{"content":[{"text":"Does stubble height influence subsequent crops?","bbox":{"left":0.121008,"top":0.223468,"width":0.47860100000000005,"height":0.019625000000000004}},{"text":"John Small, Central West Farming Systems","bbox":{"left":0.121008,"top":0.254047,"width":0.381201,"height":0.018054999999999988}},{"text":"GRDC project CWF00018 – Maintaining profitable \n stubble in Central West, NSW","bbox":{"left":0.121008,"top":0.283263,"width":0.46328500000000006,"height":0.0353}},{"text":"farming","bbox":{"left":0.595361,"top":0.283263,"width":0.068002,"height":0.018054999999999988}},{"text":"systems","bbox":{"left":0.67442,"top":0.283263,"width":0.07404100000000002,"height":0.018054999999999988}},{"text":"with","bbox":{"left":0.759327,"top":0.283263,"width":0.03734700000000002,"height":0.018054999999999988}},{"text":"retained","bbox":{"left":0.807932,"top":0.283263,"width":0.07183399999999995,"height":0.018054999999999988}},{"text":"Key Points","bbox":{"left":0.121008,"top":0.329724,"width":0.09562199999999998,"height":0.018054999999999988}},{"text":"•","bbox":{"left":0.15126,"top":0.360582,"width":0.00853000000000001,"height":0.017083999999999988}},{"text":"Stubble height did not affect fallow efficiency at Weethallee following the 2013 or \n 2014 harvests. \n Stubble height during the 2014 fallow did not impact on 2015 crop yields. \n Leaving higher stubbles may reduce harvest cost but may also cause issues during \n fallow sprays and sowing. Individual producers need to target a stubble height that \n best suits their equipment and techniquies.","bbox":{"left":0.181513,"top":0.359729,"width":0.6981409999999999,"height":0.106234}},{"text":"• \n •","bbox":{"left":0.151261,"top":0.396069,"width":0.00853000000000001,"height":0.035182999999999964}},{"text":"Background","bbox":{"left":0.121009,"top":0.476945,"width":0.107935,"height":0.018054999999999988}},{"text":"At CWFS field days and grower events any discussion about stubble management usually \n results in the question “Does stubble height matter?” The answer to this question depends \n on the perceived benefit of stubble height at both harvest and within the next crop. Most \n producers agree that during harvest there is extra operational costs and lower header \n efficiencies in harvesting consistently lower to allow for harvest weed seed management \n options. Producers of peas, vetch and other prostrate crops will claim benefits of leaving \n higher cereal stubbles to support for these crops. At the 2013/14 CWFS windrow burning \n trial at Wyalong, it was observed that traditional knee high stubbles required an earlier and \n potentially extra fallow spray due to quicker weed emergence than beer can height stubble \n treatments used for windrow burning treatments.","bbox":{"left":0.121009,"top":0.506238,"width":0.758749,"height":0.17350200000000005}},{"text":"During the 2013 and 2014 harvests, replicated stubble height trials using commercial \n equipment in commercial cereal crops were established by Mr Ian Luelf, Iona, Weethallee. \n CWFS used these sites to investigate any possible impact on subsequent management \n operations such as spraying or crop performance.","bbox":{"left":0.121009,"top":0.690798,"width":0.758635,"height":0.06989199999999995}},{"text":"Agronomic Issues","bbox":{"left":0.121009,"top":0.771814,"width":0.160562,"height":0.018055000000000043}},{"text":"Stubble height will have an impact on future paddock management.","bbox":{"left":0.121009,"top":0.800964,"width":0.551105,"height":0.018015000000000003}},{"text":"Generally higher stubble results in cheaper harvest costs. Higher stubble may slow the \n surface evaporation rate which, in certain fallow seasons depending on rainfall distribution, \n may potentially improve fallow efficiencies. Higher stubble may slow surface evaporation \n which may extend the sowing window in marginal establishment years.","bbox":{"left":0.121009,"top":0.830181,"width":0.758748,"height":0.06974900000000006}}],"images_bbox":[{"left":0.121008,"top":0.08551,"width":0.169008,"height":0.096627},{"left":0.418487,"top":0.091068,"width":0.157916,"height":0.091069},{"left":0.766387,"top":0.094916,"width":0.104672,"height":0.086508}],"images_bbox_not_text_overlap":[{"left":0.121008,"top":0.08551,"width":0.169008,"height":0.096627},{"left":0.418487,"top":0.091068,"width":0.157916,"height":0.091069},{"left":0.766387,"top":0.094916,"width":0.104672,"height":0.086508}]}