Jezza said...shi thouse said...
Greenie,
- the other new fashion in retic also is drip system that runs under the lawn - apparently uses less water, doesnt have runnoff or water blowing everywhere during a strong breeze, is more effective at getting to the roots, cant be seen
This is exactly that....a fashion. These systems are designed, and are great for soils which are high in clay content. Not so great (crap) for your typical west australian sand pit, and especially under lawns. People end up having to run these systems for a long time to get any benefit from them in WA and probably end up using more water. And god help you when you have blockages, and air-locks. I would avoid these systems at all costs. Oh they are a rip off for what they are too.
funny you should mention the clay soils. I have installed a few of these systems in kalgoorlie clay soils and no longer install them , I reckon they only work in sandy soils.
couple of suggestions for your lawn. dont put one down on sandy soils, or clayey soils. you really need a 50/50 blend.
this advice is completely useless as you have a lawn on the wrong soil already. so if your soil is sand , a light topdress with clay and gypsum. if your soil is clay add some course sand.
wetasoil( not the brand) is basically a variation on gypsum, so if you let your lawn dry out( by infrequent watering) it drys and becomes relatively useless, even sealing the top of the soil

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avoid things that compact your lawn like cars , motorised lawn mowers........
you can see where all the traffic goes in the middle of the photos. the dry area on the left is where our soil is really thin over hard calcrete and rock.
the grass is kikuyu with buffalo runners added in the shady areas. this lawn actually looks better in winter as it is well protected from frost
regular fertilizing gives your lawn the green colour, but little else.
On my own lawn i have large shady trees around the perimeter but with the understorey raised and the canopy lightly thinned, to allow light and air to flow through, thus cooling the garden in summer. I see many people in kal remove the trees as they feel that it is stopping the grass from growing, but you need to remember that the trees keep the natural water table down and so reduce the amount of salts that build up in the top few inches due to evaporation
the back lawn is 150m sq and has 50% shade at any time of day.
the dryest parts of the garden are next to where I have paved, having been encouraged by water saving experts..

Pehaps you could look at more grey water recycling . all our washing machine water goes through the laundry wall into a 200l drum the gravity feeds onto the lawn. we move it around to the various fruit trees as they are fruiting and to the dryer spots on the lawn.
the reason for the drum is that washing machine pumps arnt designed to pump far or with much head, so they burn out with a long hose attached.
mind you grey water puddling on you lawn is illegal( health department)
Our set up was once photograhed by a watercorp rep and we were told that it was a great idea, then 6 months later the photo appeared in a Waterwise presentation as being bad AND illegal. 3 people at the lecture rang me to have a laugh

Im rather impressd by all the good tips and ideas Ive read here. maybe we are starting to pay attention