Relationships between growing media fertility, percolate composition and fertigation strategy in peat-substitute substrates used for growing ornamental shrubs

Marfà, Oriol; Lemaire, F.; Cáceres, Ramón; Giuffrida, F.; Guérin, Vincent

doi:10.1016/s0304-4238(01)00383-1

Cited by 34 publications

(27 citation statements)

References 27 publications

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“…In the NS treatments, N concentration in leachates did not correlate significantly to PR, probably because in these treatments a relatively low N concentration was applied periodically by fertigation and the N concentration in the growing medium solution was not usually high, as has been observed in previous experiments using analogous relatively low-concentration NS and monitoring N content in the substrate solution using the induced percolate method (Marfà et al, 2002). Thus, the leaching effect of PR in the NS treatments was not significantly correlated with the N concentration in leachates.…”

Section: Discussionmentioning

confidence: 70%

“…The NS was applied to the plants at two different doses (A and B). In the NSA treatment a relatively low-concentration NS was applied that had been previously assayed for V. tinus (Marfà et al, 2002). The NSB treatment dose had about 25% less N, P and K than dose A (Table 1).…”

Section: Fertilizer Treatmentsmentioning

confidence: 99%

“…of nursery runoff can also be attributed to geographic differences (Marfà et al, 2002;Garber et al, 2002), species-dependent nutritional requirements, the origin of the substrate used (Guérin et al, 2001) and the variety of irrigation and fertilizer strategies used (Fare et al, 1996;Bilderback, 2002). Headley et al (2001) reported a total N concentration from nursery runoff ranging from 1.35 to 18 mg L -1 and the majority of the N (> 70%) occurred as NO 3 -.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the experimental results obtained on the relationships between percolate composition and fertigation strategy using Viburnum tinus L., showed that a steady-state nutrient level in the root zone can be achieved when a modulated (by dilution) and relatively low concentration of NS is applied in fertigation. The release of nutrients, especially nitrates, can also be considerably reduced (Marfà et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Effects of climate and fertilization strategy on nitrogen balance in an outdoor potted crop of Viburnum tinus L.

Narváez

Cáceres

Marfà

2012

Span. j. agric. res.

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Little information is currently available on how fertilization management affects leachate composition and the plant nitrogen (N) uptake of crops under Mediterranean climate. The objectives of this study were to determine the effect of different fertilization strategies and doses on the composition of the leachates and the use of N by plants, to establish a N balance for the different fertilization strategies and doses used and to establish a linear regression model to predict N concentration in leachates from an outdoor potted crop of Viburnum tinus L. 'Eve Price'. Two fertilizations strategies, i.e. continuous fertigation (NS) and incorporated controlled-release fertilizer (CRF), were applied to the crop. The treatments were two NS doses (NSA: 57.4 mg NO 3 --N L -1 and NSB: 43.4 mg NO 3 --N L -1 ) and two CRF doses (CRFC: 5 g L -1 and CRFD: 7 g L -1 ). The NO 3 --N concentration in the leachates from the CRF treatments was high in the first weeks of growing (100-300 mg L -1 ). The efficiency of use of N was greater in the NSA treatment (9.2 g g -1 ). When CRFC was applied there was an increased loss of N by leaching (48 % of the total N). The concentration of N in the leachates for both fertilization strategies was found to be correlated with the variables substrate temperature and precipitation. Therefore, these variables must be considered when determining the dose of fertilizer to be added to a crop, especially when CRF are chosen, to avoid high losses of N by leaching.Additional key words: controlled-release fertilizer; fertigation; Mediterranean climate; nitrate pollution; nitrogen efficiency; woody ornamental. ResumenEfectos del clima y de la estrategia de fertilización en el balance de nitrógeno en un cultivo al exterior en contenedor de Viburnum tinus L.Existe poca información sobre el efecto de la estrategia de fertilización en la composición de los lixiviados y la absorción de nitrógeno (N) por un cultivo en clima mediterráneo. Los objetivos de este estudio fueron determinar el efecto de diferentes estrategias de fertilización y dosis en la composición de los lixiviados y en el uso del N por las plantas, establecer un balance de N basado en la estrategia de fertilización y dosis aplicadas y establecer un modelo lineal para predecir la concentración de N en los lixiviados de un cultivo de Viburnum tinus L. `Eve Price´. Se aplicaron al cultivo fertilizantes mediante fertirrigación continua ( ). Las pérdi-das de N por lixiviación aumentaron significativamente al aplicar el tratamiento CRFC (48% del N total). La concentración de N en los lixiviados de todos los tratamientos se correlacionó con las variables temperatura del sustrato y precipitación, por lo que éstas deben ser consideradas para determinar la dosis de fertilizantes a añadir a un cultivo, especialmente cuando se usan CRF, y así evitar elevadas pérdidas de N por lixiviación.

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Section: Discussionmentioning

confidence: 70%

Section: Fertilizer Treatmentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of climate and fertilization strategy on nitrogen balance in an outdoor potted crop of Viburnum tinus L.

Narváez

Cáceres

Marfà

2012

Span. j. agric. res.

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“…The NS was applied to the plants at two different doses (A and B). In the NS-A treatment, a relatively high-concentration NS was applied that had been previously assayed for other crops of outdoor ornamental pot plants (Marfà et al, 2002). The NS-B treatment dose had about 30% less N, P and potassium (K) than dose A (Table 1).…”

Section: Fertilizer Treatmentsmentioning

confidence: 99%

Effect of different fertilization strategies on nitrogen balance in an outdoor potted crop of Osteospermum ecklonis (DC.) Norl. ‘Purple Red’ under Mediterranean climate conditions

Narváez

Cáceres

Marfà

2013

Span. j. agric. res.

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Fertilization management and meteorological conditions can affect leachate composition and the balance of nitrogen (N) added during the cultivation of ornamentals. The main objectives of this study were to estimate the N balance components and to establish relationships between the N concentration in leachates and meteorological variables when different fertilization strategies are used in an outdoor potted crop of Osteospermum ecklonis (DC.) Norl. ‘Purple Red’. Two fertilizations strategies, i.e. continuous fertigation (NS) and incorporated controlled-release fertilizer (CRF), were applied to the crop. The treatments were two NS doses (NO3-N concentration in each NS, NS-A: 154 mg L-1 and NS-B: 112 mg L-1) and two CRF doses (CRF-C: 5.0 g L-1 of substrate and CRF-D: 2.5 g L-1 of substrate). The N loss by leaching was higher in the NS-A treatment than in the other ones (1.1 g pot-1, 11% of total available N). The amount of N accumulated by the plants was higher in the NS treatments than in the CRF treatments (average 2.5 g pot-1, 29.5% of total available N). However the efficiency of use of N was the greatest in the CRF-D treatment (23.9 g dry matter produced g-1 N supplied). About 50% of the total available N was measured in the substrate in all treatments (average 3.8 g pot-1). The concentration of N in the leachates for the two CRF treatments did not correlate with the substrate temperature or precipitation. The N released from the CRF matched the nutritional requirements of the plants better than the N applied by continuous fertigation.

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Perspectives in dryland restoration: approaches for climate change adaptation

et al. 2012

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Relationships between growing media fertility, percolate composition and fertigation strategy in peat-substitute substrates used for growing ornamental shrubs

Cited by 34 publications

References 27 publications

Effects of climate and fertilization strategy on nitrogen balance in an outdoor potted crop of Viburnum tinus L.

Effects of climate and fertilization strategy on nitrogen balance in an outdoor potted crop of Viburnum tinus L.

Effect of different fertilization strategies on nitrogen balance in an outdoor potted crop of Osteospermum ecklonis (DC.) Norl. ‘Purple Red’ under Mediterranean climate conditions

Perspectives in dryland restoration: approaches for climate change adaptation

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