ISHS Acta Horticulturae 401: International Symposium on Growing Media & Plant Nutrition in Horticulture
EFFECT OF DIFFERENT FORMS OF NITROGEN ON THE QUALITY OF LETTUCE YIELD |
| Authors: | W. Sady, S. Rozek, J. Myczkowski |
| Keywords: | nutrient film technique, lettuce, nitrate reductase, nitrate, nitrite, yield, sugars |
| Abstract:
In 1986–1993, the complex effect of fertilization method, dates of growing and growth regulators on the quality of lettuce cultivated using NFT were investigated. It was found that one could significantly lower nitrate contents in lettuce yield by interaction of growth regulators (GA3 + kinetin) and interruption of NPK nutrition two weeks before the harvest. However, the best method to decrease nitrate contents in lettuce, seemed to be fertilization with reduced nitrogen forms which allowed to obtain a yield of lettuce as high as in the case of the nitrate treatment, characterized by high dry matter and sugar contents. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
