Theme 04: Soil Fertility and Plant Nutrition

Description

The experiment was carried out in the southern of Brazil, by direct sowing ryegrass (Lolium multiflorum), white clover (Trifolium repens), birds foot trifolium (Lotus corniculatus) and red clover (Trifolium pratensis) on native pasture. Herbicide Glyfosate was previously applied on this native pasture. The treatments were T1 -seed sowing in row with half fertilizer in row and half broadcasting; T2 – seed sowing in row with all fertilizer in row; T3 – seed sowing in row and all fertilizer broadcasting; T4 – seed and fertilizer broadcasting. The pasture was evaluated by two cuts in 1998 and three cuts in 1999. Considering cut means for two years, treatments T1 and T2 produced the higher dry matter yield and no difference were observed between them, however, both treatments differed (P< 0.05) from T3 and T4. The best legume-grass mixture in the pasture were obtained in the treatments T1 and T2.

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Evaluation of Fertilizing Methods on the Establishment of Pasture Species on Native Pasture by Direct Sowing

The experiment was carried out in the southern of Brazil, by direct sowing ryegrass (Lolium multiflorum), white clover (Trifolium repens), birds foot trifolium (Lotus corniculatus) and red clover (Trifolium pratensis) on native pasture. Herbicide Glyfosate was previously applied on this native pasture. The treatments were T1 -seed sowing in row with half fertilizer in row and half broadcasting; T2 – seed sowing in row with all fertilizer in row; T3 – seed sowing in row and all fertilizer broadcasting; T4 – seed and fertilizer broadcasting. The pasture was evaluated by two cuts in 1998 and three cuts in 1999. Considering cut means for two years, treatments T1 and T2 produced the higher dry matter yield and no difference were observed between them, however, both treatments differed (P< 0.05) from T3 and T4. The best legume-grass mixture in the pasture were obtained in the treatments T1 and T2.