Foliar damage to ornamental trees sprinkler-irrigated with reuse water

We investigated foliar damage to five landscape species sprinkler irrigated with either reuse water or one of five synthesized saline waters that contained elevated single salts mixed with Colorado River water, all having similar electrical conductivities. The experiment allowed us to compare the impact of elevated concentrations of Na, Mg, Ca, Cl, and SO4 on an index of visual damage (IVD), tissue ion concentrations, and spectral reflectance. Waters containing elevated concentrations of MgCl2 or NaCl caused greater foliar damage than did MgSO4, Na2SO4, CaSO4, or reuse water, as recorded in higher IVD values (p < 0.05). Privet and elm were damaged to a greater extent (higher IVD values) than were desert willow, guava and laurel (p < 0.05). Higher IVD values were recorded for all species irrigated with the MgCl2 waters, with mortality recorded in privet. Tissue nutrient concentrations were correlated with the IVD values. In the case of guava, 61% of the variability in the IVD could be accounted for based on N, P and K (P < 0.01). On a treatment basis, the single salts added to the municipal water showed little correlation with the IVD values, except in the case of MgCl2, where Mg was included in the regression equation (r2 = 0.82, P < 0.01, IVD↑ as S04↓, Mg and P↑). Eleven different spectral indices separated based on treatment and/or species (P < 0.05). In elm, 70% of the variability in the IVD could be accounted for by including Red Edge, Normalized Difference Vegetation Index (NDVI) and Water Band Index (WBI)/NDVI. A mixed response was observed to a post 30-day irrigation rinse in an attempt to reduce IVD values. Based on our results, care should be given to monitoring not only the EC (and osmotic potential) but also the ionic composition when saline waters are blended with other water sources, with the aim of minimizing the concentration of Mg, Cl, and Na.

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Impact of Water Treatment on Foliar Damage of Landscape Trees Sprinkle Irrigated with Reuse Water

Journal of Environmental Horticulture ◽

10.24266/0738-2898-21.2.82 ◽

2003 ◽

Vol 21 (2) ◽

pp. 82-88

Author(s):

D. A. Devitt ◽

R. L. Morris ◽

D. S. Neuman

Keyword(s):

Tree Species ◽

Irrigation Treatment ◽

Leaf Tissue ◽

Potential Cost ◽

Ion Concentrations ◽

Reuse Water ◽

Quercus Virginiana ◽

Prunus Cerasifera ◽

Foliar Damage ◽

Chilopsis Linearis

Abstract An experiment was conducted on four container-grown tree species placed under five different irrigation reuse water treatments to determine the extent of foliar damage after a 14.5-month period. The tree species included Heritage oak (Quercus virginiana Mill. ‘Heritage’), desert willow (Chilopsis linearis (Cav.)/Sweet), flowering plum (Prunus cerasifera Ehrh ‘Atropurpurea’), and Chinese pistache (Pistacia chinensis Bunge). Plant response and an index of visual damage (IVD) were assessed at different times throughout the experiment. Ion concentrations in the leaf tissue were different for species (S) (p < 0.001), treatment (T) (Na, K, SO4, p < 0.05) and by a species by treatment interaction (S × T) (Na, Ca, Mg, K and SO4, p < 0.05). SPAD measurements varied by S (p < 0.001), T (p < 0.001) and by an S × T interaction (p < 0.045). SPAD measurements decreased as the leaf tissue Na concentration increased (SPAD = 47.49 – 12.46(Na), r2 = 0.38, p < 0.01). The IVD varied by S (p < 0.001), T (p < 0.001) and by an S × T interaction (p < 0.001). Na, Ca and SO4 tissue ion concentrations could account for 52% of the variability in the IVD (IVD =−1.93 + 4.63(Na) + 2.60(Ca)−0.001(SO4), p < 0.01). Because the irrigation treatment resulting in the lowest IVD was species dependent, irrigation treatment selection should be based upon an evaluation of the landscape species composition and the potential cost of implementing a given strategy. The response observed in this study suggests that a single universal irrigation strategy does not exist, indicating that emphasis must be placed on initial and replacement plant selection.

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Foliar Damage and Flower Production of Landscape Plants Sprinkle Irrigated with Reuse Water

HortScience ◽

10.21273/hortsci.40.6.1871 ◽

2005 ◽

Vol 40 (6) ◽

pp. 1871-1878 ◽

Cited By ~ 3

Author(s):

D.A. Devitt ◽

R.L. Morris ◽

L.K. Fenstermaker ◽

M. Baghzouz ◽

D.S. Neuman

Keyword(s):

Vegetation Index ◽

Vegetation Indices ◽

Additional Treatment ◽

Individual Species ◽

Regression Equations ◽

Ion Concentrations ◽

Flower Production ◽

Reuse Water ◽

Southern Nevada ◽

Foliar Damage

Nineteen flowering landscape species were sprinkle irrigated with either reuse water or fresh water, with an additional treatment of reuse water plus shade (solar radiation reduced by 24%), for 113 days during late summer and early fall in southern Nevada. The species selected were common to mixed landscape areas on golf courses in southern Nevada transitioning to reuse water. An index of visual damage (IVD) was assessed, along with an assessment of flower production, canopy temperature, tissue ion analysis and spectral reflectance. The IVD values separated based on species (p < 0.001), treatment (p < 0.001) and by a species by treatment interaction (p < 0.001). Irrigating with reuse water plus shade reduced the IVD compared to the reuse without shade in 7 of the 19 species (p < 0.05). When IVD values were included for all species, 40% of the variation in the IVD values could be accounted for if N, B, Ca, Mg, Na, and Zn were included in the regression equation. Higher r2 values were obtained when individual species were isolated, with regression equations differing based on tissue ion combinations [e.g., ice plant (Mesembryanthemum crystallinum L.) r2 = 0.81 IVD↑, Na↓, Mn↑]. Three vegetation indices chlorophyll index (CHL), red/far red (R/FR) and water band index/normalized difference vegetation index (WBI/NDVI)) accounted for 51% of the variation in the IVD values. As much as 72% of the variation in vegetation indices could be accounted for based on tissue ion concentrations when separated based on treatment, with Na being the only common ion in all of the highest correlations. Flower production was highest in the reuse plus shade treatment in all 13 species flowering during the experimental period, with as much as 86% of the flower production variation driven by different tissue ion concentrations [purple cup (Nierembergia hippomanica), r2 = 0.86, flowers↑, Mn↑, Zn↓]. Nine of the nineteen species had acceptable levels of foliar damage (IVD < 2.0). We believe that if the spray irrigation can be minimized (bubblers/drip) and/or partial shade provided, through multi-story landscape designs, a more favorable response will be observed.

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Use of Ornamental Trees in Dating of Abandoned Cemeteries on the Example of Thuja Occidentalis and Thuja Orientalis

Contemporary Trends in Geoscience ◽

10.2478/ctg-2012-0006 ◽

2012 ◽

Vol 1 (1) ◽

pp. 45-50

Author(s):

Magdalena Opała ◽

Leszek Majgier

Keyword(s):

Climatic Conditions ◽

The Other ◽

Lake District ◽

Thuja Occidentalis ◽

North Eastern ◽

The 1960S ◽

Thuja Orientalis ◽

Ornamental Trees ◽

Common Tree ◽

Local Habitat

Abstract Due to the lack of maintenance, abandoned cemeteries are often incorporated into the landscape. In many cases the information about the age of the cemetery is unavailable. To find out the approximate time of the formation of the cemetery the information recorded in the annual tree and shrub rings can be used. One of the most common tree species, planted for ornamental and symbolic purposes on the cemeteries, are Thuja orientalis and Thuja occidentalis. Alien to the Polish flora, these species adapted well to the local habitat and climatic conditions. The paper presents an attempt to apply dendrochronological dating to determine the age of the abandoned cemeteries in the region of the Great Masurian Lakes, part of the Masurian Lake District (north-eastern Poland). The study included five abandoned cemeteries. In total, 15 cores were taken from the trees. After applying the standard dendrochronological method, local chronologies for the studied species were established. The research indicated that the oldest found specimens - over 70 yrs old - are Thuja occidentalis individuals growing at the Słabowo cemetery. At the other sites the specimens of both Thuja species date back to the 1960s and early 1970s. Compared to the historical information regarding the age and origin of the studied objects, thujas growing there are much younger than the age of the cemeteries foundation. The presented method proved to be very helpful in understanding the time of Thuja occidentalis and Thuja orientalis introduction at the investigated cemeteries.

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Hoplotylus Femina N.G., N.Sp. (Pratylenchinae: Tylenchida) Associated With Ornamental Trees

Nematologica ◽

10.1163/187529259x00525 ◽

1959 ◽

Vol 4 (4) ◽

pp. 317-321 ◽

Cited By ~ 5

Author(s):

J.J. s' JACOB

Keyword(s):

Ornamental Trees

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DuPont further expands its portfolio of products that helps to purify, conserve and reuse water

Membrane Technology ◽

10.1016/s0958-2118(20)30213-5 ◽

2020 ◽

Vol 2020 (12) ◽

pp. 8-9

Author(s):

Simon Atkinson

Keyword(s):

Reuse Water

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Graphically Based Optimization of Single-Contaminant Regeneration Reuse Water Systems

Chemical Engineering Research and Design ◽

10.1205/cherd06252 ◽

2007 ◽

Vol 85 (8) ◽

pp. 1178-1187 ◽

Cited By ~ 46

Author(s):

J. Bai ◽

X. Feng ◽

C. Deng

Keyword(s):

Water Systems ◽

Reuse Water

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Impact of tephra deposition on growth in conifers: the year of the eruption

Canadian Journal of Forest Research ◽

10.1139/x84-130 ◽

1984 ◽

Vol 14 (5) ◽

pp. 731-739 ◽

Cited By ~ 18

Author(s):

Thomas M. Hinckley ◽

Hiromi Imoto ◽

Katharine Lee ◽

Susan Lacker ◽

Yasushi Morikawa ◽

...

Keyword(s):

Fine Root ◽

Height Growth ◽

Diameter Growth ◽

Growth Reduction ◽

Root Mortality ◽

Foliar Damage ◽

Associated Species ◽

The Impact ◽

Total Tree ◽

Mount St Helens

Seven sites ranging from 15 to 135 km from Mount St. Helens were selected to study the impact of air-fall tephra on the growth of Abiesamabilis (Dougl.) Forbes, A. procera Rehd., Pseudotsugamenziesii (Mirb.) Franco, Tsugaheterophylla (Raf.) Sarg., and T. mertensiana (Bong.) Carr. As tephra depth increased, there was a corresponding increase in visible foliar damage and associated decreases in diameter and height growth. Reduction in diameter growth was greater than reduction in height growth. The reduction in diameter growth approached 50% in both trees and saplings of A. amabilis. Growth reduction in true firs was greater than in associated species. This difference was related to their greater capacity for interception and retention of air-fall tephra. Damage to trees, and resulting growth reductions, were due to tephra coverage of both the foliage and the soil. Coverage of the foliage resulted in foliar damage, foliage abscission and reduction of total tree foliar area, and increased fine root mortality. Tephra coverage of the soil had the potential to restrict oxygen diffusion into the soil. However, soil oxygen concentrations less than 10% were measured only once over a 2-year period.

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