Open AccessEffect of potassium fertilization on its available and fixed content in vineyard soil
Author(s) -
V. Ličina,
Nebojša Marković
Publication year - 2002
Publication title -
journal of agricultural sciences
Language(s) - English
Resource type - Journals
eISSN - 2406-0968
pISSN - 1450-8109
DOI - 10.2298/jas0201037l
Subject(s) - vineyard , potassium , human fertilization , fertilizer , extraction (chemistry) , chemistry , rootstock , soil test , ammonium acetate , agronomy , potash , fraction (chemistry) , soil water , horticulture , environmental science , soil science , biology , chromatography , high performance liquid chromatography , organic chemistry
The experiment was conducted on brown forest soil in the vineyard with Sauvignon blanc variety on Kober 5BB rootstock. During a thre- year experiment (1994-1996), potassium fertilizer was added in a dose of 0 kg K2O/ha, 50 kg K2O/ha, 100 kg K2O/ha, 150 K2O/ha respectively. After the determination of soil potassium content (1870-1920 mg K2O/100 g), its available form was monitored by using two different extraction methods (AL method and 1N ammonium-acetate extraction). The amount of extracted available K was not significant between the used methods, while the effect of fertilization was visible only at 150 kg/ha potassium rate during the first year in soil layers (30-60 cm, 60-90 cm). Also, another examined soil K fraction (fixed K+) was not affected by K fertilizer application