Naslov
Influences of planosol fertilization with P and K on field crop yields and soil status

Autori
Kovačević, Vlado ; Kadar, Imre ; Jolankai, Marton ; Rastija, Mirta

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Plant-soil interactions at low pH: A Nutriomic Approach / Hong Liao, Xiaolong Yan, Leon Kochian - Guangzhou : South China University, 2009, 231-232

ISBN
978-7-5623-3009-7

Skup
7th International Symposium "Plant-soil interactions at low pH"

Mjesto i datum
Guangzhou, Kina, 17.05.2009. - 21.05.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
fertilization ; Phosphorus ; Potassium ; yield ; maize ; wheat

Sažetak
Three steps of P and K fertilization (500, 1000 and 1500 kg ha-1, either/or P2O5 and K2O and their second-step combination) were applied on acid soil. Only applications of the highest K rate and PK-combination resulted by significant increases of maize yields in 2004, for 5% and 12%, respectively. However, residual influences of the fertilization were higher because soybean yields were increased up to 21% (P- effects), 17% (K-effects) and 30% (PK-effects). In the third year (2006) only PK-fertilization resulted by significant increase of maize yield for 8%. In the fourth year of testing, wheat yields were increased up to 13% (P-effects), 14% (K- effects) and 18% (PK- effects). Influences of P and K fertilization on mobile fraction of tested elements in soil were mainly low. 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%). The amounts of 13 elements (Mg, S, Fe, Mn, Zn, Mo, Cr, Ni, Al, B, Ba, Co and Pb) were independent on the fertilization. Further, for three elements (Se, As and Hg) the concentrations were very low and under detectable ranges of the ICP-method. Also, the amounts of the 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 harmfull elements were found.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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