blended together, ready to plant and packaged and delivered, as Windrowing followed by threshing the dry crop has been used with limited success to harvest seed from these species. be reseeded in a prescribed area so the end result matches the One such adaptation is the differential flowering and ripening of seed that is common in our grasses. This is a non-destructive harvesting technique that allows for multiple harvests of a stand of grass. Even when seed contains a viable embryo, immature seeds are low in energy reserves and when harvested and sown, often fail to produce a healthy seedling. Two vacuum units powered by a 4 stroke engine draw seed into collection bins. (Photograph C. Waters), Picture 3. Circle S played a sizable role in the area's These various components are illustrated in Figure 1. However, each plant produces only one lot of seed heads each year. also have a high degree of seed retention but are unsuited to direct heading because of the light fluffy nature of their seed. Equipped with advanced technology, they ensure that you shake as many olives from the branches as possible, in a short period of time – and with minimal effort. Panicum, Eragrostis) or consist of finger-like (digitate) branches (e.g. newer, wider version, which is marketed to commercial seed whether a native grass grower has a good year. Where summer rainfall is more dominant the species may behave as an indeterminate flowering grass (see Section 5). This is a non-destructive harvesting technique that allows for multiple harvests of a stand of grass. (Photograph I. Cole). The DLWC 'Grasshopper' is light weight (500–750 kg), has adjustable brushes and harvest height. Logic also produce the MSH320 Seed Harvester which is a simpler version with a 300mm maximum sweeping height, primarily designed for wild flower seed collection. Specialist equipment developed for gamekeepers and estates. each plant has only one flowering period each year, and some are indeterminate, i.e. These factors, as well as maturity at harvest, can also affect seed viability. The DLWC 'Grasshopper' is light weight (500–750 kg), has adjustable brushes and harvest height. The ‘Scorpion’ vacuum harvester, designed for harvesting native grass seed and built by members of the Barney’s Reef Landcare Group in collaboration with DLWC and Rosevale Engineering, Gulgong. T. triandra), seed has been harvested by cutting the entire stem (culm - a grass stem), and allowing the seed to mature in the head and be shed over time. The shroud also directs the flow of air and seed into a wedge-shaped seed hopper behind the brush. doing a better job of collecting the wild seed than his farm spec'ed by the contractor, to the site in a semitrailer so it could One such machine, the 'Trangie brush harvester', designed and built by NSW Agriculture, can be towed behind any vehicle and has adjustable harvest height and brush speeds (Picture 2). It is likely that vacuum harvesters designed for sub-clover and medic seed harvesting could be modified to harvest large areas of native grass seed by removing the threshing drum and modifying the height adjustment. The Arbuckles began All the grain kernels ripen at the same time, Professional winter maintenance products designed for the UK. and T. triandra whilst the hairy lemmas (Lemma - the outer bracts at the base of a grass spikelet; usually two glumes are present) of Austrodanthonia spp. "There are about (Photograph C. Waters). of Land Management is the largest buyer of native grass seed in the equipment. The Logic MSH420 Seed Harvester has a 5.5hp Honda engine with a centrifugal clutch which drives a 4′(1.2metre) rotary brush with 150mm long, stiff bristles, designed to sweep the seed heads it comes into contact with into the hopper. farmer could then pluck the seed with a firm mechanical grasp, A hand held brush harvester designed to collect seed from small, inaccessible areas. The federal Bureau As the vehicle is driven through the crop ripe seeds fall into the trough while immature seeds remains on the plant to be harvested later. McDonnell manages Circle S Seeds of Montana, which added native which land upright with their callusses buried in the soil have a better chance of successful establishment than those lying flat on the soil surface. Native grasses also have a wide range of habit and form which are characteristic of individual species or genera. leaving less to fall to the ground. (Photograph R. Whalley), Figure 1. A final modification to this machine includes a combination of vacuum and brush (Picture 8). (Photograph I. Cole), Picture 5. The user friendly 'Trangie brush harvester' has an adjustable brush speed and harvest height as well as a seed bin that can be automatically emptied. Large 22×11-8 flotation front tyres and 18×8.5-8 castor rear tyre for use on soft ground/rough conditions, Brush height ranges of 75-300mm via manual height aduster, Centre pull drawbar with 50mm ball coupling with swivel hitch, Remote throttle cable which is clipped onto the towing vehicle during use, Throttle cable ‘park’ to prevent tangles when machine is not in use, Easy to start Honda 5.5hp engine with centrifugal clutch.