Abstract
Recently, Grass seeding for erosion control of slopes need to be practise Lhroughout the year, so we must make clear effects of temperature for germination of grass seeds.1. Germination curves of weeping lovegrass (summer grass), Italian Ryegrass, Creeping Red Fescue (Spring grasses) and Red Clover on the constant temperature are Fig 1.Any seed can not germinate on 5°C for two weeks. Water absorption curve of Italian Ryegrass on the constant temperature is Fig 2.2. Germination rate is very slow on the constant temperature 10°C, but when seed is put on the suitable temperature for 1st day, germination rate is promoted even on 10°C (Fig 3, 4)3. Freezing damage (on-5°C) of seed is pomoted according to germinative development (Fig 5). Its damage appears earlier germinative period than dry damage.
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