Shoot / Root Competition of Fat-hen (Chenopodium album) and Groundsel (Senecio vulgaris) with Tomato and Cabbage.
2003
Qasem, J.R., Hill, T.A. (Univ. of Jordan., Amman (Jordan). | Univ. of London., London(UK))
Shoot and/or Root competition of C. album, S. vulgaris, tomato (Lycopersicon esculentum Mill cv. Ailsa Craig) and Cabbage (Brassica oleracea var. Capitata cv. Offenham) were investigated under glasshouse condition using the competition box technique. Results showed that weed species competed strongly with tomato, and c.album with tomato and cabbage and greatly reduced shoot dry weights of both crops compared with the control (no competition). Both weeds competed effectively through roots and more than their shoot competition. C. album appeared stronger competitor than S. vulgaris and under all competition treatments. It showed higher competition index (CI) and relative competitive ability indices (RCAI) than S.vulgaris and more than that of tomato. It showed greater root competition than shoot competition with both crops, but with lower values in competition with cabbage. Both crops suffered more in root and full competition treatments with weeds than with shoot competition. However, cabbage had higher relative competitive ability indices than tomato and C.album at all competition treatments and could be considered as a stronger competitor than tomato in fields heavily infested with C. album.
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