Dynamic crop sequencing in Western Australian cropping systems

摘要: During the last two decades in Western Australia, traditional mixed farming system has been increasingly displaced by intensive crop sequences dominated wheat. Intensive wheat are usually maintained using suitable breaks, including pasture, fallow, or alternative cereal, oilseed and legume crops, to control weeds disease, maintain supply of nitrogen crops. New cereal fungicide options may also assist systems suppressing soilborne diseases. To guide successful diversification systems, we evaluated effect a 2-year experimental matrix 10 different sequence options. Wheat was treated with fluquinconazole Jockey (wheat + J) pathogens, usual seed dressing flutriafol (wheat – J), used for bunts smuts only. The were wheat + J, J, barley, grain oats, oaten hay, canola, lupin, field pea, oat–vetch green manure, bare fallow) which all treatment combinations grown year 2 following same treatments 1. In 3, wheat + J across entire area as test crop. 2, yields crops reduced when on their own residues, (22% reduction), canola (46%), lupin (40%) pea (51%). Wheat + J significantly outyielded J 300 kg ha–1 1 (14% increase) 535 kg ha–1 (26% increase). more responsive break than both 2. Break sown 1, such continued have positive 3 yields. This study highlighted importance provided an example seed-dressing presence low levels disease consistently improved