Acta Scientiarum Polonorum: Hortorum Cultus (Jun 2009)
EFFECT OF CHELATED AND MINERAL FORMS OF MICRONUTRIENTS ON THEIR CONTENT IN LEAVES AND THE YIELD OF LETTUCE. PART III. ZINC
Abstract
In 2-year seasonal experiments (cultivation in peat), the effect of chelated and mineral forms of zinc on the yield of greenhouse lettuce and on the content of zinc, copper, manganese and iron in lettuce leaves were compared. The following zinc doses were applied: 10, 20, 30, and 60 mg dm-3 of substrate. Using both forms of zinc in the studied range, good and similar yields were obtained. Zinc application in the mineral form caused a twice greater zinc concentration in lettuce leaves and a higher concentration of manganese, while copper and iron showed smaller concentrations.
