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EnglishThe research was carried out in a Mediterranean semi-arid environment on berseem clover, annual ryegrass and their mixture to study the effect of defoliation management [date of first cut (FC) 85, 119, 140, 169 days after sowing] and different plant arrangements (sowing the two components in alternate rows or in the same row) on yields, N content, N2 fixation and N transfer. The experimental design was a split-plot with four replications. The 15 N isotope dilution technique was used (8 kg N ha –1 as ammonium sulphate at 10 atom% 15 N excess) to evaluate the N2 fixation. Total seasonal DM yield was, on average, significantly higher for FC119 and FC140 (approx. 12.3 t ha –1 ) than for FC85 and FC169 (approx. 10.6 t ha –1 ). Plant arrangement did not significantly influence total yield of the mixture. However, the legume yield was higher (+20%; P<0.0001) in the same row than in alternate rows arrangement. N content of ryegrass was significantly higher in the mixtures than in pure stand and in the ‘same row’ plant arrangement than in the ‘alternate rows’. Intercropped berseem always had a significant higher % of Ndfa than the monocropped one (on average 74.7% and 57.7% respectively). The apparent transfer of fixed N from berseem to ryegrass was not detected in either plant arrangement.
Giambalvo, D., Stringi, L., Scarpello, C., Attardo, C., DI MICELI, G., & Amato, G. (2005). Effect of defoliation management and plant arrangement on yield and N2 fixation of berseem-annual ryegrass mixture. In Integrating efficient grassland farming and biodiversity: proceedings of the 13th International Occasional Symposium of the European Grassland Federation, Tartu, Estonia, 29-31 August 2005 (pp.541-545).
| Autori: | Giambalvo, D.; Stringi, L.; Scarpello, C.; Attardo, C.; DI MICELI, G.; Amato, G. |
| Titolo: | Effect of defoliation management and plant arrangement on yield and N2 fixation of berseem-annual ryegrass mixture |
| Nome del convegno: | EGF 2005 Integrating Efficient Grassland Farming and Biodiversity |
| Anno del convegno: | 29-31 August 2005 Tartu (Estonia) |
| Data di pubblicazione: | 2005 |
| Citazione: | Giambalvo, D., Stringi, L., Scarpello, C., Attardo, C., DI MICELI, G., & Amato, G. (2005). Effect of defoliation management and plant arrangement on yield and N2 fixation of berseem-annual ryegrass mixture. In Integrating efficient grassland farming and biodiversity: proceedings of the 13th International Occasional Symposium of the European Grassland Federation, Tartu, Estonia, 29-31 August 2005 (pp.541-545). |
| Tipologia: | 0 - Proceedings (TIPOLOGIA NON ATTIVA) |
| Appare nelle tipologie: | 0 - Proceedings (TIPOLOGIA NON ATTIVA) |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| 2005 EGF GSEvol10 541-545.pdf | N/A | Open Access Visualizza/Apri |
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