Original Articles

Influence of intraspecific competition on seed production of Datura stramonium L.

Published in: South African Journal of Plant and Soil
Volume 17, issue 2, 2000 , pages: 70–73
DOI: 10.1080/02571862.2000.10634871
Author(s): A., E.J. SAAYMAN, Republic of South Africa


Field experiments were conducted during two growing seasons to investigate the effect of different Common thorn-apple (Datura stramonium L.) densities on seed production of this specie. Maize (Zea mays L.) was planted in 2.1 m rows with a plant population of 16000 plants. ha−1. D. stramonium was planted at five densities in association with maize. The time of weed seed production, total seed production of each D. stramonium plant and of each plant population were determined. Seed production of D. stramonium decreased with increasing density stress, with a substantially greater effect during an unfavourable season. The study provided information on timing of weed control and the implications of weed seed contamination in the absence of weed control. This may contribute to more effective, economic and environmentally friendly weed control.

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