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Soil nematode responses to fertilization with ammonium nitrate after six years of unfertilized apple orchard
ecological indices soil food web bioindicator nitrogen fertilizer Malus domestica
2014/10/24
A nematode community was used as a bioindicator of changes in agroecosystems caused by fertilization. The effect of applying nitrogen (N) fertilizer on a soil nematode community structure was studied ...
The Ammonium Fixation in Great Soil Groups of Tokat Region and Some Factors Affecting The Fixation I. The Affect of Potassium on Ammonium Fixation
Ammonium Fixation Great Soil Groups of Tokat Region Fixation I.
2009/1/15
The objective of this study was to evaluate the fixation of ammonium in the soils of Tokat region to find out the important factors influencing them. For this purpose 12 representative soil samples we...
Phosphorus in Finnish soils in the 1900s with particular reference to the acid ammonium acetate soil test
acid soils bioavailability chemical fractions old soil samples total phosphorus
2010/8/16
Comprehensive research into phosphorus (P) in soils and crops began in Finland in the early 1900s. The average amount of total P in the ploughed topsoil layer of mineral soils was about two tonnes per...