A combination of rice cultivar mixed-cropping and duck co-culture suppressed weeds and pests in paddy fields |
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| Institution: | 1. Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China;2. Guangdong Engineering Research Centre for Modern Eco-Agriculture and Circular Agriculture, Guangzhou 510642, PR China;3. Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, Guangzhou 510642, PR China;4. Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, Guangzhou 510642, PR China;1. Agroécologie, AgroSup Dijon, INRA, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France;2. UMR Agronomie, INRA, AgroParisTech, Université Paris-Saclay, 78850, Thiverval-Grignon, France;3. INRA, UE 115 Domaine Expérimentale d''Epoisses, F-21110, Bretenière, France;4. Anses, Laboratoire de la Santé des Végétaux, Unité Entomologie et Plantes invasives, CBGP – Campus International de Baillarguet, CS 30016, F-34988, Montferrier-sur-Lez Cedex, France;1. Department of Agronomy, Naini Agricultural Institute, Allahabad 211 007, India;2. Agricultural Technology Application Research Institute, Zone II, Kolkata 700 097, India;3. International Rice Research Institute (IRRI), Los Baños, Laguna, Philippines;4. ICAR- Indian Institute of Pulses Research, Kanpur 208 024, Uttar Pradesh, India;5. International Maize and Wheat Improvement Center (CIMMYT), India;1. Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland;2. Institute of Crop Science, University of Hohenheim, 70599 Stuttgart, Germany |
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| Abstract: | Industrial agriculture with intensive use of herbicides and pesticides has resulted in a great reduction of biodiversity and negative environmental impacts on rice paddy fields. Biodiversity-based farming systems can improve production efficiency and sustainability, with fewer negative environmental impacts and lower use of external inputs. Previous studies have reported that both the rice-duck co-culture systems and mixed-cropping systems with different rice cultivars can suppress weed communities and control harmful pests. However, little is known about the effects of an integration of mixed-cropping with different rice cultivars and rice-duck co-culture on weed communities and pests in paddy fields. Four combinations with three replications of each treatment were employed, half with and half without ducks in paddy fields, which were compared with mono-cropping systems of the five rice cultivars. After two-season experiments, we found that species richness and diversity of weed communities in the mixed-cropping with rice-duck co-culture (MCDC) systems were significantly lower than those in the mono-cropping systems. The abundance of rice leaf roller in the MCDC systems was also significantly lower than that in the mono-cropping systems. Our findings indicated that the biodiversity-based farming would be an environmentally friendly approach to control weeds and rice leaf roller without using herbicides or pesticides in paddy fields, and hence to produce more safe, healthy, and high-quality rice and duck meat. |
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| Keywords: | Mixed-cropping Rice-duck co-culture Biodiversity Weeds Rice leaf roller |
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