Spatial growth of Sorghum halepense (L.) Pers.

Horowitz, M. (1973) Spatial growth of Sorghum halepense (L.) Pers. Weed Research, 13 (2). pp. 200-208.

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Small plants of S. halepense were planted in the field in June 1966 and grown for more than 2 years without competition from other weeds or crops. The plants spread by means of subterranean rhizomes from which aerial shoots developed and by tillering around these aerial shoots to form clumps. The expansion proceeded without preferential direction and established patches developed a roughly circular shape. Aerial growth stopped completely in winter but plants remained alive. During the hot summer months the mean area increment amounted to 1.3 m2/month and after 21/2 years of growth patches had extended up to 3.4 m from the initial sprig and had a mean area of 17 m2. By the second summer, shoot density reached 190/m2 and mean seed production was 84 g, or 28 000 seeds/plant. About 80% of rhizome dry wt. was present in the upper 20 cm of soil and rhizomes did not penetrate deeper than 40 cm. About 80% of rhizome dry wt. was present within 1-m radius from the plant centre and almost all the remainder was found between 1- and 2-m radius. See also WA 22, 649. From summary

Item Type: Article
Author Affiliation: Division of Weed Research, Newe Ya'ar Experiment Station, P.O. Haifa, Israel
Subjects: Crop Improvement
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 21 Jun 2012 10:58
Last Modified: 21 Jun 2012 10:59

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