Cover crops and interrow tillage for weed control in short season maize (Zea mays) |
| |
| Affiliation: | 1. Department of Plant Science, Macdonald Campus of McGill University, 21111 Lakeshore Road, Ste. Anne de Bellevue, Québec H9X 3V9, Canada;2. Agriculture and Agri-Food Canada, St. Jean Sur Richelieu Research Station, St. Jean Sur Richelieu, Québec, Canada;3. Agriculture and Agri-Food Canada, Saskatoon Research Center, 107 Science Place, Saskatoon, Saskatchewan S7N OX2, Canada;1. Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China;2. Center of Biomedical Big Data, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China;3. West China Medical School, Sichuan University, Chengdu, Sichuan, PR China;4. Research Core Facility, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China;1. University of Minnesota-Twin Cities, St. Paul, MN, United States;2. USDA-Agricultural Research Service, Plant Science Research Unit, St. Paul, MN, United States;3. USDA-Agricultural Research Service, Soil and Water Management Unit, St. Paul, MN, United States;1. College of Agriculture ‘Luiz de Queiroz’, ESALQ-USP, Av. Pádua Dias, 11, CEP: 13418-900, Piracicaba, SP, Brazil;2. Fundação MT, Av. Antônio Teixeira Santos, 1559, Bairro Parque Universitário, CEP: 78750-000, Rondonópolis, MT, Brazil;3. Federal Technological University of Paraná, Estrada p/ Boa Esperança, km 04, CEP: 85660-000, Dois Vizinhos, Brazil;1. Department of Science and Technology for Agriculture, Forestry, Nature and Energy, Via S. Camillo de Lellis, Viterbo 01100, Italy;2. Department for Innovation in Biological, Agro-food and Forest Systems, Via S. Camillo de Lellis, Viterbo 01100, Italy;1. INRA, UMR AGIR 1248, 24 Chemin de Borde Rouge—Auzeville, CS 52627, 31326 Castanet Tolosan Cedex, France;2. Institut de Recherche pour le Développement, UMR DIADE, 911 Avenue Agropolis, 34394 Montpellier Cedex 5, France;1. School of Agriculture and Food Sciences, The University of Queensland, Gatton 4343, QLD, Australia;2. Centre for Dryland Agriculture, Bayero University Kano, Kano 70001, Nigeria;3. Stirling to Coast Farmers Inc, Mount Melville 6330, WA, Australia;4. PT East West Seed Purwakarta Regency, West Java, Indonesia;5. Department of Fisheries, Ministry of Primary Resources and Tourism, Serasa BT1728, Brunei |
| |
| Abstract: | Weed competition can cause substantial maize (Zea mays L.) yield reductions. Interseeding maize with cover crops or a combination of interrow cultivation and interseeded cover crops are possible alternative methods of weed control. This study was conducted to examine the potential of interrow cultivation plus cover crops to reduce weed density in maize without reducing the grain yield. Field experiments were conducted in 1993 and 1994 at two sites in Québec to determine the effects of planting 12 cover crops with maize on weed control. Fall rye (Secale cereal L.), hairy vetch (Vicia villosa Roth), a mixture of red clover (Trifolium pratense L.) and ryegrass (Lolium multiflorum Lam), a mixture of white clover (Trifolium repens L.) and ryegrass, subterranean clover (Trifolium subterraneum L.), yellow sweet clover (Meliotus officinalis Lam), black medic (Medicago lupulina L.), Persian clover (Trifolium resupinatum L.), strawberry clover (Trifolium fragiferum L.), crimson clover (Trifolium incarnatum L.), alfalfa (Medicago sativa L.), and berseem clover (Trifolium alexandrinum L.) were seeded at two planting dates, 10 and 20 days after maize emergence. Interrow cultivation was carried out weekly until forage seeding, with a final cultivation being conducted just prior to cover crop seeding. Cover crop planting date did not affect maize yields or the ability of interrow tillage plus cover crops to suppress the development of weed populations. Maize yield was less affected by the interseeded cover crops under conditions of adequate rainfall. Corn planted in fields heavily infested with weeds resulted in substantial yield reductions even when rainfall was adequate. Except for 1993 at l'Assomption interrow tillage plus cover crop treatments had consistently lower weed biomass when compared to the weedy control. Most of the weed control was due to the interrow cultivation performed prior to seeding of the cover crops. The lowest weed density occurred in the herbicide treated plots. The ability of interrow tillage plus cover crops to suppress the development of weeds was affected by the level of weed infestation, the growing conditions and location. The cover crops provide additional weed control but the interrrow tillage or some herbicide application may still be necessary. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
