Effects of Chernozem Water Regime and Fertilising on Maize Yields Under Conditions of Direct Sowing
Uticaj vodnog režima černozema i đubrenja na prinos kukuruza u uslovima direktne setve
View/ Open
Author
Kresovic, Branka
Dragicevic, Vesna
Videnovic, Zivorad
Keywords
direct sowingfertilizing
chernozem
water regime
yield
maize
direktna setva
đubrenje
černozem
vodni režim
prinos
kukuruz
Metadata
Show full item recordAbstract
The results obtained in the ten-year trial (2000-2009) carried out under
agro-ecological conditions of Zemun Polje are presented in this study. The objective was
to determine effects of soil water regime (A) and the fertilizer rates (B) on the yield of
maize directly sown in chernozem. The trial was set up according to the block design
under conditions of rain fed and irrigation with the three NPK levels: B1 - Ø; B2 - 150
kg nitrogen ha-1, 105 kg phosphorus ha-1 and 75 kg potassium ha-1; B3 - 300 kg nitrogen
ha-1, 210 kg phosphorus ha-1 and 150 kg potassium ha-1. Maize was sown with the John
Deere–7200 MaxEmerge 2 planter. Results were processed by the factorial analysis of
variance and the LSD test, while the dependence of the yield on the water regime was
established by the regression analysis.
Obtained results showed that the formation of yield had been significantly affected
by the water regime and fertilizing. The average yield amounted to 7.25 t ha-1 and 9.31 t
ha-1 under rain fed and irrigation conditions, respectively. The following yields were
obtained on the average over fertilizing variants: B1- 6.46 t ha-1, B2- 8.74 t ha-1 and B3-
9.64 t ha-1. The yield of 7.74 t ha-1 can be expected in the variant B1, if 450 mm of water
enters the soil surface during the growing season. With 20 mm more water the yields
expected in variants B2 and B3 could be 10.60 t ha-1 and 11.70 t ha-1, respectively. U radu su prikazani rezultati desetogodišnjeg ogleda (2000-2009)
izvedenog u agroekološkim uslovima Zemun Polja. Cilj je bio da se utvrdi uticaj vodnog
režima zemljišta (A) i nivoa đubrenja (B) na prinos kukuruza, koji je sejan na černozemu
direktno u strnište. Ogled je bio postavljen po metodi blok sistema, u prirodnom i
irigacionom vodnom režimu, u varijantama primene sledećih količina NPK hraniva: B1-
Ø kg ha-1; B2 - 150 kg N ha-1, 105 kg P ha-1 i 75 kg K ha-1; B3- 300 kg N ha-1, 210 kg P
ha-1 i 150 kg K ha-1. Setva hibrida kukuruza ZP 704 je obavljana sejalicom John Deer–
7200 MaxEmerge 2. Rezultati prinosa su obrađeni analizom varijanse i LSD testom, a
regresionom analizom utvrđena je zavisnost prinosa i količine vode.
Rezultati pokazuju da su vodni režim zemljišta i đubrenje veoma značajno uticali na
formiranje prinosa kukuruza. U prirodnom vodnom režimu ostvaren je prosečan prinos
7,25 t ha-1, a u irigacionom 9,31 t ha-1. U proseku, po varijantama đubrenja dobijene su
sledeće vrednosti: B1- 6,46 t ha-1, B2- 8,74 t ha-1, B3-9,64 t ha-1. U varijanti B1 može se
očekivati maksimalani prinos 7,74 t ha-1, ako tokom vegetacionog perioda na površinu
zemljišta dospe 450 mm vode. Sa 20 mm više vode u varijantama B2 i B3 mogu se
očekivati prinosi 10,60 t ha-1 i 11,70 t ha-1.