Publication Date
1989
Description
In the case of cocksfoot (Dactylis glomerata L.) cultivation in monoculture or its domination as a result of high N level further regrowth yields decrease is often observed. This situation also takes place on fertile soils and during years with good precipitation amounts. Similarly in pot experiments with optimal water and nutrients-N.P.K.-supply, this phenomenon also takes place. According to many research works, N application systematically acidifies the treated soil. In Poland 60 % of soils are acid ones (pHKcl < 5,6). Sandy soils dominating in Poland are poor organic matter and they possess low buffering capacity. They are not resistant to acidifying effect of nitrogen fertilization which, besides biological oldering of plants, can be the reason of yields lowering in further harvests. Lowering of soil reaction strongly effects micronutrients availability to plants to which its insufficiency or surplus is harmful. The problem of Mn toxicity and Mo insufficiency on acid soils is often discussed. The aim of the present research is to investigate the influence of increasing rates of commonly used N source - ammonium nitrate - on the yield and chemical composition of cocksfoot.
Citation
Gembrazewski, H and Sienkiewicz, Urszula, "Lowering Cocksfoot Yields Caused by Manganese Toxicity and Molybdenum Deficiency Caused by Acidifying Effect of Ammonium Nitrate Application" (2025). IGC Proceedings (1989-2023). 2.
https://uknowledge.uky.edu/igc/1989/session1/2
Included in
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Lowering Cocksfoot Yields Caused by Manganese Toxicity and Molybdenum Deficiency Caused by Acidifying Effect of Ammonium Nitrate Application
In the case of cocksfoot (Dactylis glomerata L.) cultivation in monoculture or its domination as a result of high N level further regrowth yields decrease is often observed. This situation also takes place on fertile soils and during years with good precipitation amounts. Similarly in pot experiments with optimal water and nutrients-N.P.K.-supply, this phenomenon also takes place. According to many research works, N application systematically acidifies the treated soil. In Poland 60 % of soils are acid ones (pHKcl < 5,6). Sandy soils dominating in Poland are poor organic matter and they possess low buffering capacity. They are not resistant to acidifying effect of nitrogen fertilization which, besides biological oldering of plants, can be the reason of yields lowering in further harvests. Lowering of soil reaction strongly effects micronutrients availability to plants to which its insufficiency or surplus is harmful. The problem of Mn toxicity and Mo insufficiency on acid soils is often discussed. The aim of the present research is to investigate the influence of increasing rates of commonly used N source - ammonium nitrate - on the yield and chemical composition of cocksfoot.
