Naslov
Influences of fertilization on yield and nutritional status of maize

Autori
Lončarić, Zdenko ; Kovačević, Vlado ; Šeput, Miranda ; Šimić, Branimir ; Stojić, Biserka

Izvornik
Cereal research communications (0133-3720) 33 (2005), 1; 259-262

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

Ključne riječi
soil pH ; field experiment ; P and K fertilization ; maize ; yield ; nutritional status ; AL-method

Sažetak
The experiment with fertilization (500 and 1000 kg/ha P2O5 and K2O alone and in their combination + standard fertilization) was conducted in spring 2003. Phosphorus (P) was added as MAP (monoammonium-phosphate: 12% N + 52% P2O5) and potassium (K) in KCl form (60% K2O). The field trial was conducted by randomized block design in four replicates. For the next year, residual effects of ameliorative fertilization were tested. Although low levels of P and K were found by the soil test (AL- method), maize yields were similar for applied treatments in both years. For this reason, in question is scientific application of AL-method in interpretation of soil nutritional status for this and similar soil types. In our study, adequate levels of P, K, S, Ca and Mg, as well as high levels of Mn in maize leaves (the ear- leaf at silking stage) were found. K fertilization significantly increased K concentrations, while Ca and Mg concentrations were decreased. Also, P concentrations were increased as affected by P fertilization. Zinc concentrations in maize were decreased due to application of P, while S, Fe and Mn status in plants were mainly independent on applied fertilization.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA