Elymus elongatum (also known as Agropyron elongatum, tall wheat grass and Eurasian quackgrass)
Everyone has been talking about this energy-producing grass for a few years. It is a very robust, frost-hardy and drought-tolerant species. If it gets enough water, it can grow up to 1.5 metres or more. It can also grow on soil
with a high salt content and is suitable for marginal locations where the pH ranges from 6.6 to 10.0. HULK grows in tufts and does not put out underground runners. Its robustness means that it can grow for several years, but it should not be cultivated for more than 5 years as otherwise arable land could be reclassified as grassland. It can certainly be grown for longer on grassland. It is quite slow-growing in the early stages, which means that weed control will be necessary growing at a similar rate to cocksfoot at this stage.
When sown in July or August, it establishes quickly if it receives enough water. It should not be sown any later than this as young plants are sensitive to early frosts. A clean furrow and a fine tilth will help the young seed emerge.
It can be sown over a prolonged period, from early April until mid-August.
No crop can be expected in the year of sowing, so sowing after an early WPS harvest is advisable. At this time the field will be very clean and free from volunteer cereals. HULK giant energy-producing grass is sown at a rate of one 18-kg pack per hectare. It is essential that the seeds are rolled after sowing. Sow at a depth of up to 1.5 cm. Strimming the grass in the year of sowing encourages it to thicken and so improves yields in subsequent years. The first main crop can be cut in the year after sowing, when the ears have fully developed and the dry matter content is approximately 28 to 38 per cent, from mid to late June until September. Do not cut any shorter than 15 cm when harvesting, as otherwise regrowth will be impaired and the sward will become less dense. This can result in higher weed infestation.
HULK energy-producing grass needs a lot of potassium, so potash should be applied every year.