Naslov
Soil acidity and phosphorus status in the northern Bosnia and their improvement by agromeliorations

Autori
Marković, Mihajlo ; Komljenović, Ilija ; Kovačević, Vlado ; Lukač, Zoran

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

Izvornik
Proceedings of International Conference „Soil, Plant and Food Interactions“ / - Brno : Faculty of Agronomy, Mendel University Brno, 2011, 273-280

ISBN
978-80-7375-534-8

Skup
International Conference „Soil, Plant and Food Interactions“

Mjesto i datum
Brno, Češka Republika, 06.09.2011. - 08.09.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
liming ; soil acidity ; ameliorative phosphorus fertilization ; maize

Sažetak
Soil acidity and low levels of plant available phosphorus are serious limiting factor of field crop yields in the northern Bosnia. For example, more than 60 % of tested samples of Gradiska municipality had soil pH less than 4.5. Also, about 60 % of soils were low in plant available phosphorus. However, potassium status is considerably more favorable because only about 10 % of samples was low i plant available K. Four maize field experiments with increasing rates of P(K) up to 1500 kg P2O5/ha (the exp. I), 1750 kg P2O5/ha (the exp. II), up to 1250 kg P2O5/ha and 1880 kg K2O/ha (the exp. IV) and liming (dolomite up to 20 t/ha – the exp. III) were conducted in area of Gradiska and Kozarska Dubica municipalities in the period from 2004-2008. Triple superphosphate (45% P2O) and NPK 7:20:30 were sources of P(K). The field experiments were conducted in four replicates. As affected by P fertilization (the experiment I) maize yields were increased up to 32 % (2004), 17 % (2005), and 20 % (2006). Under drought stress of 2007 low maize yields and absence response to fertilization were found. Yield increase in the exp. II was 17% (4-year means: 4.30 and 5.02 t/ha, for control and ameliorative P-treatments, respectively). Liming (the experiment III) considerably increased grain yields of maize for 101% (2005), 44 % (2006) and 43 % (2007). In the experiment IV grain yields of maize were increased for 13 % and 15 %, for 2008 and 2009, respectively.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA