Response of Pensacola Bahiagrass to Nitrogen Fertilization<sup>1</sup>

Beaty, E. R.; McCreery, R. A.; Powell, John R

doi:10.2134/agronj1960.00021962005200080009x

Cited by 23 publications

(31 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7) indicate that bahiagrass coped with the defoliation treatments at the cost of stolons. Thus, the results of this study confirm that stolons play a key role in defoliation tolerance in bahiagrass as the main storage organ supporting aboveground parts (Beaty et al 1970). On the contrary, the almost unchanged root masses during defoliation treatments (Fig.…”

Section: Sward Dynamics During Defoliation Treatmentssupporting

confidence: 80%

“…7) Hirata (2000) reported that rates of both leaf appearance and extension in bahiagrass increased with increased nitrogen rate. Beaty et al 1970, Hirata and Ueno 1993, Hirata 1994 which act as the main storage organ supporting aboveground growth (Beaty et al 1970, 1974, Hirata et al 1990). In the current study, stolons also showed a high biomass of 395 to 570 g DM m-2 at the commencement of defoliation treatments (Fig.…”

Section: Sward Dynamics During Defoliation Treatmentsmentioning

confidence: 99%

“…It is also widely distributed in the low-altitude regions of southwestern Japan. This grass forms a highly persistent sward which tolerates severe defoliation (Beaty et al 1970, Stanley et al 1977, Hirata 1993a, 1993b, Hirata and Ueno 1993. Beaty et al (1970) reported that bahiagrass performed well even under weekly cuttings at the soil surface level.…”

Section: Introductionmentioning

confidence: 99%

“…This grass forms a highly persistent sward which tolerates severe defoliation (Beaty et al 1970, Stanley et al 1977, Hirata 1993a, 1993b, Hirata and Ueno 1993. Beaty et al (1970) reported that bahiagrass performed well even under weekly cuttings at the soil surface level.However, how bahiagrass behaves under extremely severe defoliation is not fully explored. Only by applying such a condition, we can determine the limit to which each mechanism behind the persistence of bahiagrass successfully works, and understand the overall ability of the grass to tolerate defoliation.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Responses of bahiagrass to nitrogen and defoliation

Hirata¹,

Pakiding²

2003

REM

View full text Add to dashboard Cite

Pensacola bahiagrass (Paspalum notatum Flugge) swards pretreated with fertilizer nitrogen rates of 0 and 66-99 kg N ha1 year-1 were exposed to repeated, severe defoliation (i.e., removal of all laminae) of every day (Dl), every 2 days (D2), and every 4 days (D4). Responses of the grass were monitored in terms of tiller survival, lamina production and changes in the mass of the stubble-stolon-root system, in an effort to investigate the effects of nitrogen rate and defoliation frequency on defoliation tolerance, to examine differences in survival ability of tillers among tiller age cohorts, and to evaluate contribution of the stubblestolon-root system to defoliation tolerance. With the progress of defoliation treatments over 12 weeks, the swards degraded with decreasing tiller density, lamina production, and mass of stubble and stolons. Defoliation tolerance in terms of tiller survival was influenced only by defoliation frequency (Dl D2 < D4), with no significant effect of nitrogen fertilizer rate. There were no differences in survival ability of tillers among age cohorts formed before the defoliation treatments, suggesting that all tillers in bahiagrass were able to share energy and nutrients in connecting stolons under severe defoliation. It was confirmed that stolons play a key role in defoliation tolerance in bahiagrass as the main storage organ supporting aboveground parts, whereas the contribution of roots seems nil.Key Words: Paspalum notatum, defoliation tolerance, tiller survival, lamina production, stubble-stolon-root system Resumen Praderas de "Bahiagrass" (Paspalum notatum Flugge) pretratatdas con dosis de fertilizacion nitrogenada de 0 y 66-99 kg N ha-1 ano-1 fueron expuestas a defoliacion severa (i.e. remocion de toda la lamina) y repetida, cada dia (D1), cada 2 dias (D2) y cada 4 dias (D4). La respuesta del zacate fue monitoreada en terminos de sobrevivencia de hijuelos, produccion de tejido laminar de la hoja y cambios en la biomasa del sistema rastrojo-estolonraiz, esto en un esfuerzo per investigar los efectos de la dosis de nitrogeno y la frecuencia de defoliacion en la tolerancia a la defoliacion, para examinar las diferencias en la habilidad para sobrevivir de los hijuelos entre generaciones de ellos y para evaluar la contribucion del sistema rastrojo-estolon-raiz a la tolerancia at a defoliacion. Al progresar los tratamientos de defoliacion hasta 12 semanas, la pradera se degrado con la disminucion de la densidad de hijuelos, la produccion de lamina y la masa de estolones y rastrojo. La tolerancia a la defoliacion en terminos de sobrevivencia de hijuelos fue influenciada solo por la frecuencia de defoliacion (D1 D2 < D4) sin un efecto significativo de la dosis de fertilizacion. No hubo diferencias en la habilidad de sobrevivencia de los hijuelos entre generaciones de hijuelos formadas antes de los tratamientos de defoliacion, sugiriendo que bajo condiciones de defoliacion severa todos los hijuelos en "Bahiagrass" fueron capaces de compartir energia y nutrientes entre los estolones co...

show abstract

Section: Sward Dynamics During Defoliation Treatmentssupporting

confidence: 80%

Section: Sward Dynamics During Defoliation Treatmentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Responses of bahiagrass to nitrogen and defoliation

Hirata¹,

Pakiding²

2003

REM

View full text Add to dashboard Cite

show abstract

“…It is also well adapted to the low-altitude regions of south-western Japan, and used for both grazing and hay [5]. This grass forms a highly persistent sward under a wide range of management [6][7][8][9][10][11]. Among tropical forage species, bahiagrass has been most detailedly studied in terms of the morphogenetic and structural components, providing a good deal of information for modeling sward dynamics of the grass [12][13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Linking Management, Environment and Morphogenetic and Structural Components of a Sward for Simulating Tiller Density Dynamics in Bahiagrass (Paspalum notatum)

Hirata

2015

Agriculture

View full text Add to dashboard Cite

Abstract:A model which describes tiller density dynamics in bahiagrass (Paspalum notatum Flügge) swards has been developed. The model incorporates interrelationships between various morphogenetic and structural components of the sward and uses the inverse of the self-thinning rule as the standard relationship between tiller density and tiller weight (a density-size equilibrium) toward which tiller density progressively changes over time under varying nitrogen (N) rates, air temperature and season. Water and nutrient limitations were not considered except partial consideration of N. The model was calibrated against data from swards subjected to different N rates and cutting intensities, and further validated against data from a grazed sward and swards under different cutting intensities. As the calibration and validation results were satisfactory, the model was used as a tool to investigate the responses of tiller density to various combinations of defoliation frequencies and intensities. Simulations identified defoliation regimes required for stabilizing tiller density at an arbitrary target level, i.e., sustainable use of the sward. For example, the model predicted that tiller density can be maintained at a medium level of about 4000 m −2 under conditions ranging from weekly cuttings to an 8 cm height to 8-weekly cuttings to 4 cm. More intense defoliation is needed for higher target tiller density and vice versa.

show abstract

Beef cattle feeding costs as impacted by hay yield and quality

et al. 2021

View full text Add to dashboard Cite

Reducing dependence onstored feed, particularly dry hay, is a major factor in beef cattle production systems in the southeastern United States. Increasing the nutritive value of the hay that is fed, however, can ultimately reduce total feed costs and boost profitability. A field trial was conducted in east-central Mississippi evaluating several warm-season perennial grass hay crops under varying N and harvest regimes in order to assess their ability to meet beef cow nutritional demands and to estimate total feed costs. Cultivars included 'Argentine' (ARG) and 'Pensacola' (PEN) bahiagrass (Paspalum notatum Flueggé), 'Common' (COM) and 'Cheyenne II' (CHE) bermudagrass (Cynodon dactylon L.), and 'Pete' (PET) eastern gamagrass (Tripsacum dactyloides L.). Plots were assigned to an annual N treatment (0, 112, 224, 336, or 448 kg N ha −1 yr −1 ) and a harvest frequency (30, 40, 60, and 120 d). Argentine produced the greatest amount of forage mass (FM) at the 448 kg N ha −1 yr −1 rate (14,422 kg DM ha −1 ). Increasing N rates resulted in greater mean crude protein (CP) values, whereas harvest frequency had a greater impact on total digestible nutrients (TDN). Total feed costs were calculated based on field trial data and were combined with either soybean [Glycine max (L.) Merr.] hulls (SH) or corn (Zea mays L.) gluten (CG) to match nutritional demand. The most economical feed costs were those where hay was fertilized (>224 kg N ha −1 yr −1 ) and harvested three or more times a year and was combined with CG. INTRODUCTIONOver 1 million hectares of non-irrigated dry hay are produced annually in Mississippi, Alabama, Louisiana, Georgia, and Florida with an average yield of 5,800 kg ha −1 (USDA-NASS, 2017). From 1976 to 2014, hay production per cow in the southeastern United States increased 136% (Beck et al., 2016).

show abstract

Response of Pensacola Bahiagrass to Nitrogen Fertilization¹

Cited by 23 publications

References 0 publications

Responses of bahiagrass to nitrogen and defoliation

Responses of bahiagrass to nitrogen and defoliation

Linking Management, Environment and Morphogenetic and Structural Components of a Sward for Simulating Tiller Density Dynamics in Bahiagrass (Paspalum notatum)

Beef cattle feeding costs as impacted by hay yield and quality

Contact Info

Product

Resources

About

Response of Pensacola Bahiagrass to Nitrogen Fertilization1

Cited by 23 publications

References 0 publications

Responses of bahiagrass to nitrogen and defoliation

Responses of bahiagrass to nitrogen and defoliation

Linking Management, Environment and Morphogenetic and Structural Components of a Sward for Simulating Tiller Density Dynamics in Bahiagrass (Paspalum notatum)

Beef cattle feeding costs as impacted by hay yield and quality

Contact Info

Product

Resources

About

Response of Pensacola Bahiagrass to Nitrogen Fertilization¹