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Phosphatase activities (ACP, ALP) in agroecosystem soils

Sarapatka, Borivoj (2003). Phosphatase activities (ACP, ALP) in agroecosystem soils. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae. Agraria, 1401-6249 ; 396
ISBN 91-576-6403-X
[Doctoral thesis]

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Soil phosphatases play a major role in the mineralization processes of organic phosphorus substrates. Enzymes in soils originate from animal, plant and microbial sources and the resulting soil biological activity includes the metabolic processes of all these organisms. The activity of soil phosphatases can be influenced by numerous factors and soil properties and farming systems play a key role among them. The research adds to the growing knowledge on soil phosphatases in their interactions with specific soil characteristics at nine sites in the Czech Republic with common soil types. The results show correlations and linear equations between phosphatase activity and soil characteristics. The trials were also conducted at experimental locations and farms in Uppland (Sweden) with eutric cambisol soil type. The results also demonstrate the correlation between acid and/or alkaline phosphatase and several soil characteristics. At the experimental plots were also studied the effect of different farming systems (conventional farming without animal husbandry, organic farming with animal husbandry, organic without animal husbandry with standard soil cultivation, and organic agricultural system without animal husbandry with minimum soil management). The research is also concentrated toward acid phosphatase activity linked to cultivated plants. The evaluation was carried out on the root systems of both the chosen species and cereal varieties and also in nutrient medium on which crops were planted under conditions of changing pH and phosphorus supply. The results show that the acid phosphatase activity in the root system of various species and cereal cultivars is negatively correlated with increasing pH and available phosphorus level in the nutrient medium. Attention was also paid to acid phosphatase and alkaline phosphatase active colonies of bacteria, isolated from soils. The activity of acid phosphatase and other soil properties were compared with the number of bacteria belonging to the genus Micrococcus. Numerous correlations were described but the results didn't show any correlation between phosphatase active colonies of bacteria and acid and alkaline phosphatase activity in the investigated soils. This is probably due to the production of phosphatates by organisms other than bacteria.

Authors/Creators:Sarapatka, Borivoj
Title:Phosphatase activities (ACP, ALP) in agroecosystem soils
Series Name/Journal:Acta Universitatis Agriculturae Sueciae. Agraria
Year of publishing :May 2003
Number of Pages:59
ALLI. Šarapatka, B., Kršková, M. 1997. Interactions between phosphatase activity and soil characteristics at some locations in the Czech republic. Rostlinná výroba/Plant Production, 43, 415-419. II. Šarapatka, B. 2002. Phosphatase activity of eutric cambisols (Uppland, Sweden) in relation to soil properties and farming systems. Acta Agriculturae Bohemica, 33(1), 18-24. III. Šarapatka, B., Dudová, L., Kršková, M. Effect of pH and phosphate supply on acid phosphatase activity in cereal roots. (Accepted for publication in Biologia) IV. Hýsek, J., Šarapatka, B. 1998. Relationship between phosphatase active bacteria and phosphatase activities in forest soils. Biol Fertil Soils, 26, 112-115.
Place of Publication:Uppsala
ISBN for printed version:91-576-6403-X
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:P Natural resources > P33 Soil chemistry and physics
P Natural resources > P34 Soil biology
Subjects:Not in use, please see Agris categories
Agrovoc terms:soil chemistry, agricultural soils, soil biology, roots mineralization, enzymes, enzyme activity, czech republic, sweden
Keywords:soil, activity, enzymes, phosphatases, ACP, ALP, soil properties, farming systems, plants
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ID Code:286
Department:(NL, NJ) > Institutionen för ekologi och växtproduktionslära (fr.o.m. 990101)
Deposited By: Staff Epsilon
Deposited On:09 May 2003 00:00
Metadata Last Modified:02 Dec 2014 10:03

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