| Autor: |
Nguyen BT; School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, QLD 4072, Australia.; National Institute of Medicinal Materials, Hanoi 134000, Vietnam., Harper SM; School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, QLD 4072, Australia., O'Hare TJ; The Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, QLD 4072, Australia., Menzies NW; School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, QLD 4072, Australia., Wehr B; School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, QLD 4072, Australia. |
| Abstrakt: |
Improving bulb yield and allicin content of garlic is important in meeting fresh and pharmaceutical market demands. Garlic plants have a high demand for sulfur (S) since allicin contains S atoms. Two experiments were conducted to identify the effect of S application rate on garlic yield and quality. In a field trial assessing six S application rates (0-150 kg S ha -1 ), cultivar 'Glenlarge' produced the greatest bulb weight (~90 g) and allicin content (521 mg bulb -1 ) with the application of 75 kg S ha -1 . In contrast, cultivar 'Southern Glen' showed no response in bulb weight or allicin. This was likely due to high soil background S concentrations masking treatment effects. Subsequently, a solution culture experiment with cv. 'Glenlarge' evaluated six S application rates (188 to 1504 mg S plant -1 , nominally equivalent to 25-200 kg S ha -1 ). In solution culture, bulb weight and allicin concentration increased with S rate. Highest bulb weight (~53 g bulb -1 ) and allicin concentration (~11 mg g -1 DW) were recorded at an S application of 1504 mg S plant -1 . This is the first report to conclusively demonstrate the effect of S on yield and allicin in garlic grown in solution culture. |
