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Phosphorous balance on Costa Rican dairy farms
Balance de fósforo en fincas para la producción de leche en siete cantones de la región Huetar Norte y egión Central de Costa Rica
The objective was to quantify P use in 11 dairy farms located in the provinces of San Jose, Cartago and Alajuela. Data such as feed purchases, milk sales, purchase and removal of animals between January and December 2010 ...