Effect of density,cultivar and irrigation on spring sown monocrops and intercrops of wheat (Triticum aestivum L.) and faba beans (Vicia faba L.) |
| |
| Institution: | 1. University of Hawaii at Manoa, Department of Natural Resource and Environment Management, Honolulu, HI, USA 96822;2. University of Hawaii at Manoa, Department of Tropical Plant and Soil Science, Honolulu, HI, USA 96822;3. Local Initiatives for Biodiversity, Research and Development (LI-BIRD), P.O.Box. 634, Pokhara, Kaski, Nepal;1. The Rural Economy and Agricultural Society, HS Konsult AB, Box 271, SE-701 45 Örebro, Sweden;2. Department of Animal Environment and Health, Swedish University of Agricultural Sciences, Box 234, SE-521 32 Skara, Sweden;1. Thünen Institute of Organic Farming, Federal Research Institute for Rural Areas, Forestry and Fisheries, Trenthorst 32, 23847 Westerau, Germany;2. University of Kassel-Witzenhausen, Organic Farming and Cropping Systems, Nordbahnhofstr. 1a, 37213 Witzenhausen, Germany;1. College of Economics and Management, Huazhong Agricultural University, Wuhan, 430070, China;2. Department of Family, Youth, and Community Sciences, University of Florida, Gainesville, FL, 32607, USA;3. Center for Sustainable and Organic Food Systems, University of Florida, Gainesville, FL, 32607, USA |
| |
| Abstract: | Spring-sown intercrops of wheat (Triticum aestivum L.) and faba beans (Vicia faba L.) were grown in three experiments at the University of Reading, UK. One wheat cultivar, Axona, and one (experiment 1) or two bean cultivars (experiments 2 and 3) Scirocco and Maris Bead, were grown as sole crops and intercrops at 50%, 75% and 100% recommended density. Experiments were rainfed but irrigation was an additional treatment in experiment 3. Biomass and seed yields of both wheat and faba beans were greater when monocropped than when intercropped. There was no evidence that radiation use efficiency (RUE) of intercrops was significantly different from sole crops. In all intercrops there was no significant effect of density on biomass, RUE or seed yield, though there were compensating changes in yield components. Seed yields of Maris Bead were significantly greater than Scirocco in experiment 3 but not experiment 2. There was no significant effect of irrigation on RUE or on wheat biomass and seed yield, but there was a trend for irrigation to increase faba bean biomass (P = 0.07) and seed yield (P = 0.06). With later sowing in experiments 2 and 3, time to harvest was shorter and wheat and bean biomass, seed yield and RUE were reduced. All land equivalent ratio (LER) values for both biomass (maximum 1.23) and seed yield (maximum 1.44) were greater than 1, with one exception in experiment 3, indicating that intercrops of wheat and faba beans make more effective use of land than equivalent sole crops. Partial LERs for faba beans were always lower than those of wheat. The tendency was for highest LERs to occur at 75% recommended density. |
| |
| Keywords: | Intercrops LER RUE |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
