Biotechnology in Animal Husbandry 2015 Volume 31, Issue 4, Pages: 567-575
https://doi.org/10.2298/BAH1504567M
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The effect of crop density on yield of forage maize
Mandić V. (Institute for Animal Husbandry, Belgrade)
Krnjaja V. (Institute for Animal Husbandry, Belgrade)
Bijelić Z. (Institute for Animal Husbandry, Belgrade)
Tomić Z. (Institute for Animal Husbandry, Belgrade)
Simić A. (Faculty of Agriculture, Crop science, Belgrade)
Stanojković A. (Institute for Animal Husbandry, Belgrade)
Petričević M. (Institute for Animal Husbandry, Belgrade)
Caro-Petrović V. 
(Institute for Animal Husbandry, Belgrade)
The aim of this investigation was to estimate the effects of crop density on
the plant height (PH), stem diameter (SD), number of leaves per plant (NL),
forage yield hectare-1 (FY), dry matter yield hectare-1 (DMY), stem
percentage (SP), leaf percentage (LP) and ear percentage (EP) in two maize
hybrids of FAO maturity group 600 (ZP 684 and NS 6010). Field trials were
carried out in rainfed farming in the Srem region (location Putinci:
44°59′19" North and 19°58′11" East) during years 2007 and 2008. Three crop
densities were compared: G1 - 51,020 plants ha-1, G2 - 59,524 plants ha-1 and
G3 - 71,429 plants ha-1 (corresponding to spacing of 70 × 28, 70 × 24, and 70
× 20 cm). Plots were organized as completely randomized block system design
in four replications. PH (265.45 cm), SD (2.40 cm), FY (68.63 t ha-1) and DMY
(24.63 t ha-1) were significantly higher in 2007 than in 2008 (261.78 cm,
2.32 cm, 61.17 t ha-1 and 21.04 t ha-1, respectively). Hybrid NS 6010 had
significantly higher PH (266.23 cm), SD (2.39 cm) and NL (14.75) than hybrid
ZP 684 (261.0 cm, 2.33 cm and 13.99, respectively). Increasing crop density
significantly increased the PH, FY, DMY and SP, and significantly decreases
the SD and EP. Therefore, crop density of 71,429 plants ha-1 (70 x 20 cm) can
be recommended for growing hybrids of FAO 600 maturity group in climatic
conditions of Srem in order to achieve high yields of forage and dry matter.
Keywords: crop density, dry matter yield, forage yield, maize
Projekat Ministarstva nauke Republike Srbije, br. TR 31053