Yield of fresh mass and nitrate reductase activity in lettuce fertilized by different nitrogen forms
2005
Tyksinski, W. | Bosiacki, M. | Pech, K.,Poznan Agricultural University (Poland). Dept. of Horticultural Plant Nutrition
Fertilization of lettuce by molybdenum and an increase of the pH level in substrates caused an increase of lettuce yield. The ureal form of nitrogen ensured a higher yield of lettuce than the remaining nitrogen forms. With the increase of pH of substrates increased the activity of nitrate reductase and the content of nitrates in lettuce fertilized by molybdenum decreased. The highest activity of nitrate reductase was found in lettuce fertilized by Ca(NO3)2, and the greatest amount of nitrates was found in lettuce fertilized by Ca(NO3)2 and NH4NO3
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