Effects of some eucalypts on yields of Vigna unguiculata L. Walp., Zea mays L. and Sorghum bicolor L. |
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| Institution: | 1. Department of Plant Protection, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Ahvaz, Iran;2. Department of Agronomy and Plant Breeding, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Ahvaz, Iran;3. Department of Animal Science, Faculty of Animal Science and Food Technology, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Ahvaz, Iran;1. Ministry of Education Key Laboratory of Silviculture and Conservation, Beijing Forestry University, Beijing, China;2. Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, P.R. China;3. Irrigation and Crop Ecophysiology group, IRNAS-CSIC, Avenida Reina Mercedes, 10, 41080-Sevilla, Spain;4. Forest, Rangeland and Fire Sciences, 875 Perimeter Dr., MS 1133, University of Idaho, Moscow, ID 83844-1133, United States of America;5. New Zealand Institute for Plant & Food Research Ltd, Private Bag, Christchurch, New Zealand;6. Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot, China;7. New Zealand Institute for Plant & Food Research Ltd, Fitzherbert Science Centre, Palmerston North, New Zealand |
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| Abstract: | Vigna unguiculata (beans), Zea mays (maize) and Sorghum bicolor (sorghum) were grown with and without fertiliser in a savanna grassland (control) and under the effects of decomposing parts of eucalyptus in an old eucalyptus plantation with a well-lit floor (treatment).Morphological characters of the beans, compared between the two sites, showed that leaf dry-matter production, expressed as specific leaf area (SLA), did not differ between plants in the two sites (fertilised and unfertilised). Although the organic-matter content and water-holding capacity of the plantation soil were significantly higher than those of the control plants. beans, grain yield ha−1, shoot height, number of leaves and fruits were higher in the control plants. However, when beans were fertilised, shoot height did not differ between sites, but the other measured morphological characters and grain yield were significantly improved in both sites, although these characters still remained higher in the control. In maize and sorghum, grain yield ha−1 did not vary significantly in the two sites (fertilised or unfertilised). These findings suggest that beans can be incompatible with eucalypts, while maize and sorghum may be compatible with eucalypts for agrosilvicultural practices, and that fertilisation can offset, to an extent, the depressive effects of eucalypts on crops. |
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