publication . Article . 2005

effects of nitrate ammonium and organic nitrogen based fertilizers on growth and yield of tomatoes

Anuschka Heeb; Bengt Lundegårdh; Tom Ericsson; Geoffrey P. Savage;
  • Published: 14 Feb 2005 Journal: Journal of Plant Nutrition and Soil Science, volume 168, pages 123-129 (issn: 1436-8730, Copyright policy)
  • Publisher: Wiley
Mineral and organic fertilizers contain different forms and amounts of nitrogen (N), which can affect yield and product quality. The aim of this study was to determine appropriate amounts of N applied as nitrate (NO), ammonium (NH), and organic N (a mixture based on chicken manure) for optimal growth and quality of tomatoes. A pot experiment with sand as substrate was established in a greenhouse with six-week-old tomato plants (Lycopersicon esculentum Mill. cv. “Armada”). Nitrogen was applied in nutrient solutions at different NO : NH ratios combined with different chloride levels (NO-dominated, NO = NH at low Cl–, NO = NH at high Cl–, and NH-dominated, respecti...
free text keywords: Nitrogen, chemistry.chemical_element, chemistry, Chicken manure, Optimal growth, Organic fertilizer, Ammonium, chemistry.chemical_compound, Chloride levels, Environmental factor, medicine.disease_cause, medicine, Botany, Nitrate
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