Echinochloa crusgalli
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Scan day: 05 March 2014 UTC
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Description: Photograph, description, distribution, ecology and economic significance.
AgroAtlas - Weeds - Echinochloa crusgalli (L). Beauv. - Barnyardgrass. Family Poaceae (Gramineae), genus Echinochloa. Root is coronal, well developed, penetrating into soil down to 50 cm. Stem is up to 10-100 cm, ascending or erect, strongly fruticose at base. Leaves widely linear, acute - rough on edges, with firm medial vein. Inflorescence is contracted panicle. Spikelets are sessile, in groups, easily fall down at a maturing. Grain is chaffy caryopsis. The fruitfulness is 200-1000 (400 on the average) seeds on one plant, the weight of 1000 seeds is 1.5-2.5 g. In autumn caryopsides do not germinate even at stratification. The dormant period lasts about 15 months. In spring the seeds germinate at temperature 18-20œ C from depth down to 12 cm, appearing as mass plantlets, the seeds can germinate till autumn. They do not germinate at temperature lower than 10œ C. The plantlets are very responsive to low temperatures, often perishing at late spring frost. Seed vitality is 7 to 10 years. Flowering since May or June. Bearing since June or July till late autumn. Seed spreading by manure, excrements of birds, and by wind.
Size: 1133 chars
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| Page title: | AgroAtlas - Weeds - Echinochloa crusgalli (L). Beauv. - Barnyardgrass. |
| 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 14:31:37 MSK |