The effects of N fertilizer on the quality of Italian ryegrass sown on different vegetation area
2007
Simic, A., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Djordjevic, N., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Vuckovic, S., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Maletic, R., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Sokolovic, D., Institut za krmno bilje, Krusevac (Serbia) | Markovic, J., Institut za krmno bilje, Krusevac (Serbia)
The Italian ryegrass forage quality was investigated by means of crude protein and fibre content. The Italian ryegrass was produced at the first cut of the first production year. Interrow spacing did not have any statistical significance for protein and fibre content. The protein content decreased by increasing seeding rate from 5 to 20 kg/ha, in average from 159.8 to 144.5 g/kg, and increased by increasing amount of N fertilizer from control to 150 kg/ha in average 133 - 169 g/kg. Fibre content did not have statistical significance, i.e. it had lower variation. There is a negative correlation between the protein and fibre content (P is less than 0.05), but lower correspondence r= -0.23. Earlier cutting of Italian ryegrass had more important influence on fibre content, because when heading starts, crude fibre content is increased.
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