master's thesis
The suitability of the method for organic phosphorus soil determination

Ivana Marković (2016)
Josip Juraj Strossmayer University of Osijek
Faculty of agriculture
DEPARTMENT FOR AGROECOLOGY
Metadata
TitlePogodnost metoda za utvrđivanje organskog fosfora u tlu
AuthorIvana Marković
Mentor(s)Brigita Popović (thesis advisor)
Abstract
U ovom radu utvrđivale su se razlike između metoda za određivanje organskog fosfora u tlu uspoređivanjem dvije metode: KUO žarenjem te metodom s NaOH u tri ekstrakcije. Istraživanje je provedeno na se na uzorcima ratarskih tala kontinentalne Hrvatske. Svaki uzorak težio je 0,5-1 kg. Provedene su i osnovne laboratorijske analize kao što su: određivanje pH tla, sadržaj humusa u tlu, kocentracija AL-pristupačnog fosfora, te analiza dopunskih svojstava tala. Ukupno je analizirano 30 uzoraka tala, no zbog kompleksnosti provedenih metoda i heterogenosti rezultata rezultati su svedeni na 10 uzoraka. Rezultati aktualne kiselosti u uzorcima kretale su se u rasponu od pH (H20) 5,10 do pH (H20) 8,32 i supstitucijske kiselosti od pH (KCl) 3,88 do pH (KCl) 7,52 što je raspon od slabokisele do slabo alkalne reakcije. Rezultati koncentracije fosfora prema AL-metodi kretali su se u kiselim tlima u rasponu od 23,33 do 95,42 mg P2O5/100g tla, dok u alkalnim tlima u rasponu od 8,05 do 35,47 mg P2O5/100g tla. U svim ispitanim uzorcima humus se nalazio u razini osrednje humoznih tala. Prosječno je metodom u tri ekstrakcije određeno 370,85 mg/kg organskog fosfora što je bilo za 57 % više od koncnetracija organskog fosfora utvrđenog Kuo metodom (214,31 mg/kg).Između tri ekstrakcije i Kuo metode utvrđena je korelacija u nizu NaOH
KeywordsPh KUO method three extraction method NaOH organic P
Parallel title (English)The suitability of the method for organic phosphorus soil determination
Committee MembersSuzana Kristek (committee chairperson)
Krunoslav Karalić (committee member)
GranterJosip Juraj Strossmayer University of Osijek
Faculty of agriculture
Lower level organizational unitsDEPARTMENT FOR AGROECOLOGY
PlaceOsijek
StateCroatia
Scientific field, discipline, subdisciplineBIOTECHNICAL SCIENCES
Agronomy
Crop Production
Study programme typeuniversity
Study levelgraduate
Study programmeEcological Agriculture
Academic title abbreviationmag. ing. agr.
Genremaster's thesis
Language Croatian
Defense date2016-04-28
Parallel abstract (English)
The aim of this paper was to determined the difference between the two methods for the organic phosphorus determination in the soil: KUO annealing method with NaOH, and the three extractions. The analysis were made on samples of arable soils in continental Croatian. Each sample weighed 0.5-1 kg ad basiy soil chemical properties were determined such as pH of the soil, humus content in the soil, concentration of AL-available phosphorus, as well as analisysis of additional properties of soils were determined too. In total were analyses 30 soil samples, but due to the complexity of implemented methods and heterogeneity of results results are reduced to 10 samples. Results of actual acidity of the samples were in the range of pH (H20) to pH 5.10 (H20) 8,32, and substitution from pH (KCl) to 3.88 pH (KCl) 7.52 as in the range of weak acid to slightly alkaline. The results of the phosphorus concentration by AL-method ranged in acidic soils ranging from 23.33 to 95.42 mg of P2O5 / 100 g soil, while in alkaline soils ranging from 8.05 to 35.47 mg of P2O5 / 100 g of soil. In all examined sampleshumus content was found in the level of the medium humus soil. Average the three extraction method specified in 370.85 mg / kg of organic phosphorus which was 57% more than the organic phosphorus burning appliances or chimneys Kuo established method (214.31 mg / kg) and three extractions Amongst Kuo methods and correlation between the series of NaOH
Parallel keywords (Croatian)pH KUO metoda ekstrakcija u tri koraka metoda s NaOH organski fosfor
Resource typetext
Access conditionOpen access
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
Notediplomski rad
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:151:985934
CommitterLjiljana Vučković Vizentaner