Ecophysiological Responses of White Clover - Hybrid Ryegrass Mixture to Foliar Fertilisation

  • Daniel DUNEA Valahia University of Targoviste, Faculty of Environmental Engineering and Food Science, 18-24 Unirii Blvd., B1, Targoviste
  • Loredana Beatrice NEAGU FRĂSIN Valahia University of Targoviste, Faculty of Environmental Engineering and Food Science, 18-24 Unirii Blvd., B1, Targoviste
  • Niculae DINCĂ University of Agronomic Sciences and Veterinary Medicine Bucharest, Faculty of Agriculture, 59 Mărăști Blvd., Sector 1, Bucharest

Abstract

The rationale of the study was to check whether the association of hybrid ryegrass with white clover owing a moderate competition capacity, and optimal foliar fertilization will provide high and stable yields by reducing conventional fertilization rates. The experiment was carried out during two years of cropping with six growth cycles in a randomized block design with three replicates in Targoviste Piedmont Plain, South of Romania. In the first year, the plots received no nitrogen fertilisers in order to allow the biological potential development. In the second year, foliar fertilisation was applied six times in the fertilised variants during the vegetation season. The comparison between the six growth cycles showed that the biological potential of white clover in pure stand without foliar fertilisation was higher in the first cropping year than in the second one. Application of foliar fertilisation treatments enhanced the competition capacity of the hybrid ryegrass in the first production cycle of the second year. In white clover pure stand, the fertilisation increased the assimilatory areas from 3.6 to 4.8 (p<0.05). The contribution of hybrid ryegrass to the cumulative Leaf Area Index of species in the binary mixture was significant (4.7 no fertilisation; 4.9 foliar fertilisation), which revealed a low competition capacity of white clover in mixture (0.69 no fertilisation; 1.03 foliar fertilisation). In white clover-hybrid ryegrass mixtures, foliar fertilisation showed benefits in the first two growth cycles according to the phenophase particularities and weather conditions.

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Published
2015-06-17
How to Cite
DUNEA, D., NEAGU FRĂSIN, L. B., & DINCĂ, N. (2015). Ecophysiological Responses of White Clover - Hybrid Ryegrass Mixture to Foliar Fertilisation. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 43(1), 173-178. https://doi.org/10.15835/nbha4319918
Section
Research Articles