Apera spica-venti
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Scan day: 05 March 2014 UTC
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Description: Photograph, description, distribution, ecology and economic significance.
AgroAtlas - Weeds - Apera spica-venti (L). Beauv. Silky Bentgrass, Wind-Grass (L). Beauv. Silky Bentgrass, Wind-Grass Family Poaceae Barnhart (Graminea), genus Apera Adans. Stalk reaches 20 to 100 cm in height. Root system fibrillose. Leaves linear, to 5 mm in width, rough on both sides; ligule reaches 6 mm in length, blunt, disrupted. Inflorescence is a panicle reaching 30 cm in length, having plenty of fine two-three-colored twigs. Twigs one-floral, green or lilac-tinged. Caryopsides ripen quickly, fall before harvesting of winter cereals, and litter arable layer of soil. Every plant produces up to 16,000 caryopsides. Fallen grains quickly germinate, especially in damp warm weather; germinate rapidly after autumn rains; and do not germinate at all in summer. They germinate better from the ground surface and do not germinate from depths more than 2 cm. Germination of seeds begins at temperature 5œC; optimum temperature of germination is 10 to 12œC. Seeds maintain germinating capacity for 6-7 years. Reproduction and propagation occur by seeds.
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| Page title: | AgroAtlas - Weeds - Apera spica-venti (L). Beauv. Silky Bentgrass, Wind-Grass |
| Keywords: | interactive atlas map economic plant distribution area vegetation diseases pest weed USSR agriculture Russia geography GIS NIS biology photo nature geographic information system handbook ecological maps research investigation pictures download description |
| Description: | description |
| IP-address: | 195.70.197.2 |
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| Date | created: 2005.05.04 Last updated on 2014.03.05 14:41:33 MSK |