master's thesis
Comparations model for different potassium extraction methods in eastern Slavonia soils

Paula Gavranović (2016)
Sveučilište Josipa Jurja Strossmayera u Osijeku
Poljoprivredni fakultet
Zavod za Agroekologiju
Metadata
TitleModel usporedbe različitih metoda ekstrakcije kalija u tlima istočne Slavonije
AuthorPaula Gavranović
Mentor(s)Brigita Popović (thesis advisor)
Abstract
Cilj ovog rada bio je definirati različite metode ekstrakcije kalija u tlima Slavonije te njihovom usporedbom odrediti korelacije i kreirati model predviđanja koncentracije kalija temeljem osnovnih svojstava tla i ostalih ekstrakcijskih metoda. Na uzorcima tala uzetih s ratarskih površina istočne Slavonije (na različitim lokalitetima: Donji Miholjac, Rakitovica, Badljevina, Zelčin) na dubini od 0-30 cm provedene su laboratorijske analize osnovnih kemijskih svojstava tla: pH tla, sadržaj humusa u tlu bikromatnom metodom, koncentracija AL-pristupačnog kalija, te analize dopunskih svojstava tla: određivanje sadržaja karbonata u tlu. Od metoda koje su se koristile: AL metoda, AA metoda, AAEDTA metoda, Bray metoda, u obzir su se uzeli samo rezultati AL i AA-EDTA metode zbog brojnosti rezultata. Ovim dvjema metodama izvedeni su neki od sljedećih zaključaka: ekstrakcija kalija AA-EDTA metodom rezultira nižim vrijednostima u odnosu na ekstrakciju AL metodom prosječno 91% za sva tla u rasponu pHKCl 3,5-7,7. Različiti odnosi rezultata AA-EDTA i AL metoda na različitim pokusima i lokalitetima upućuju na zaključak da je model osjetljiv i na druga svojstva tla, što može omogućiti kreiranje još osjetljivijih i preciznijih modela uz dopunska istraživanja. AA-EDTA metoda može se sa sigurnošću koristiti za izradu preporuka gnojidbe kalijem, a pri tome se mogu koristiti iskustva gnojidbenih preporuka, provedenih gnojidbi i ostvarenih prinosa na temelju rezultata AL metode.
Keywordsmethod comparision potassium soil models
Parallel title (English)Comparations model for different potassium extraction methods in eastern Slavonia soils
Committee MembersVladimir Zebec (committee chairperson)
Vladimir Ivezić (committee member)
GranterSveučilište Josipa Jurja Strossmayera u Osijeku
Poljoprivredni fakultet
Lower level organizational unitsZavod za Agroekologiju
PlaceOsijek
StateCroatia
Scientific field, discipline, subdisciplineBIOTECHNICAL SCIENCES
Agronomy
Crop Production
Study programme typeuniversity
Study levelgraduate
Study programmePlant Production; specializations in: Plant Production, Plant Nutrition and Soil Science, Plant Selection and Seed Production, Plant Protection
Study specializationPlant Nutrition and Soil Science
Academic title abbreviationmag. ing. agr.
Genremaster's thesis
Language Croatian
Defense date2016-07-01
Parallel abstract (English)
The aim of this paper was to define different methods of potassium extraction in Slavonija soils. Also, the correlations between different methods were determined and predictive modeling of potassium concentration was created based on basic soil caracteristics and other extraction methods. In the soil samples taken from the feild area of Eastern Slavonija (on different localities: Donji Miholjac, Rakitovica, Badljevina, Zelčin) at a depth of 0-30 cm laboratory analysis of the basic chemical properties of the soil were carried out: soil pH, humus content in the soil with dichromate method, concentration of AL-accessible potassium and the additional analysis of soil properties: the determination of the carbonate content in the soil. From the methods wich have been used: AL, AA, AA-EDTA, Bray, because of large number of informations, only AL i AA-EDTA methods have been considered in further investigation. Within these two methods, the following conclusions have been given: potassium extraction with AA-EDTA method has lower values according to extraction with AL method, on average 91% for all soils in the range of pHKCl 3,5-7,7. Further, pH reaction of soil significatly affects the ratio of AL and AA-EDTA extracted. Different ratio of the results of AA-EDTA i AL methods in different trials and localities suggest that the model is sensitive on other soil properties as well, which can enable the creation of more sensitive and accurate models with additional research. AA-EDTA method can be safely used for making fertilizer potassium recommendations.
Parallel keywords (Croatian)usporedba metoda kalij tlo model
Resource typetext
Access conditionOpen access
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
Notediplomski rad
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:151:795625
CommitterLjiljana Vučković Vizentaner