ISHS Acta Horticulturae 649: Euro Berry Symposium - Cost 836 Final Workshop
NITRATE-SULFATE RATIO FOR STRAWBERRIES GROWN ON PEATBAGS |
| Author: | P. Lieten |
| Keywords: | Fragaria x ananassa, sulfur, substrate culture |
| Abstract:
Shortday strawberry plants (Fragaria x ananassa Duch. 'Elsanta') were grown on peat bags. Five ratios of NO3-SO4 were applied with the nutrient solution from planting until end of harvest (12:0, 11:0.5, 10:1, 9:1.5 and 8:2 mmol/l in the first trial and 13:0, 11:1, 9:2, 7:3 and 5:4 mmol/l in two other trials). In all trials withholding SO4 significantly reduced fruit size and yield. For a short production cycle (winterplanting) the ratios did not significantly affect yield, fruitnumber nor fruitsize. For long production cycles (summerplanting) the best plant performance and yield was obtained with NO3-SO4 ratios of 9:2 mmol/l. There was a significant reduction of total fruits, misshaped fruits and total yield with a NO3-SO4 ratio of 5:4 mmol/l. | |
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