Naslov
Irrigation and nitrogen fertilization needs for maize in Osijek-Baranja County

Autori
Josipović, Marko ; Kovačević, Vlado ; Šoštarić, Jasna ; Plavšić, Hrvoje ; Marković, Monika

Izvornik
Növénytermelés (0546-8191) 61 (2012), 2; 45-48

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

Ključne riječi
Maize ; irrigation ; nitrogen fertilization ; grain yield ; water

Sažetak
Global climatic changes have considerably impacts on field crops growing, mainly by increasing trend of temperature and more frequency of drought stress in the critical stages of growth. Irrigation is direct measure for improvement of water status in soil and alleviation of drought stress effects. Stationary field experiment with irrigation and nitrogen fertilization was started on Agricultural Institute Osijek in spring 2006. Soil moisture was maintained by irrigation in range from 60% to 100% (A2) and 80% to 100% (A3) of field water capacity (FWC) and no irrigation treatment (A1, control). Three rates of nitrogen were used: B1=control (non- fertilized), B2=100 kg N ha-1, B3=200 kg N ha- 1. Aim of this paper is analyse variation of maize grain yields in the period 2006-2011 with rainfall and temperature regime in connection with set treatments. In the 3-month June-August period precipitation in Osijek were in range from 105 to 377 mm and mean air- temperature from 21.0 to 22.8 degree. In accordance with these parameters status, need for irrigation was in range from 40 to 160 mm and from 80 to 280 mm, for maintenances of soil water in ranges 60-100% and 80-100% of FWC, respectively. Maize yield increases as affected by irrigation (means of two irrigation treatments) were as follows: 11% (2006), 18% (2007), 11% (2008), 8% (2009), 0% (2010) and 30% (2011). Nitrogen fertilization resulted also by yield increases of maize for 21% (B2) and 36% (B3).

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA