{"content":[{"text":"Higher stubble may hinder herbicide applications during the fallow and at crop \n establishment. Higher stubble may slow sowing once the root system decomposes. Higher \n stubble may result in extra weed germinations in fallow.","bbox":{"left":0.121008,"top":0.08353,"width":0.758748,"height":0.052503999999999995}},{"text":"2013 Trial","bbox":{"left":0.121008,"top":0.147159,"width":0.085424,"height":0.018055000000000015}},{"text":"At the 2013 harvest with the aim of documenting and quantifying any agronomic fallow \n impacts of different stubble heights, a replicated trial was established using a New Holland \n CR9070 with a honeybee front, whilst a wheat crop was being stripped. The trial consisted of \n 3 replicates and 4 target stubble height treatments, 15cm, 25cm, 30cm and 40cm. Plots \n were 12m (a header width wide) and 100m long.","bbox":{"left":0.121008,"top":0.176452,"width":0.7587189999999999,"height":0.08699299999999999}},{"text":"Results:","bbox":{"left":0.121008,"top":0.274569,"width":0.073133,"height":0.018054999999999988}},{"text":"Targeted stubble Standing Stubble load \n height (cm) (kg/ha) \n 40 1300-1655 \n 30 1015-1235 \n 25 605-1000 \n 15 605-735 \n Table1. Average standing stubble loadings.","bbox":{"left":0.121008,"top":0.304356,"width":0.395532,"height":0.11115599999999998}},{"text":"Month Rainfall (mm) \n December 0 \n January 16 \n February 17 \n March 60 \n Table 2. 2013 summer rainfall","bbox":{"left":0.121008,"top":0.45628,"width":0.356494,"height":0.09619100000000003}},{"text":"Soil cores were collected from each plot during December and March and gravimetric soil \n water determined. As expected no differences were observed between plots in December. \n No differences were observed in March. There were no significant rainfall events during the \n summer that would potentially store any soil water, as a result there was no agronomical \n change in soil water between December and March. Although a zero tolerance to summer \n weeds was practiced, no fallow weed control was required until early April as result of the \n March rain.","bbox":{"left":0.121008,"top":0.563672,"width":0.758806,"height":0.12162600000000001}},{"text":"Discussion:","bbox":{"left":0.121008,"top":0.696422,"width":0.10499799999999998,"height":0.018055000000000043}},{"text":"During the dry 2013/2014 (refer Table 2) summer stubble height had no impact on fallow \n efficiency or management. Observations at a CWFS windrow trial at Wyalong concluded that \n earlier and, potentially, an extra summer spray was required where stubble heights were \n higher, but this was not seen at Weethallee.","bbox":{"left":0.121008,"top":0.725573,"width":0.7587470000000001,"height":0.06989099999999993}},{"text":"2014 Trial","bbox":{"left":0.121008,"top":0.806446,"width":0.085424,"height":0.018055000000000043}},{"text":"At the 2014 harvest, another replicated trial was established using a New Holland CR9070 \n with a honeybee front whilst a wheat crop was being stripped with the aim of again \n documenting and quantifying any agronomic fallow impacts of different stubble heights. The \n subsequent Scope barley crop was also monitored. The trial consisted of 4 replicates and","bbox":{"left":0.121008,"top":0.835739,"width":0.758748,"height":0.06989100000000004}}],"images_bbox":[],"images_bbox_not_text_overlap":[]}