Effects of 1,3-dichloropropene plus chloropicrin on weed seed germination |
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| Institution: | 1. Department of Plant Protection, Shandong Agricultural University, 61 Daizong Street, Tai''an, Shandong 271018, People''s Republic of China;2. Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong 250100, People''s Republic of China;3. Plant Protection and Inspection Station of Feicheng, Feicheng, Shandong 271600, People''s Republic of China;1. Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China;2. Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China;1. College of Agriculture, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China;2. Lethbridge Research Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada;3. Cereal Research Centre, Agriculture and Agri-Food Canada, Winnipeg, MB R3T 2M9, Canada;1. Molecular Plant Pathology Laboratory, USDA-Agricultural Research Service, Beltsville, MD 20705, USA;2. Department of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, USA;3. Universidad Privada Atenor Orrego, Av América Sur 3145, Trujillo 1075, Peru;4. Department of Plant Pathology and Agricultural Engineering, Universidad Nacional de Piura, Piura, Peru;1. International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772-00100, Nairobi, Kenya;2. School of Agriculture and Enterprise Development, Kenyatta University, P.O. Box 43844-00100, Nairobi, Kenya;3. International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), BP 320, Bamako, Mali;4. School of Biological Sciences, University of Nairobi, P.O. Box 30197, Nairobi, Kenya;5. International Maize and Wheat Improvement Centre (CIMMYT), P.O. Box 1041-00621, Nairobi, Kenya;6. UMR Laboratoire Evolution, Génomes, Comportement et Ecologie, groupe IRD, Diversité, Ecologie et Evolution des Insectes Tropicaux, UPR 9034, 22 CNRS, 91198 Gif-sur-Yvette, France |
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| Abstract: | Telone C-35, a commercial formulation of 1,3-dichloropropene (1,3-D) and chloropicrin (CP), is one of the potential replacements to methyl bromide (MB) for soil fumigation. A laboratory dose–response study and two field trials in tomato were conducted to evaluate their weed control efficacy and their effect on tomato yield. Laboratory studies found that the seeds of Digitaria chinensis were the most sensitive to soil fumigation with Telone C-35, followed by Eleusina indica, Portulaca oleracea and Stellaria media with the LC50 values between 3.35 and 11.68 mg kg−1 soil. Field trials revealed that Telone C-35 applied to the field at 327, 243 and 164 L ha−1 could suppress the percentage of germination weed seeds while maintaining high tomato marketable yields, with no significant differences between MB + CP and the higher two Telone C-35 rates. The yield data from both seasons indicated that all Telone C-35 treatments had a positive effect on tomato yield; there was a 32%–62% increase the mean marketable tomato yield. Our results indicated that Telone C-35 was an excellent MB alternative and could provide acceptable weed control efficacy. Based on our results, Telone C-35, in combination with other alternatives to MB, is recommended to achieve integrated pest management. |
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