Naslov
Influences of ameliorative fertilization on soil nutritional status in Bjelovar-Bilogora County

Autori
Šeput, Miranda ; Stojić, Biserka ; Kovačević, Vlado

Izvornik
Cereal Research Communications (0133-3720) 36 (2008), Suppl. 5 Part 2; 1315-1318

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
ameliorative fertilization ; Phosphorus ; Potassium ; soil testing ; planosol

Sažetak
The field experiment was conducted (April 2004) on planosol (a = ordinary fertilization, b = a + P1, c = a + P2, d = a + P3 , e = a + P1, f = a + P2, g = a + P3 , h = a + P2K2). The amounts of added either/or phosphorus (P2O5) and potassium (K2O) were (kg ha-1) 500, 1000 and 1500, for the step 1, 2 and 3, respectively. Nitrogen amount was equilized for all treatments by adequate quatities of CAN (calcium ammonium nitrate: 27% N). In general, influences of P and K fertilization on mobile fraction (NH4-Acetate + EDTA ; pH 4.65 ; determination using inductively coupled plasma) of 23 elements in soil (sampling in November 2005) were low. For example, non-significant differences among the treatments were found for 13 elements (Mg, S, Fe, Mn, Zn, Mo, Cr, Ni, Al, B, Ba, Co and Pb). Further, for three elements (Se, As and Hg) the concentrations were very low and under detectable ranges of the applied methods. P fertilization significantly influenced on soil P (+145%), Ca (+58%), Sr (+53%) and Cd (+12%), At the same time, K fertilization resulted by significant increases of soil K (+77%) and decreases of soil Cu (-17%), and Na (-54%). However, the amounts of tested elements in soil were mainly low (the control treatment in mg kg-1: 84 for P, 188 for K, 362 for Ca, 3.12 for Cu, 1.15 for Sr, 23.7 for Na and 0.084 for Cd). It is evidently that in our study low levels of harmful elements were found.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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