1.20. Phenotype traits and grain yield elements of the maize hybrids Kn 625 and Kn M 625 in different plants density

During 2004-2005 years in the fields at the Maize Research Institute-Knezha on soil type – typical black earth and without irrigation, were conducted the trails with two of the most currency used maize hybrids Kn 625 and Kn M 625.
The hybrids were tested under plants density 4000 plant/da, 4600 plant/da, 5000 plant/da, 5600 plant/da and 6000 plant/da. The effect of the factor on the drowth, development and grain yield elements of the two hybrids is investigated. The received results show that the plants density influence on plants height, but this is most strongly expressed after the phase tasseling of maize and with augmetation on plants density decrease the individual productivity on the plants.