Effects of tillage on productivity of a winter wheat-vetch rotation under dryland Mediterranean conditions
Published source details Ozpinar S. (2006) Effects of tillage on productivity of a winter wheat-vetch rotation under dryland Mediterranean conditions. Soil and Tillage Research, 89, 258-265.
Actions
This study is summarised as evidence for the following.
| Action | Category | |
|---|---|---|
Water: Use reduced tillage in arable fields Action Link |  | |
Crop production: Use reduced tillage in arable fields Action Link | |
Water: Use reduced tillage in arable fields
A replicated, randomized, controlled study in 2001–2004 in a rainfed wheat-vetch field in the Marmara region, Turkey, found higher water-use efficiencies in plots with reduced tillage, compared to conventional tillage. Water use: Higher crop yields (relative to rainfall) were found in plots with reduced tillage, compared to conventional tillage, in one of two comparisons (7.6 vs 7.2 precipitation use efficiency). Implementation options: Similar crop yields (relative to rainfall) were found in plots that were rototilled and disked or double disked (7.6 vs 7.4 precipitation use efficiency). Methods: Conventional tillage with a mouldboard plough (20–22 cm depth) and a double disc (two passes, 8–10 cm depth), reduced tillage with a rototiller (20–22 cm depth) and a double disc (one pass, 8–10 cm), or reduced tillage with a double disc (two passes, 8–10 cm) was used on three plots each (15 x 75 m plots). Fertilizer and herbicide were used on all plots. Wheat was sown in December 2001, October 2002, and November 2003. Vetch was sown in December 2001, November 2002, and December 2003. Wheat and vetch were harvested in June 2002–2004 (3 m2 samples, three/plot).
Crop production: Use reduced tillage in arable fields
A replicated, randomized, controlled study in 2001–2004 in a rainfed wheat-vetch field in the Marmara region, Turkey (same study as (5)), found higher wheat yields in plots with reduced tillage, compared to conventional tillage. Different types of reduced tillage had different effects on wheat and vetch yields. Crop yield: Higher wheat yields were found in plots with reduced tillage, compared to conventional tillage (4,821–5,057 vs 4,683 kg/ha), but similar vetch yields were found (2,462–3,764 vs 3,593 kg/ha). Crop quality: Similar seed weights were found in plots with reduced tillage or conventional tillage (35.8–38.9 vs 37.8 g/1,000 seeds). Implementation options: Higher wheat yields, but lower vetch yields, were found in plots that were rototilled and disked, compared to plots that were double disked (wheat: 5,057 vs 4,821 kg/ha; vetch: 2,462 vs 3,764), and similar seed weights were found (38.9 vs 35.8 g/1,000 seeds). Methods: Conventional tillage with a mouldboard plough (20–22 cm depth) and a double disc (two passes, 8–10 cm depth), reduced tillage with a rototiller (20–22 cm depth) and a double disc (one pass, 8–10 cm), or reduced tillage with a double disc (two passes, 8–10 cm) was used on three plots each (15 x 75 m plots). Fertilizer and herbicide were used on all plots. Wheat was sown in December 2001, October 2002, and November 2003. Vetch was sown in December 2001, November 2002, and December 2003. Wheat and vetch were harvested in June 2002–2004 (3 m2 samples, three/plot).
