L. Lowther, P. D. Johnstone, W. J. Fraser, K.D. Trainor |
| Rok vydání: |
1996 |
| Předmět: |
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| Zdroj: |
Soil and Tillage Research. 38:161-174 |
| ISSN: |
0167-1987 |
| DOI: |
10.1016/0167-1987(96)01025-2 |
| Popis: |
Improvement of depleted grasslands can be restricted by the lack of reliable, cost effective and ecologically sound establishment techniques. This paper presents results from an experimental strip seeder drill designed to mechanically remove competing vegetation. Lucerne ( Medicago sativa L.), birdsfoot trefoil ( Lotus corniculatus L.), cocksfoot ( Dactylis glomerata L.) and tall fescue ( Festuca arundinace Schreb.) were drilled into undeveloped natural grassland with either a triple disc drill or a strip seeder drill in the absence or presence of herbicide. There were small differences between the drills in initial seedling establishment 7 weeks after September sowing but seedling survival over summer varied with drill and herbicide treatment. With the strip seeder drill, 80% and 85% of seedlings survived in the absence and presence of herbicide, respectively, while with the triple disc drill 74% survived in the presence of herbicide but only 40% survived in the absence of herbicide. Five months after sowing, 56% and 63% of the strip seeder furrow was covered by sown species in the absence and presence of herbicide compared with only 6% and 35% of the triple disc furrow. These differences in cover were also reflected in herbage dry matter of sown species in the 3 years following drilling. The results demonstrate the agronomic superiority of the strip seeder drill for establishment of improved pasture species. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect