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2002   First Long Stem Tube Stock Trial Report.   Site 8

Structured Trial
Using Long-stem tube stock - 28th July 2002

The focus of the trial was to find out if rainforest species would survive and thrive if they were planted deeper in the soil in a similar way to the plants Longstem.gif (1410 bytes)used in riparian trials as developed by Bill Hicks. The plants for this trial were our own seedlings that had been grown to long stem size approximately 1 metre. A water jet to dig the holes was not suitable for us due to lack of water to the site. Planting was carried out on 28th July 2002 using a petrol driven auger to dig the holes. 5 litres of water was used in each hole and allowed to soak in. Plants were pre-watered while still in their pots and placed in the hole leaving not less than 90mm of stem and foliage above the ground.

Care must be taken when back-filling the hole that no air pockets are left as the plant will dry out. Another 5 litres of water was used to settle-in the plant. Wire baskets were used to protect plants from wallaby attacks.  Plants were numbered and measured. Records were kept each month of progress. Three months after planting, a selection from each species was root inspected for signs of extra roots developing above the original root ball.

67 tube stock were planted and at the end of the trial only 5 plants had died.

46 plants were root inspected in October 2002 for root development and 25 of those had developed roots above the original root ball.

A copy of the Trial Report is Tentacle.jpg (26575 bytes)available on page 6 Lantanapoison.jpg (27469 bytes).

 

Weed infestation

                              Lantana poisoned

 

 

Auger.jpg (31017 bytes)Auger2.jpg (41882 bytes)

Drilling the holes with a
   petrol driven auger.

Come on fellows don't just stand there looking at the camera.  Get on with it!

 Willingworkers.jpg (34521 bytes)

 

Preparing to plant the tube stocks.Japanesestudent.jpg (30086 bytes)

 

 

Everyone helped. We even had a Japanese exchange student.  It must have been a bit of a culture shock but she was willing and helpful.

 

 Tubestock.jpg (22048 bytes)

 

Longtube stock ready for planting.Protectionwallabies.jpg (30136 bytes)

 

 

                  Plants required basketing for protection from hungry wallabies

Gmelina.jpg (40671 bytes)

Large leaf plants have suffered from sunburn but are still healthy.

Sloenia.jpg (36044 bytes)

 

 

Two months old Sloanea showing healthy new growth.

 

The nearby weeds below are very stressed.
Stressedweeds.jpg (51868 bytes)      

Tasmania.jpg (27657 bytes)

 

The Tasmannia insipida is coping well.

 

 

 

Trema aspera Rootdevelopment.jpg (38587 bytes)showing healthy roots above the original rootball.

                    Glochidion.jpg (32597 bytes)

Root inspection. Note roots over the yellow pen.

 

 

Plantswatered.jpg (33326 bytes)

Plants were watered once after root inspection.

Stillalive.jpg (34744 bytes)

The drought conditions were very severe but these plants recovered well after rains.

Stresseddry.jpg (27910 bytes)

 

 

Sixty seven tubestock were planted in Area 8 and by July 2003 fifty seven were still alive and growing strongly.

 

 

Site 8  July 2003 Report.

Only 10 plants have died in the 12 months since planting. The most successful species being Glochidion ferdinandi and Trema aspera.

These species that are usually grown in the shady rainforest have survived the extremely dry conditions well, Neolitsia dealbata , Sloanea australis, Gmelina leichhardtii

 

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