Effect of fertilization [lime, Sulfomag] and management on yield and botanical composition of a fescue - subterranean clover, ninth region
1993
Romero Y, Oriella (Instituto de Investigaciones Agropecuarias, Temuco (Chile). Estacion Experimental Carillanca) | Rojas G, Claudio
The study was carried out at Carillanca Research Station (INIA) Temuco, Chile during 1989/90. The pasture was established on April 1982 with 16 kg/ha of fescue and 8 kg/ha of subclover and was annually fertilized with 54.4 kg of nitrogen and 18.4 kg of phosphorus as saltpeter and ammonium phosphate. The aim of this study was to improve the subclover content in an old subclover/fescue mixture. Two mechanical treatments, with and without tyne plough and tree fertilizer subtreatments were evaluated: check, 500 kg/ha of lime and 100 kg/ha of magnesium sulfate. The treatments were arranged in a split design with three replicates. The partial and the total dry matter production, botanical composition, plant number and nodulation were measured. The data obtained were submitted to variance analysis, Duncan Test and Orthogonal Contrast using the statistical SAS program. The results showed that total D.M. yield and the subclover content in the mixture were not influenced by the mechanical treatments (P 0.05). The fertilizer treatments, lime and sulpomag, increased the dry matter yield and subclover content in the mixture from 13 to 14% in relation to the check (P
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