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The effect of defoliation management on the productivity and botanical composition of the pure stands of forage grasses

doc. Krešimir Bošnjak ; Sveučilište u Zagrebu Agronomski fakultet, Svetošimunska 25, Zagreb, Hrvatska
prof. Josip Leto ; Sveučilište u Zagrebu Agronomski fakultet, Svetošimunska 25, Zagreb, Hrvatska
prof. Marina Vranić ; Sveučilište u Zagrebu Agronomski fakultet, Svetošimunska 25, Zagreb, Hrvatska
Hrvoje Kutnjak ; Sveučilište u Zagrebu Agronomski fakultet, Svetošimunska 25, Zagreb, Hrvatska
doc. Darko Uher ; Sveučilište u Zagrebu Agronomski fakultet, Svetošimunska 25, Zagreb, Hrvatska
Nikolina Iljkić, dipl.ing. ; Sveučilište u Zagrebu Agronomski fakultet, Svetošimunska 25, Zagreb, Hrvatska

Abstract

The aim of this study was to investigate the effect of defoliation management (A- frequent defoliation – defoliation at 18 cm herbage
height; B - moderate frequent defoliation – A+6 days and infrequent defoliation – A+12 days) on the dry matter (DM) yield and the
botanical composition of the pure stands of orchardgrass, meadow fescue and tall fescue. A specific reaction of the investigated grass
species on the defoliation management was found for DM yield (P<0.05). The differences in relative share of grasses (P<0.05) and
forbs (P<0.05) in DM yield among the defoliation managements were dependent on year. The significant differences between grass
species were found for relative share of grasses (P<0.001) and forbs (P<0,001) in the DM. The results indicate the importance of the
decision about appropriate defoliation management for different forage grass species.

Keywords

defoliation management; forage grasses; yield; botanical composition

Hrčak ID:

112130

URI

https://hrcak.srce.hr/112130

Publication date:

1.10.2013.

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