Horowitz, M. (1973) Competitive effects of three perennial weeds, Cynodon dactylon (L.) Pers., Cyperus rotundus L. and Sorghum halepense (L.) Pers., on young citrus. Journal of Horticultural Science, 48 (2). pp. 135-147.
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Abstract
One-year-old sour orange seedlings (Citrus aurantium) were grown with C. dactylon, C. rotundus and S. halepense in containers which were either separated or linked. In the separated containers no effect due to aerial competition was apparent on citrus after 10 months. In the linked containers which allowed direct contact between the root systems citrus growing with weeds showed severe reductions in plant height, stem diam. and leaf number after 3-4 months. The addition of nitrogen slightly reduced the competitive effects of the weeds. When weed tops were removed, the citrus plants recovered from the most severe damage within 6 months. It is suggested that competitive effects are caused in part by phytotoxic substances produced by the weeds. The competitive effect of S. halepense and C. rotundus were more severe than those of C. dactylon which emphasizes the importance of a balanced weed control programme which would prevent the development of more detrimental weed successions. 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 10:53 |
| Last Modified: | 21 Jun 2012 10:54 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/6163 |
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