2012
DOI: 10.1590/s1516-35982012000500004
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Abstract: -Phosphorous application effects were evaluated on ryegrass dry matter (DM) accumulation, root development and plant tissue concentration of phosphorus, nitrogen and carbon aiming to determinate the nutritional status of the pasture, as well as to verify the possibility to establish a phosphorus dilution curve for this pasture. Also, the development of phosphorus and ryegrass cultivated with the residual effect of phosphorus fertilization was determined. The experiment was carried out in Pinhais County -Paraná… Show more

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Cited by 4 publications
(4 citation statements)
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References 20 publications
(22 reference statements)
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“…Similar P concentrations and seasonal trends were reported by Wunsch et al (2006) for NG in the south of Brazil, with an average of 0•7 g/kg of P in the forage. The concentration of P in the herbage biomass of NG was insufficient for the nutrition of the calves, according to NRC (1996) and the critical levels reported by Karn (2001), but are within the range reported by other authors in pastures of this region (Berretta 1998;Mazza et al 2012). On the other hand, given the relatively low stocking rates, the calves were probably able to select the younger leaves, which are likely to present higher nutrient contents than trimmed herbage (Suttle 2010;Avondo et al 2013).…”
Section: Discussionsupporting
confidence: 83%
“…Similar P concentrations and seasonal trends were reported by Wunsch et al (2006) for NG in the south of Brazil, with an average of 0•7 g/kg of P in the forage. The concentration of P in the herbage biomass of NG was insufficient for the nutrition of the calves, according to NRC (1996) and the critical levels reported by Karn (2001), but are within the range reported by other authors in pastures of this region (Berretta 1998;Mazza et al 2012). On the other hand, given the relatively low stocking rates, the calves were probably able to select the younger leaves, which are likely to present higher nutrient contents than trimmed herbage (Suttle 2010;Avondo et al 2013).…”
Section: Discussionsupporting
confidence: 83%
“…La literatura reporta incrementos en la producción de biomasa en raigrases perennes, anuales e híbridos, debido a niveles crecientes de nitrógeno, que variaron entre 4 y 24 kg de materia seca por kg de N aplicado (Cuadro 6) (Chaverra et al, 1967;Wilkins et al, 2000;Shiel et al, 2001;Cuesta, 2011;Mazza et al, 2012), rango en el cual se encuentran los valores obtenidos en este trabajo (7,8 y 8,9 kg de materia seca por kg de nitrógeno aplicado). La diferencia respecto a los trabajos realizados en otros países puede estar asociada con la baja precipitación presentada en los meses de enero y febrero en los departamentos donde se desarrollaron las evaluaciones (Figura 1), en relación con los requerimientos hídricos de los raigrases, que pueden variar entre 48 y 100 mm al mes (Bernal, 1998).…”
Section: Discussionunclassified
“…Se han reportado incrementos en la producción de materia seca que varía entre 1 y 4 kg por kg de P 2 O 5 aplicado (Mazza et al, 2012) (Cuadro 6). En este trabajo se encontraron tasas de acumulación de biomasa entre -0,07 y 1,8 kg MS en Mosquera y Tuta, respectivamente, debido a la aplicación de la fertilización fosfórica.…”
Section: Nutrienteunclassified
“…Fageria et al (1995) reported that increasing levels of lime tended to reduce P uptake, while lower P content in leaves could be caused by the antagonism between P and Ca (Jaravan and Poldma, 2004). In addition, as ryegrass developed and dry mass accumulation increased, phosphorus tissue content decreased due to the dilution effect (Mazza et al, 2012). Therefore the P fertilization should be considered in red clover cultivation in very acid soils.…”
Section: Discussionmentioning
confidence: 99%