ISHS Acta Horticulturae 491: International Symposium Greenhouse Management for Better Yield & Quality in Mild Winter Climates
EFFECTS OF NITROGEN AND POTASSIUM NUTRITION ON PLANT GROWTH, YIELD AND FRUIT QUALITY OF CUCUMBERS GROWN IN PERLITE |
| Authors: | H. Altunlu, A. Gül, A. Tunç |
| Abstract:
This study was carried out during autumn, 1995. Nine different nutrient solutions containing 100, 200 and 300 ppm of N and K in various combinations were tested on cucumbers (cv. Alara) grown in glasshouse in perlite. Nitrogen concentrations were found to influence plant growth, yield and fruit quality. The use of 300 ppm N decreased plant growth and total yield. Symptoms of powdery mildew were lowest at 200 ppm N+200 or 300 ppm K where yields were in general high. It was concluded that the N concentration of the nutrient solution should not be more than 200 ppm and the K concentration should be between 200–300 ppm for profitable cucumber production in perlite. | |
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