T/YNGA 006-2023 Seed production technical specifications for Deymetwei Grass (Carex tenuifolia)

Scope

Scope: This standard specifies the requirements for the source of basic seeds, characteristics, seed field setup, land preparation, cultivation techniques, field management, field monitoring and recording, seed harvesting, seed testing, labeling, and storage in the production of Demeter reed grass seeds in Yunnan Province. This standard applies to the seed production of Demeter reed grass in Yunnan Province. Main technical content: 1. Scope 2. Normative references 3. Terms and definitions 3.1 Breeding and variety registration - Demeter reed grass was registered in Australia in 1965. - In 1983, it was introduced from Australia by the Yunnan Institute of Grassland and Animal Science (formerly the Yunnan Beef Cattle and Pasture Research Center) and registered by the National Grazing Variety Approval Committee in 2010, with a variety registration number of 404. - Leaf quantity is high, the leaves are flat but relatively rough, and the leaves are olive green. - The conical inflorescence has large flower spikes, which are upright or drooping at the top, with 4-5 flowers per spike. - The size and shape of the seeds are similar to those of perennial rye grass seeds, with a thousand-grain weight of 2.5g. - It is a grazing grass suitable for both grazing and mowing, resistant to trampling, and compatible with white clover, with strong persistence. - It has strong regenerative ability, allowing 4-5 mowing cycles per year. - It has good drought resistance and earlier greening than perennial rye grass and duckgrass. - It has strong resistance to rust and lodging. - The annual dry matter yield reaches 5-6t/hm2, and the seed yield can reach 500-600kg/hm2. - The grass quality is good, with excellent palatability, and the nutritional period production period contains 21.11% crude protein, 4.7% crude fat, 16.9% crude fiber, and 41.61% non-nitrogenous extract, and 9.68% crude ash. - It adapts to the northern subtropical and temperate regions with an average annual temperature of 5-2

Development Information

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