Phosphorus Fertilization and Beef Production on New Seeded Pastures in the Rolled Pampa of Argentina
Publication Date
1989
Description
In general there were not responses to phosphorus fertilization in pastures north of Salado River in Buenos Aires province, even though there are good responses south of this river. In a previous work in Pergamino, a 7 year old fescue (Festuca arundinacea Schreb) and white clover (Trifolium re pens) pasture was fertilized with 100 kg calcium superphosphate getting significant differences in A.D.G. and live weight increase per hectare, specially in winter months. There was no response in botanical composition, forage digestibility or crude protein content. (Maddaloni et al., 1982). To get the optimum doses for fertilization is not an easy task, because the last product, beef or milk can be influenced by many other factors besides forage production increase (Arosteguy and Gardner, 1978). In countries like Argentina, where the prices of agricultural inputs are high in relation with the final product price, the optimum doses for fertilizer are very important. Vallerini and Duranoma (1981) found the answer to ADG and beef production per hectare at 50 kg of P205 using high stocking rate. There was nos answer at low stocking rate. For some Argentine authors, tall fescue is a species that produces very low ADG. (Arosteguy et al., 1973). But in spite of these comments Maddaloni et al. (1977) in Pergamino obtained good ADG at the same level as with other perennial grasses. The purpose of the trial was to evaluate the influence of phosphorus fertilization on forage production and animal gains in a fescue- white clover-alfalfa new pasture.
Citation
Josifovich, J A.; Maddaloni, J; and Bertin, O D., "Phosphorus Fertilization and Beef Production on New Seeded Pastures in the Rolled Pampa of Argentina" (2025). IGC Proceedings (1989-2023). 62.
https://uknowledge.uky.edu/igc/1989/session10/62
Included in
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Phosphorus Fertilization and Beef Production on New Seeded Pastures in the Rolled Pampa of Argentina
In general there were not responses to phosphorus fertilization in pastures north of Salado River in Buenos Aires province, even though there are good responses south of this river. In a previous work in Pergamino, a 7 year old fescue (Festuca arundinacea Schreb) and white clover (Trifolium re pens) pasture was fertilized with 100 kg calcium superphosphate getting significant differences in A.D.G. and live weight increase per hectare, specially in winter months. There was no response in botanical composition, forage digestibility or crude protein content. (Maddaloni et al., 1982). To get the optimum doses for fertilization is not an easy task, because the last product, beef or milk can be influenced by many other factors besides forage production increase (Arosteguy and Gardner, 1978). In countries like Argentina, where the prices of agricultural inputs are high in relation with the final product price, the optimum doses for fertilizer are very important. Vallerini and Duranoma (1981) found the answer to ADG and beef production per hectare at 50 kg of P205 using high stocking rate. There was nos answer at low stocking rate. For some Argentine authors, tall fescue is a species that produces very low ADG. (Arosteguy et al., 1973). But in spite of these comments Maddaloni et al. (1977) in Pergamino obtained good ADG at the same level as with other perennial grasses. The purpose of the trial was to evaluate the influence of phosphorus fertilization on forage production and animal gains in a fescue- white clover-alfalfa new pasture.
