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The deep fibrous root systems of switchgrass left a deep rich layer of organic matter in the soils of the Midwest, making those mollisol soils some of the most productive in the world. By returning switchgrass and other perennial prairie grasses as an agricultural crop, many marginal soils may benefit from increased levels of organic material ...
This grass produces hollow, erect stems up to 1.3 metres (4.3 feet) tall. The grass grows from a dense network of roots and rhizomes thickly intertwined to form a sod.The leaves are up to 25 centimetres (9.8 inches) long and .5 cm (0.20 in) wide and are flat or slightly rolled at the edges.
The main roots are 6–10 ft (1.8–3.0 m) deep, and the plants send out strong, tough rhizomes, so it forms very strong sod. [4] Depending on soil and moisture conditions, it grows to a height of 1–3 m (3.3–9.8 ft). The stem base turns blue or purple as it matures. Big bluestem blooms in the summer and seeds into the fall.
Equisetum arvense is toxic to stock, particularly horses. [22] It was introduced into New Zealand in the 1920s and was first identified as an invasive species there by Ella Orr Campbell in 1949. [23] It is listed on the National Pest Plant Accord, prohibiting its sale, spread and cultivation. [24]
It has relatively deep roots and propagates relatively rapidly horizontally from its root system but grows to only 2–5 inches (5–13 cm) in above-ground height, basically eliminating the need for mowing lawns that use it. It cannot be reproduced by seed and thus depends on sod plugs or sprigging for its production. [13]
Taeniopoda eques, the western horse lubber grasshopper, is a relatively large grasshopper species of the family Romaleidae found in arid and semi-arid parts of southwestern United States to central and southwestern Mexico.
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The grass grows from a thick root network. Plants have been noted to have roots penetrating over 4 metres (13 ft) deep in the soil and 3 metres (9.8 ft) laterally. The roots can grow 5 centimetres (2.0 in) per day. The first root to grow into the soil from a seedling can send out up to 60 small rootlets per inch. The dense root system forms a sod.