Naslov
Assessment of liming impact on soil fertility

Autori
Karalić, Krunoslav ; Rastija, Domagoj ; Popović, Brigita ; Kovačević, Vlado ; Lončarić, Zdenko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts International Conference on Soil Fertility and Soli Productivity - Differences of Efficiency of Soils for Land Uses, Expenditures and Returns / Burghardt, Wolfgang - Essen : University of Duisburg-Esen, FK of Biology and Geography, 2010, 201-201

Skup
International Conference on Soil Fertility and Soli Productivity - Differences of Efficiency of Soils for Land Uses, Expenditures and Returns

Mjesto i datum
Berlin, Njemačka, 17.03.2010. - 20.03.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
liming ; soil fertility ; calculation model

Sažetak
The aim of this paper was to interpret liming influence on soil fertility by different calculation model with variable importance of some soli properties. Liming and fertilization experiment was sat up in 20 L volume plastic pots with two types of acid soils with different texture from two different localities in order to collect data for calculation model. Ten mineral and organic fertilization treatments with two levels of liming were applied in four repetitions. Soil was sampled and analysed after first and second year of investigation in a year 2004 and 2005. Soil analyses included common methods used for soil fertility control. Results showed significant liming impact on increase of soil pH and phosphorus availability. In second year liming impacted on soil organic matter decomposition. Liming resulted with lower Fe, Mn, Zn and Cu availability in soils from both sites. Results of soil properties change influenced by lime application, mineral and organic fertilization were used to create calculation model. Selection of indicators for model assessment of liming impact on soil fertility included soil availability of P2O5 (mg kg-1 according to AL- method) , Fe, Mn, Zn, Cu (mg kg-1 EDTA available microelements) and soil organic matter content (SOM %). This soil indicators were quantified by application of score functions as mathematical overview of soil properties influence to soil fertility according to analysed range. Values of score functions ranged from 0 - 1 as optimum value. Indicator value was interpreted according to importance of certain soil property to soil fertility assessment. The calculation model consider variable importances (0, 25-0, 50) of three soil properties (AL-P, SOM and EDTA- microelements), but the summ of importances was in all cases set as 1, 00. Importance of AL-P, SOM and EDTA-microelements influenced very significantly on interpretation of liming and fertilization impact on soil fertility. The lowest importance of AL-P and SOM, and highest importance of microelements resulted in negative impact of liming (2-11%), neutral impact of liming+fertilization and positive impact of mineral fertilization without liming (6%) on soil fertility. Increasing importance of AL-P resulted in positive interpretation of liming+fertilization impact on soil fertility (15, 1%), as well as increasing importance of SOM (7, 6%). Simultaneously increasing importance of AL-P and SOM consequently decreased importance of microelements availability, and resulted in most positive intepretation of liming+fertilization impact on soil fertility (increasing 20, 8%).

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA