Effect of cutting date and phosphorus fertilizer application on seed production by Brachiaria humidicola. 2. Effect on seed viability and dormancy

摘要

In a field trial in 1995/96 near Pucallpa, Peru, B. humidicola cv. CIAT 6133 was cut on 15 September or 1 or 15 October or November and given 50, 100 or 150 kg P/ha. After 270 days of storage, seed germination was greatest (58%) with cutting on 1 October. Breaking of dormancy occurred after 90-100 days after storage. Seed viability was greatest with cutting on 1 October or November. P application appeared to increase germination and accelerate dormancy breaking, especially with cutting on 1 October.