Influence of fertilizers on temporary pastures on reddish brown soil in Moara Domneasca [Romania]
1988
Motca, G. (Institutul Agronomic Nicolae Balcescu, Bucuresti (Romania)) | Barbulescu, C. | Oprea, G. | Stefan, D.
During 1983-1986 the influence of nitrogen fertilizer on irrigated temporary pastures composed of 50 % grasses and 50 % perennial leguminosae was studied in the Plain of Vlasia, of Moara Domneasca, on a reddish-brown soil with 50 kg/ha P2O5 as background. Nitrogen rates over 50 kg/ha (N100-150) were split dressed: 50 kg/ha in spring and 50 kg/ha after the first and second mowing. The mixtures recommended are: Dactylis glomerata - Poiana or Bromus inermis - Orfeu, associated with Trifolium pratense - Select 30 % and Trifolium repens Ladino-Crau 20%. In these mixtures, gradual nitrogen rates had a reduced effect on dry matter yield, since leguminosae maintained their 50 % average participation, throughout the exploitation period. Small and moderate nitrogen rates (N50-100) resulted on 3 year average yields of 10 t/ha dry matter with 16-18 % crude protein content and crude protein yields between 1,400 and 1,500 kg/ha in the first year of exploitation
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