Randle Siddeley associates
landscape architecture environment urban design
PHASE 1 - LATAKIA GARDEN SITE
CHEMICAL SPRAYING – PINE TREES
Sheet No. 1
IDENTIFICATION OF
PROBLEM
Issued by: AM
Date: 05/05/2011
An infected needle of all ages start dying from the tips backward until the entire needle turns
brown and drops - The result is mostly bare branches. In severe cases branches are killed, but
usually buds of infected branches remain healthy and produce new foliage the following
spring. The new foliage becomes infected, continuing the disease cycle.
Randle Siddeley associates
landscape architecture environment urban design
As above
The result is mostly bare branches. In severe cases branches are killed
All of the above pictures clearly shows that the treatment on all the Pine trees (Site wide)
aren’t properly maintained - currently new growth is observed and the infection would
continue the cycle on the new growth – please prepare a treatment program and schedule on
an URGENT basis – thereafter forward same for approval.
Randle Siddeley associates
landscape architecture environment urban design
Also see my email send on same: Fri, March 11, 2011 7:27:54 PM
Dear Zayd / Rebal,
as per our site walk, I indicated the Fungal infections on the Pine trees - please see attached
pictures(168/9) of the Pine tree on site - also see the *attached info - please see which Fungal
products is available on site and what we would need to buy, to start immediate Fungal
treatment on all the Pine trees (Site wide). Please inform me asap with requested info thereafter we'll formulate a treatment program and schedule (taking the weather conditions
in consideration)
Regards,
Andre
* Symptoms
Figure 2 - Infected needles of longleaf pine.
Figure 3 - Infected needles of Scots pine.
The fungus causes two kinds of needle spots on all pine species that it attacks. These appear
on needles at any time of the year, but most commonly from May through October on
longleaf (fig. 2), and during August on Scots pine (fig. 3).
The most common spot is straw yellow at first, later changing to a light brown, often with
chestnut-brown borders. Dark-purplish borders are common after the advent of cool weather
in the autumn. Individual spots are usually one-eighth inch (3.2 mm) in diameter. When the
needle dies, the green tissue between the spots shrinks more than the diseased areas and the
resulting embossed appearance is the most distinctive symptom. Needles with multiple
infections take on a mottled appearance.
The second spot, called bar spot, is less common. It is a combination of a brownish spot on an
amber-yellow band about one-eighth inch (3.2 mm) wide. The tissue between the bands
often remains green. Bar spots are infiltrated with resin that prevents normal growth and
fruiting of the fungus. Both spot types have distinctly defined margins, a feature which readily
distinguishes them from those caused by other needle diseases.
The infected needle of long-leaf pine usually has three distinct zones: the basal portion which
is green, the middle portion which is mottled, and the apical portion which consists of dead
needle tissue. With the gradual death of needles, the affected parts curve outward and down
and finally assume an orange-red colour similar to those killed by fire. The characteristic spots
remain visible even after the needle dies.
With repeated infections, long-leaf seedlings are characterized by a long needleless stem with
a tuft of severely infected needles at the base of the terminal end. The unusual growth habit
of longleaf pine makes it especially susceptible to brown spot. The normal 3- to 5-year grass
stage presents an excellent target for fungal infection. Active height growth is inhibited for
many years and the young trees may die.
The majority of infected Scots pine needles are found on the lower branches of the tree,
especially on the north side. An infected needle of all ages start dying from the tips backward
until the entire needle turns brown and drops during October and November. The result is
mostly bare branches. In severe cases branches are killed, but usually buds of infected
branches remain healthy and produce new foliage the following spring. The new foliage
Randle Siddeley associates
landscape architecture environment urban design
becomes infected, continuing the disease cycle.
DESCRIPTION OF PROBLEM : FUNGUS INFECTION - PINE TREES – please see above info
CHEMICAL APPLICATION (chemical to be applied)
Fungicide – Contact & Systemic – alternative with 7 day interval - Please provide available product names and info on same
As requested, please inform of all aspects on URGENT basis
METHODOLOGY OF APPLICATION
1: Apply Fungicide – alternative treatment (Contact / Systemic products) with a 7 day interval
DO not apply during rainy conditions – if rain after spray (Min. 8h dry period), re-spray all trees
2. Add liquid soap (as currently used on all mixes)
3. Soil amendments - Peat moss 5Kg p/tree / Chippings / Potassium sulphate x1 p/month 250g/tree
FOLLOW UP TREATMENT AS REQUIRED
Weekly – until recovered – thereafter preventative treatment program
PHOTO OF SUCCESSFUL
TREATMENT
Randle Siddeley associates
landscape architecture environment urban design
Date problem resolved
/
/ 2011
- CONTINIOUS till fully recovered or under control
Additional Notes
Please take weekly week pictures of min. 12 selected trees (Site wide – indicate on a drawing and issue as a copy to all)
Select a part of the tree that show infection – take weekly pictures of same part and build a data base to monitor the
treatment and results.
Please keep sufficient stock of all products to be used for requested treatment program
This to be monitored by Rebal and Zyad in their respective Divisions
Reviewed and Verified by
Date:
Validated by
Date: