Litter-Fall In a Pinus radiata Forest: The Effect of Irrigation and Fertilizer Treatments

Cromer, R. N.; Tompkins, D.; Barr, N. J.; Williams, E. R.; Stewart, H. T. L.

doi:10.2307/2403056

Cited by 27 publications

(12 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These increases were most likely a result of the 42 and 20% increases observed in number of fascicles and fascicle length as a result of fertilization and irrigation. Though the 20% increase in fascicle length as a result of F + I treatment over that of the C plot are lower than figures reported by Gholz (1986) or Cromer (1984) they could still substantially increase flush leaf area. Also, the 30% increase in fascicle length reported by Gholz was for 26-yearold slash pine as a result of heavy fertilization on wet sites with different soil characteristics than were present in this study.…”

Section: Fertilization × Irrigation Treatment Interactionscontrasting

confidence: 64%

See 1 more Smart Citation

Effect of carbon dioxide, fertilization and irrigation on loblolly pine branch morphology

Murthy

Dougherty²

1997

Trees

View full text Add to dashboard Cite

AbstractmFoliage and wood parameters of branches of 12-year-old loblolly pine (Pinus taeda L.) trees were characterized after 21 months of exposure to fertilizer, irrigation and elevated CO2 treatments. Branches of loblolly pine trees were enclosed in plastic chambers and exposed to ambient, ambient +175 and ambient +350 umol mol -1 CO2 concentrations. Measurements of foliage and wood at the fascicle, flush and branch levels were made at the end of the 21 month study period. The +350 CO2 treatment did not significantly increase fascicle radius or length but did increase the number of fascicles on the first flush. Fertilization significantly increased fascicle radius and length, while irrigation significantly increased number of fascicles and flush length of first flush. The +350 CO2 treatment also significantly increased flush length of the first flush. Significant interaction of fertilization and irrigation with CO2 was observed for fascicle length. Significant interactions of fertilization and irrigation were also observed for flush length, number of fascicles and fascicle length. Observed increases in fascicle radius, fascicle length, number of fascicles and flush length may have been responsible for the significantly higher flush leaf area observed for the all three treatments. Also, a combination of fertilization and irrigation increased leaf area by 82% compared to that in the control when averaged across CO2 treatments. At the branch level +350 CO2 treatment significantly increased shoot length but not the number of flushes on the branch. In general with the exception of bark density and total number of needle scales, neither fertilization nor irrigation had any significant effect on other branch level parameters. Results from this study indicate that with 'global change' an increase in CO2 alone may increase leaf area via an increase in flush length and number of fascicles. Combining increases in CO2 with fertilization and irrigation could greatly enhance leaf area which when coupled to observed increases in net photosynthesis as a result of elevated CO2 could greatly increase productivity of loblolly pine trees.

show abstract

Section: Fertilization × Irrigation Treatment Interactionscontrasting

confidence: 64%

“…An increase in fascicle number and, to some degree, an increase in flush length could contribute to the observed 44.5 and 42% increases in foliage mass and area due to irrigation. A 37% increase in fascicle mass per unit fascicle length as a result of irrigation has been reported by Cromer et al (1984).…”

Section: Irrigation Treatment Effectsmentioning

confidence: 79%

Effect of carbon dioxide, fertilization and irrigation on loblolly pine branch morphology

Murthy

Dougherty²

1997

Trees

View full text Add to dashboard Cite

show abstract

“…This pattern of needlefall is consistent with the ®ndings of Raison et al (1992) in a study located 25 km west of this site, where water stress caused peak needlefall to occur in the summer/autumn period. Baker (1983) and Cromer et al (1984) also found that in drier environments needlefall peaks during summer, whereas in areas with non-limiting rainfall or irrigation, it peaks from autumn to early winter (Will, 1959;Versfeld, 1981;Raison et al, 1992). Falls of the`other' component ( Figure 8), composed mostly of strobili, occur in spring, which is consistent with the¯owering pattern (Cromer et al, 1984).…”

Section: Pine Litterfallmentioning

confidence: 52%

Litterfall, litter and associated chemistry in a dry sclerophyll eucalypt forest and a pine plantation in south-eastern Australia: 1. Litterfall and litter

Crockford

Richardson

1998

Hydrol. Process.

View full text Add to dashboard Cite

Abstract:Litterfall was measured in a dry schlerophyll eucalypt forest and a nearby Pinus radiata plantation of similar tree density and basal area near Canberra in south-eastern Australia. Total annual litterfall for the eucalypts was 329 g m À 2 , compared with 180 g m À2 for the pines, with the bark component being 52 g m À 2 for eucalypts and zero for pines. Barkfall did not occur for the eucalypts during the drought of 1982±1983 but complete bark shedding occurred during the subsequent very wet year when barkfall was 177 g m À 2 for Eucalyptus rossii and 146 g m À2 for Eucalyptus mannifera (9 . 3 and 7Á6 g m À2 of basal area, respectively). Barkfall of E. rossii responded to rainfall in the period autumn to early summer, whereas E. mannifera responded to summer rainfall.In the eucalypt forest¯oor-litter was strati®ed into a surface layer where the components were substantially intact, and a cohesive layer where the components were fragmented and bound together by fungal hyphae. The amount and residence times of loose and cohesive¯oor-litter were 1056 g m À2 and 3 . 2 years, respectively, for the loose litter layer; and 1164 g m À2 and 3 . 5 years for the cohesive layer. The litter biomass represented 17% of the estimated total above-ground biomass of 127 tonnes ha À 1 . A previous study showed roots to be 25% of total biomass, suggesting a total biomass of 167 tonnes ha À1 . #

show abstract

“…Reich and Borchert (1984) also showed how drought constrains different plant phenologies and litter fall in tropical forests. Different studies have reported this relationship between dry conditions during the growth period and the timing of needle fall in different coniferous forests (Cromer et al, 1984;Kumar Das and Ramakrishnan, 1985;Hennessey et al, 1992;Pausas, 1997). Huebschmann et al (1999) modelled annual litter fall in Pinus echinata Mill.…”

Section: Discussion and Concluding Remarksmentioning

confidence: 90%

Litter fall in Mediterranean Pinus pinaster Ait. stands under different thinning regimes

Roig¹,

Rı́o²,

Cañellas³

et al. 2005

Forest Ecology and Management

View full text Add to dashboard Cite

Litter-Fall In a Pinus radiata Forest: The Effect of Irrigation and Fertilizer Treatments

Cited by 27 publications

References 17 publications

Effect of carbon dioxide, fertilization and irrigation on loblolly pine branch morphology

Effect of carbon dioxide, fertilization and irrigation on loblolly pine branch morphology

Litterfall, litter and associated chemistry in a dry sclerophyll eucalypt forest and a pine plantation in south-eastern Australia: 1. Litterfall and litter

Litter fall in Mediterranean Pinus pinaster Ait. stands under different thinning regimes

Contact Info

Product

Resources

About